CN106302217A - A kind of data link management method and device - Google Patents

Abstract

The embodiment of the invention discloses a data link management method and device, which relate to the technical field of communication and are used to improve the energy-saving effect of a data center. The method includes: the first node obtains the amount of data to be sent and/or the bandwidth utilization rate of the N data links connected to the second node; when the data to be sent of the M data links in the N data links When the amount is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, the first node sends a link shutdown request message to the second node; the first node receives the first A link closing response message sent by two nodes, the link closing response message including the information of the m data links determined to be closed by the second node; the first node closing the link closing response message according to the link closing response message m data links. The technical solution provided by the embodiment of the present invention can be used to reduce the power consumption of the data link.

Description

A data link management method and device

technical field

The invention relates to the field of communication technology, in particular to a data link management method and device.

Background technique

With the development of communication technology, the scale of the data center is getting bigger and bigger, and the power consumption of the data center is also increasing, and the power consumption reduction of the data center will save a lot of power. Therefore, how to reduce Research on power consumption of data centers is also becoming more and more popular. In the power consumption of the data center, a considerable part of the power consumption comes from the idle power consumption brought by the server when it is idle, and a large proportion of the idle power consumption is generated by the idle data link between the servers.

At present, in the power management scheme based on the PCIe (PCI-Express, bus interface) protocol, when the data link is busy (that is, frequently send data through the data link), the data link is in the L ₀ state. At this time, Data can be transmitted on the data link. When a PCIe device finds that a data link with another PCIe device does not transmit data within a preset period of time, the data link can be entered by changing the state of the power management state machine corresponding to the data link. In the low power consumption state, no data can be transmitted on the data link in the low power consumption state. When the PCIe device receives data sent to another PCIe device, it will gradually wake up the state of the power management state machine so that the data link enters the L ₀ state from the low power consumption state.

In the above method for reducing the power consumption of the data link, when the PCIe device receives data sent to another PCIe device every long time, for example, the PCIe device receives a data sent to another PCIe device every 1 second. The data sent by the device, the state of the data link that transmits the data will frequently switch between the L ₀ state and the low power consumption state, resulting in poor energy saving effect of the data center.

Contents of the invention

Embodiments of the present invention provide a data link management method and device for improving the energy saving effect of a data center.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In the first aspect, a data link management method is provided, including:

The first node obtains the amount of data to be sent and/or the bandwidth utilization rate of the N data links connected to the second node; wherein, N≥2, N is an integer;

When the amount of data to be sent of the M data links in the N data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, the first node sends the The second node sends a link closing request message; wherein, the link closing request message includes information about X data links among the M data links that the first node requests closing from the second node ;2≤M≤N, 1≤X≤M, both M and X are integers;

The first node receives the link closing response message sent by the second node, and the link closing response message includes the information of the m data links determined to be closed by the second node; wherein, when 1≤X< When M, 1≤m≤X; when X=M, 1≤m<X; m is an integer;

The first node closes the m data links according to the link close response message.

With reference to the first aspect, in a first possible implementation manner, after the first node receives the link shutdown response message sent by the second node, the method further includes:

The first node updates a network node connection table according to the information of the m data links, and the network node connection table includes information about the data links between the first node and the second node;

The first node updates a routing table according to the updated network node connectivity table, so that the first node transmits data with the second node according to the updated routing table.

With reference to the first aspect or the first possible implementation of the first aspect, in a second possible implementation, before the first node sends a link shutdown request message to the second node, the method Also includes:

The first node reserves at least one of the M data links and a data link whose network delay is less than a preset delay, and the X data links are one of the M data links A data link other than a reserved data link; or,

The first node sends a data link reservation message to the second node, which is used to request the second node to reserve data in at least one K data link with a network delay less than a preset delay Links, the X data links are the M data links; wherein, the K data links are the amount of data to be sent in the X data links determined by the second node is less than The first preset data volume and/or the data link whose bandwidth utilization rate is smaller than the preset utilization rate; 2≤K≤X; K is an integer.

With reference to the first aspect, the first possible implementation manner of the first aspect, or the second possible implementation manner, in a third possible implementation manner, the first node shuts down the link according to the link shutdown response message After the m data links, the method also includes:

When the first node receives a second preset amount of data sent to the second node within a preset time period, the first node starts at least one data link in the m data links link;

The first node sends a link opening notification message to the second node, notifying the second node to open the at least one data link; wherein, the link opening notification message includes the at least one data link Information.

With reference to the first aspect, the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a fourth possible implementation, the first node shuts down the link according to the link shutdown response message After the m data links, the method also includes:

The first node receives the link opening notification message sent by the second node; wherein the link opening notification message includes at least one data link among the m data links that the second node notifies to open road information;

The first node starts the at least one data link according to the link start notification message.

In the second aspect, a data link management method is provided, including:

The second node receives the link closing request message sent by the first node; wherein, the link closing request message includes X data links among the M data links that the first node requests to close to the second node The information of the road; the M data links are the N data links determined by the first node and connected to the second node. The amount of data to be sent is less than the first preset data amount and/or bandwidth utilization The data link whose utilization rate is less than the preset utilization rate; 1≤X≤M, 2≤M≤N, where N, M, and X are all integers;

The second node determines to close m data links among the X data links according to the link closing request message; wherein, when 1≤X<M, 1≤m≤X; when X=M, 1≤m<X; m is an integer;

The second node generates a link closing response message according to the information of the m data links and sends the link closing response message to the first node, so that the first node closes the link according to the Closing the m data links in response to the message;

The second node closes the m data links.

With reference to the second aspect, in a first possible implementation manner, after the second node determines to close m data links among the X data links according to the link close request message, the method further includes :

The second node updates a network node connection table according to the information of the m data links, and the network node connection table includes information about the data links between the second node and the first node;

The second node updates a routing table according to the updated network node connectivity table, so that the second node transmits data with the first node according to the updated routing table.

With reference to the second aspect or the first possible implementation manner of the second aspect, in the second possible implementation manner, the second node determines to close m among the X data links according to the link shutdown request message. data links, including:

The second node counts the amount of data to be sent and/or the bandwidth utilization rate of the X data links, and if the amount of data to be sent of the m data links in the X data links is less than the first preset Assuming that the amount of data and/or the utilization rate of the bandwidth is less than the preset utilization rate, it is determined to close the m data links;

or,

The second node receives the data link reservation message sent by the first node; the second node counts the amount of data to be sent and/or bandwidth utilization of the X data links, and if the X data links The amount of data to be sent in the K data links in the data link is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, and at least one network in the K data links is reserved For the data links whose delay is less than the preset delay, it is determined to close the m data links except the reserved data links among the K data links; 2≤K≤X, K is an integer.

With reference to the second aspect, the first possible implementation manner or the second possible implementation manner of the second aspect, in a third possible implementation manner, after the second node closes the m data links , the method also includes:

The second node receives the link opening notification message sent by the first node; wherein, the link opening notification message includes at least one piece of data in the m data links that the first node notifies to open link information;

The second node starts the at least one data link according to the link start notification message.

With reference to the second aspect, the first possible implementation manner or the second possible implementation manner of the second aspect, in a fourth possible implementation manner, after the second node closes the m data links , the method also includes:

When the second node receives a second preset amount of data sent to the first node within a preset time period, the second node starts at least one data link in the m data links link;

The second node sends a link opening notification message to the first node, notifying the first node to open the at least one data link; wherein, the link opening notification message includes the at least one data link Information.

In a third aspect, a first node is provided, including:

An acquisition unit, configured to acquire the amount of data to be sent and/or bandwidth utilization of the N data links connected to the second node; wherein, N≥2, N is an integer;

A sending unit, configured to, when the amount of data to be sent in the M data links among the N data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, send the The second node sends a link closing request message; wherein, the link closing request message includes information about X data links among the M data links that the first node requests closing from the second node ;2≤M≤N, 1≤X≤M, both M and X are integers;

A receiving unit, configured to receive a link shutdown response message sent by the second node, where the link shutdown response message includes information on the m data links determined to be closed by the second node; wherein, when 1≤X< When M, 1≤m≤X; when X=M, 1≤m<X; m is an integer;

An execution unit, configured to close the m data links according to the link close response message.

With reference to the third aspect, in a first possible implementation manner, the first node further includes:

A first updating unit, configured to update a network node connectivity table according to information of the m data links, where the network node connectivity table includes information of data links connecting the first node to the second node;

The second updating unit is configured to update a routing table according to the updated connection table of network nodes, so that the first node transmits data with the second node according to the updated routing table.

In combination with the third aspect or the first possible implementation of the third aspect, in the second possible implementation,

The first node further includes a reservation unit, the reservation unit is used to reserve at least one of the M data links and a data link whose network delay is less than a preset delay, and the X The data link is a data link other than the reserved data link among the M data links; or,

The sending unit is further configured to send a data link reservation message to the second node, which is used to request the second node to reserve at least one K data link with a network delay less than a preset delay The data links at the time, the X data links are the M data links; wherein, the K data links are the ones to be sent in the X data links determined by the second node A data link whose data volume is less than the first preset data volume and/or whose bandwidth utilization rate is less than the preset utilization rate; 2≤K≤X; K is an integer.

In combination with the third aspect, the first possible implementation of the third aspect or the second possible implementation, in the third possible implementation,

The execution unit is further configured to enable the m data links when the first node receives a second preset amount of data sent to the second node within a preset time period. at least one data link;

The sending unit is further configured to send a link start notification message to the second node to notify the second node to start the at least one data link; wherein the link start notification message includes the at least one Data link information.

In combination with the third aspect, the first possible implementation of the third aspect or the second possible implementation, in the fourth possible implementation,

The receiving unit is further configured to receive a link start notification message sent by the second node; wherein the link start notification message includes at least one of the m data links that the second node notifies to start information on a data link;

The execution unit is further configured to enable the at least one data link according to the link activation notification message.

In a fourth aspect, a second node is provided, including:

A receiving unit, configured to receive a link closing request message sent by the first node; wherein, the link closing request message includes X of the M data links that the first node requests to close from the second node Information about the data link; the M data links are the N data links determined by the first node and communicated with the second node. The amount of data to be sent is less than the first preset data amount and/or Data links whose bandwidth utilization rate is less than the preset utilization rate; 1≤X≤M, 2≤M≤N, where N, M, and X are all integers;

A determining unit, configured to determine to close m data links among the X data links according to the link closing request message; wherein, when 1≤X<M, 1≤m≤X; when X=M, 1≤m<X; m is an integer;

a generating unit, configured to generate a link shutdown response message according to the information of the m data links;

a sending unit, configured to send the link closing response message to the first node, so that the first node closes the m data links according to the link closing response message;

An execution unit, configured to close the m data links.

With reference to the fourth aspect, in a first possible implementation manner, the second node further includes:

A first updating unit, configured to update a network node connectivity table according to information of the m data links, where the network node connectivity table includes information of data links that the second node is connected to the first node;

The second updating unit is configured to update a routing table according to the updated connection table of network nodes, so that the second node transmits data with the first node according to the updated routing table.

In combination with the fourth aspect or the first possible implementation of the fourth aspect, in the second possible implementation,

The determining unit is specifically configured to count the amount of data to be sent and/or bandwidth utilization of the X data links, if the amount of data to be sent in the m data links of the X data links is less than Both the first preset data volume and/or the bandwidth utilization rate are smaller than the preset utilization rate, and it is determined to close the m data links;

or,

The receiving unit is further configured to receive the data link reservation message sent by the first node; the determining unit is specifically configured to count the amount of data to be sent and/or bandwidth utilization of the X data links , if the amount of data to be sent in the K data links of the X data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, at least one of the K data links is reserved The network delay in the data link is less than the data link with the preset delay, and it is determined to close the m data links in the K data links except the reserved data link; 2≤K≤X , K is an integer.

In combination with the fourth aspect, the first possible implementation manner or the second possible implementation manner of the fourth aspect, in the third possible implementation manner,

The receiving unit is further configured to receive a link start notification message sent by the first node; wherein, the link start notification message includes the m data links that the first node notifies to start information on at least one data link;

The execution unit is further configured to enable the at least one data link according to the link activation notification message.

In combination with the fourth aspect, the first possible implementation manner or the second possible implementation manner of the fourth aspect, in the fourth possible implementation manner,

The executing unit is further configured to, when the second node receives a second preset amount of data sent to the first node within a preset time period, enable the m data links at least one data link;

The sending unit is further configured for the second node to send a link start notification message to the first node, to notify the first node to start the at least one data link; wherein, the link start notification message Information about the at least one data link is included.

According to a fifth aspect, there is provided a data link management system, which is characterized by comprising: any first node described in the third aspect, and/or any second node described in the fourth aspect.

In the method and device provided by the embodiments of the present invention, the first node can count the amount of data to be sent and/or the bandwidth utilization rate of the data link connected to the second node, and jointly determine with the second node that the amount of data to be sent is less than the first node Part of the data link whose preset data volume and/or bandwidth utilization rate is less than the preset utilization rate is closed. During data transmission, the certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a flowchart of a data link management method provided by an embodiment of the present invention;

FIG. 2 is a flowchart of another data link management method provided by an embodiment of the present invention;

FIG. 3 is a flowchart of another data link management method provided by an embodiment of the present invention;

FIG. 4 is a flowchart of another data link management method provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first node provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another first node provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another first node provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a second node provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another second node provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another second node provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The method provided by the embodiment of the present invention can be used to reduce the power consumption of the data center. Data centers generally include racks, cabinets, servers, etc., and data can be transmitted between servers through data links. The first node and the second node in the embodiment of the present invention both refer to network nodes, which belong to the server. When the first node and the second node transmit data in the same network, they do not need to pass through other network nodes, and can directly pass through the first node A plurality of data links communicating with the second node transmit data.

In addition, the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which may mean: A exists alone, A and B exist at the same time, There are three cases of B alone. "Plurality" herein refers to two or more.

Embodiment one

An embodiment of the present invention provides a data link management method, as shown in FIG. 1 , including:

101. The first node obtains the amount of data to be sent and/or the bandwidth utilization rate of the N data links connected to the second node; where N≥2, and N is an integer.

Wherein, a data link corresponds to a data volume to be sent and a bandwidth utilization rate.

When step 101 is actually implemented, the first node can count the amount of data to be sent and/or bandwidth utilization of the data link in real time, or can count the amount of data to be sent and/or bandwidth utilization of the data link within a certain period of time Rate.

102. When the amount of data to be sent in the M data links among the N data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, the first node sends a message to the second node A link closing request message; wherein, the link closing request message includes information on X data links among the M data links that the first node requests to close to the second node; 2≤M≤N, 1≤X≤M , M and X are both integers.

Specifically, when the amount of data to be sent of the data link is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, it means that the data transmitted through the data link is less. Wherein, the first preset data amount and the preset utilization rate may be determined according to actual conditions, which is not limited in this embodiment of the present invention.

Wherein, the information of the data link may specifically be a serial number of the data link, or may be other information that can be used to distinguish different data links.

103. The first node receives the link closing response message sent by the second node, and the link closing response message includes information on the m data links that the second node determines to close; where, when 1≤X<M, 1≤m ≤X; when X=M, 1≤m<X; m is an integer.

104. The first node closes the m data links according to the link close response message.

Wherein, the closing of a certain data link mentioned in the embodiment of the present invention refers to making the data link in a state of being unable to transmit data.

When step 104 is actually implemented, the first node includes a power management state machine, and a data link can correspond to a power management state machine. When the first node determines to close a certain data link, it can control the data link corresponding to The state of the power management state machine makes the state of the data link switch from the L ₀ state to a low power consumption state, thereby closing the data link.

In the method provided by the embodiment of the present invention, the first node can count the amount of data to be sent and/or the bandwidth utilization rate of the data link connected to the second node, and jointly determine with the second node that the amount of data to be sent is less than the first preset Assume that some data links whose data volume and/or bandwidth utilization rate are less than the preset utilization rate are closed, when the first node only receives the data transmitted with the second node through a closed data link every long time , the certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Optionally, before step 102, the above X data links may be determined in any of the following two ways:

Method 1: The first node reserves at least one data link among the M data links, and the network delay is less than the preset delay, and the X data links are the M data links except the reserved data Data link other than link.

Mode 2: the first node sends a data link reservation message to the second node, which is used to request the second node to reserve at least one data link among the K data links and whose network delay is less than the preset delay, The X data links are M data links; wherein, the K data links are the X data links determined by the second node, the amount of data to be sent is less than the first preset data amount and/or the bandwidth utilization rate is less than Data link with preset utilization; 2≤K≤X; K is an integer.

Wherein, in the specific implementation of mode one, the first node needs to calculate the network delay of M data links (one data link corresponds to one network delay), and determine the data link whose network delay is less than the preset delay , at least one of the data links is reserved. In addition, after the first node calculates the network delay of the M data links, it can also determine the reserved data link according to other preset conditions. For example, other preset conditions can be: each reserved data link The network delay of the link is smaller than the network delay of other data links in the M data links except the reserved data link.

Specifically, the number of reserved data links determined by the first node can be determined according to the actual situation, for example, if the sum of the data volumes to be sent in the M data links is large, multiple data links can be reserved , if the total amount of data to be sent in the M data links is less, one data link can be reserved.

In the above method, the network delay of the reserved data link is relatively short, which is conducive to improving the efficiency of data transmission.

Optionally, after step 103, the above method may also include the following steps 11)-12):

11) The first node updates the network node connection table according to the information of the m data links, and the network node connection table includes the information of the data links connected between the first node and the second node.

12) The first node updates the routing table according to the updated network node connectivity table, so that the first node transmits data with the second node according to the updated routing table.

It should be noted that this optional method may be performed before or after step 104, or may be performed simultaneously with step 104; preferably, this optional method may be performed before step 104 or simultaneously with step 104.

Specifically, after the second node determines the closed m data links, it can directly update its own network node connection table and update its own routing table according to the updated network node connection table. In this case, the first node updates the routing table table, it can ensure that the first node and the second node transmit data through the unclosed data link according to their respective updated routing tables.

Optionally, after step 104, the above method may also include the following steps 21)-22):

21) When the first node receives a second preset amount of data sent to the second node within a preset time period, the first node starts at least one data link among the m data links.

22) The first node sends a link start notification message to the second node to notify the second node to start at least one data link; wherein, the link start notification message includes information about at least one data link.

Specifically, after step 22), the first node may send data to the second node through at least one enabled data link, or at least one enabled data link and an unclosed data link.

Specifically, when the first node receives the second preset amount of data sent to the second node within the preset time period, the unclosed data link may not be able to send data in time. At this time, you can open A data link that has been shut down.

Optionally, after step 104, the above method may also include the following steps 31)-32):

31) The first node receives the link opening notification message sent by the second node; wherein, the link opening notification message includes information about at least one data link among the m data links that the second node notifies to open.

32) The first node starts at least one data link according to the link start notification message.

In this case, when the second node receives a second preset amount of data sent to the first node within a preset time period, the second node may also send a link start notification message to the first node, so that the second node A node turns on at least one data link among the m data links that are turned off.

In addition, when the first node determines to enable a certain data link, it may control the state of the power management state machine corresponding to the data link so that the data link switches from the low power consumption state to the L ₀ state.

It should be noted that once the state of one or more data links among the N data links changes from the open state to the closed state or from the closed state to the open state, both the first node and the second section need to be updated in time Its own network node connection table and routing table ensure the correct transmission of data.

It should be noted that, in the method for reducing the power consumption of the data link described in the background art, when a PCIe device receives data sent to another PCIe device, it will gradually wake up the state of the power management state machine so that the data sent The data link enters the L ₀ state. The low power consumption state can be further divided into L _0s , L ₁ , L ₂ and L ₃ states, and the low power consumption states can be arranged as L _0s > L ₁ > L ₂ according to the order of power consumption of the data link from large to small > L ₃ . It can be seen that when the data link enters the L3 state, the power consumption _of the data link is minimum.

Specifically, when the data link is in the low power consumption state L3, if the PCIe device receives data sent to another PCIe device, it will wake up the state _of the power management state machine so that the state _of the data link changes from L3 _The state goes to the L2 state, then to the L1 state, then to the _L0s state, and finally enters the _{L0 state} . In this way, when a PCIe device needs to send data to another PCIe device through the data link, it needs to wait until the data link is awakened, and the data link wakes up from the low power consumption state to the L ₀ state requires a long delay . However, in the data link management method provided by the embodiment of the present invention, after the data link that satisfies the conditions is closed, if the amount of data received by the first node and sent to the second node is small, the first node and the second node Data transmission can be performed between the two nodes through an unclosed data link, so the above-mentioned problem does not exist.

Embodiment two

An embodiment of the present invention provides a data link management method, as shown in FIG. 2 , including:

201. The second node receives a link closing request message sent by the first node; wherein, the link closing request message includes information about X data links among the M data links that the first node requests closing from the second node; The M data links are the data links whose amount of data to be sent is less than the first preset data amount and/or whose bandwidth utilization rate is less than the preset utilization rate among the N data links determined by the first node and connected to the second node ; 1≤X≤M, 2≤M≤N, where N, M, and X are all integers.

It should be noted that, relevant explanations in the embodiments of the present invention may refer to the foregoing embodiments.

202. The second node determines to close m data links among the X data links according to the link close request message; where, when 1≤X<M, 1≤m≤X; when X=M, 1≤ m<X; m is an integer.

Optionally, step 202 may be implemented in any of the following two ways during specific implementation:

Mode 1: The second node counts the amount of data to be sent and/or bandwidth utilization of the X data links, if the amount of data to be sent in the m data links of the X data links is less than the first preset data amount And/or the bandwidth utilization rate is less than the preset utilization rate, and it is determined to close the m data links.

Mode 2: The second node receives the data link reservation message sent by the first node; the second node counts the amount of data to be sent and/or the bandwidth utilization rate in the X data links, if K in the X data links The amount of data to be sent of each data link is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, and the network delay in at least one K data link is less than the preset delay time The data link is to determine to close m data links except the reserved data link among the K data links; 2≤K≤X, K is an integer.

Wherein, when mode 2 is actually implemented, the second node needs to calculate the network delay of K data links (one data link corresponds to one network delay), and determine the data link whose network delay is less than the preset delay , at least one of the data links is reserved. In addition, after the second node calculates the network delay in the K data links, it can also determine the reserved data links according to other preset conditions. For example, other preset conditions can be: each of the reserved The network delay of the data link is smaller than the network delay of other data links in the K data links except the reserved data link.

Specifically, the number of reserved data links determined by the second node can be determined according to the actual situation. For example, if the sum of the data volumes to be sent in the K data links is large, multiple data links can be reserved , if the total amount of data to be sent in the K data links is less, one data link can be reserved. In the above method, the network delay of the reserved data link is relatively short, which is conducive to improving the efficiency of data transmission.

203. The second node generates a link shutdown response message according to the information of the m data links and sends the link shutdown response message to the first node, so that the first node shuts down the m data links according to the link shutdown response message.

204. The second node closes the m data links.

When step 204 is actually implemented, the second node includes a power management state machine, and a data link can correspond to a power management state machine. When the second node determines to close a certain data link, it can control the data link corresponding to The state of the power management state machine makes the state of the data link switch from the L ₀ state to a low power consumption state, thereby closing the data link.

The execution order of step 203 and step 204 in the embodiment of the present invention is not in particular order.

According to the method provided by the embodiment of the present invention, the second node can jointly determine with the first node that the amount of data to be sent is less than the first predetermined amount by receiving the information of the data link contained in the link closing request message sent by the first node. Assume that some data links whose data volume and/or bandwidth utilization rate are less than the preset utilization rate are closed, when the first node only receives the data transmitted with the second node through a closed data link every long time , the certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Optionally, after step 202, the above method may also include the following steps 41)-42):

41) The second node updates the network node connection table according to the information of the m data links, and the network node connection table includes the information of the data links connected between the second node and the first node.

42) The second node updates the routing table according to the updated network node connectivity table, so that the second node transmits data with the first node according to the updated routing table.

It should be noted that this optional method may be performed before and after step 204, or may be performed simultaneously with step 204; preferably, this optional method may be performed before step 204 or simultaneously with step 204.

Specifically, after the second node determines the closed m data links, it can directly update its own network node connection table and update its own routing table according to the updated network node connection table. In this case, the first node updates the routing table table, it can ensure that the first node and the second node transmit data through the unclosed data link according to their respective updated routing tables.

Optionally, after step 204, the above method may also include the following steps 51)-52):

51) The second node receives the link start notification message sent by the first node; wherein, the link start notification message includes information about at least one of the m data links that the first node notifies to start.

52) The second node starts at least one data link according to the link start notification message.

In this case, when the first node receives a second preset amount of data sent to the second node within a preset time period, it sends a link opening notification message to the second node, so that the second node turns on the closed m at least one of the data links.

Optionally, after step 204, the above method may also include the following steps 61)-62):

61) When the second node receives a second preset amount of data sent to the first node within a preset time period, the second node starts at least one data link among the m data links.

62) The second node sends a link start notification message to the first node to notify the first node to start at least one data link; wherein, the link start notification message includes information about at least one data link.

Specifically, after step 62), the second node may send data to the first node through at least one enabled data link, or at least one enabled data link and an unclosed data link.

Specifically, when the second node receives the second preset amount of data sent to the first node within the preset time period, the unclosed data link may not be able to send data in time. At this time, you can open A data link that has been shut down.

In addition, when the second node determines to enable a certain data link, it may control the state of the power management state machine corresponding to the data link so that the data link switches from the low power consumption state to the L ₀ state.

Embodiment three

This embodiment of the present invention is an exemplary description of the data link management method provided by Embodiment 1 and Embodiment 2. For relevant explanations in this embodiment of the present invention, please refer to the foregoing embodiments, as shown in FIG. 3 , the method includes:

301. The first node counts the amount of data to be sent and/or bandwidth utilization of the N data links connected to the second node.

Specifically, the first node may determine its own data volume to be sent by querying its cached data volume to be sent, and a data link with less data volume to be sent is more idle. The first node can calculate the bandwidth utilization rate of the data link by the amount of data sent to the second node on a certain data link and the amount of received data fed back by the second node. Smaller data links are more idle.

302. When the amount of data to be sent in the M data links among the N data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, the first node sends a message to the second node A data link reservation message and a link closing request message; wherein, the data link reservation message is used to make the second node reserve a data link with the shortest network delay among the M data links; the link closing request The message includes information about the M data links that the first node requests the second node to close.

Wherein, the information of the data link may specifically be a serial number of the data link.

303. The second node counts the amount of data to be sent and/or bandwidth utilization of the M data links according to the received link shutdown request message.

304. If the amount of data to be sent in the K data links among the M data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, the second node calculates the K data links network delay.

Exemplarily, the second node can send a data packet on the data link to calculate the network delay, the second node sends a feedback message immediately after receiving the data packet, and the first node Calculate the network delay of the data link based on the point and the time point when the feedback message is received.

305. The second node reserves one of the K data links with the shortest network delay according to the data link reservation message, and determines that the rest of the K data links are the m data links that are determined to be closed link; where m=K-1.

It should be noted that the reserved data link has a relatively short network delay, which is beneficial to improving data transmission efficiency.

306. The second node generates a link shutdown response message and sends the link shutdown response message to the first node, where the link shutdown response message includes information about the m data links that the second node determines to shutdown.

307. The second node updates its own network node connection table according to the information of the m data links determined to be closed, and updates its own routing table according to the updated network node connection table.

308. The second node closes the m data links determined to be closed according to the information about the m data links.

It should be noted that the execution order of steps 307 and 308 is not limited in this embodiment of the present invention. Preferably, steps 307 and 308 are executed at the same time, or step 307 is executed before step 308 .

309. The first node updates its own network node connection table according to the information of the m data links included in the received link shutdown response message, and updates its own routing table according to the updated network node connection table.

310. The first node closes the m data links according to the information of the m data links included in the received link closing response message.

It should be noted that the execution order of steps 309 and 310 is not limited in this embodiment of the present invention. Preferably, steps 309 and 310 are executed at the same time, or step 309 is executed before step 310 . In addition, when the second node executes steps 307 and 308, the first node may execute steps 309 and 310, and the two do not conflict.

Specifically, the first node and the second node include a power management state machine, and a data link may correspond to a power management state machine. When the first node or the second node determines to close a certain data link, it can control the The state of the power management state machine corresponding to the data link makes the state of the data link switch from the L ₀ state to the low power consumption state, thereby closing the data link.

311. The first node transmits data with the second node according to the updated routing table.

Specifically, after the first node and the second node update the network node connection table and update the routing table according to the updated network node connection table, the first node or the second node can use the updated routing table in the unclosed data data transmission over the link.

Wherein, the unclosed data links are data links other than the m data links among the M data links.

When the first node receives the second preset amount of data sent to the second node within the preset time period, the unclosed data link may not be able to send the data in time. In this case, as shown in Figure 4 As indicated, the method may also include:

401. The first node starts at least one data link among the m data links.

402. The first node sends a link start notification message to the second node. The link start notification message includes information about at least one data link among the m data links that the first node notifies to start.

403. The second node starts at least one data link among the m data links according to the received link start notification message.

Specifically, when the first node or the second node determines to enable a certain data link, the state of the power management state machine corresponding to the data link may be controlled so that the data link switches from the low power consumption state to the L ₀ state.

Of course, when the second node receives the second preset data amount of data sent to the first node within the preset time period, the second node may also execute steps 401 and 402, and the first node executes step 403.

It should be noted that once the state of one or more data links among the N data links changes from the open state to the closed state or from the closed state to the open state, both the first node and the second section need to be updated in time Its own network node connection table and routing table ensure the correct transmission of data.

In the method provided by the embodiment of the present invention, the first node can count the amount of data to be sent and/or the bandwidth utilization rate of the data link connected to the second node, and jointly determine with the second node that the amount of data to be sent is less than the first preset Assume that some data links whose data volume and/or bandwidth utilization rate are less than the preset utilization rate are closed, when the first node only receives the data transmitted with the second node through a closed data link every long time , the certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Embodiment Four

As shown in FIG. 5, an embodiment of the present invention provides a first node 50 for implementing the data link management method shown in FIG. 1. The first node 50 includes:

The obtaining unit 501 is configured to obtain the amount of data to be sent and/or the bandwidth utilization rate of the N data links connected to the second node; wherein, N≥2, N is an integer;

The sending unit 502 is configured to, when the amount of data to be sent of the M data links in the N data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, send the second node Send a link closing request message; wherein, the link closing request message includes the first node 50 requesting the second node to close the information of X data links in the M data links; 2≤M≤N, 1≤X ≤M, M and X are both integers;

The receiving unit 503 is configured to receive a link shutdown response message sent by the second node, where the link shutdown response message includes information on the m data links determined to be closed by the second node; where, when 1≤X<M, 1≤ m≤X; when X=M, 1≤m<X; m is an integer;

The execution unit 504 is configured to close the m data links according to the link close response message.

Optionally, as shown in FIG. 6, the first node 50 may further include:

The first update unit 505 is configured to update the network node connection table according to the information of the m data links, the network node connection table includes the information of the data link connected between the first node 50 and the second node;

The second updating unit 506 is configured to update the routing table according to the updated network node connectivity table, so that the first node 50 transmits data with the second node according to the updated routing table.

Optionally, as shown in FIG. 6 , the first node 50 further includes a reservation unit 507, which is used to reserve at least one data link among the M data links with a network delay less than a preset delay The X data links are data links other than the reserved data links among the M data links; or,

The sending unit 502 is further configured to send a data link reservation message to the second node, which is used to request the second node to reserve at least one data link among the K data links and whose network delay is less than a preset delay , the X data links are M data links; wherein, the K data links are the amount of data to be sent in the X data links determined by the second node is less than the first preset data amount and/or bandwidth utilization A data link that is less than a preset utilization rate; 2≤K≤X; K is an integer.

Optionally, the execution unit 504 is further configured to enable at least one of the m data links when the first node 50 receives a second preset amount of data sent to the second node within a preset time period Data link; the sending unit 502 is further configured to send a link start notification message to the second node, to notify the second node to start at least one data link; wherein, the link start notification message includes information about at least one data link.

Optionally, the receiving unit 503 is further configured to receive a link opening notification message sent by the second node; wherein, the link opening notification message includes at least one data link among the m data links that the second node notifies to open Information; the executing unit 504 is further configured to enable at least one data link according to the link opening notification message.

The first node provided by the embodiment of the present invention can count the amount of data to be sent and/or the bandwidth utilization rate of the data link connected to the second node, and jointly determine with the second node that the amount of data to be sent is less than the first preset Part of the data link whose data volume and/or bandwidth utilization rate is less than the preset utilization rate is closed, when the first node receives the data transmitted between the closed data link and the second node at a relatively long interval, The certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Embodiment five

In terms of hardware implementation, each module in Embodiment 4 can be embedded in or independent of the processor of the first node in the form of hardware, or can be stored in the memory of the first node in the form of software, so that the processor can call and execute For the corresponding operations of the above modules, the processor may be a central processing unit (CPU), a microprocessor, a single-chip microcomputer, and the like.

As shown in FIG. 7 , an embodiment of the present invention provides a first node 70 for implementing the data link management method shown in FIG. 1 , the first node 70 includes: a memory 701, a processor 702, a transmitter 703, receiver 704 and bus system 705;

Among them, the memory 701, the processor 702, the transmitter 703 and the receiver 704 are coupled together through the bus system 705, wherein the memory 701 may include a random access memory, and may also include a non-volatile memory, for example at least A disk storage. The bus system 705 may be an ISA bus, a PCI bus, or an EISA bus. The bus system 705 can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 7 , but it does not mean that there is only one bus or one type of bus.

The memory 701 is used to store a set of codes, and the codes are used to control the processor 702 to perform the following actions: acquire the amount of data to be sent and/or bandwidth utilization of the N data links connected to the second node; wherein, N≥2 , N is an integer;

The sender 703 is configured to, when the amount of data to be sent of the M data links in the N data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, send the message to the second node Send a link closing request message; wherein, the link closing request message includes the first node 70 requesting the second node to close the information of X data links in the M data links; 2≤M≤N, 1≤X ≤M, M and X are both integers;

The receiver 704 is configured to receive a link closing response message sent by the second node, where the link closing response message includes the information of the m data links determined to be closed by the second node; where, when 1≤X<M, 1≤ m≤X; when X=M, 1≤m<X; m is an integer;

The processor 702 is further configured to close the m data links according to the link close response message.

Optionally, the processor 702 is also configured to update the network node connection table according to the information of the m data links, the network node connection table includes the information of the data link connected between the first node 70 and the second node; according to the updated The network node connectivity table updates the routing table, so that the first node 70 transmits data with the second node according to the updated routing table.

Optionally, the processor 702 is further configured to reserve at least one of the M data links and a data link whose network delay is less than the preset delay, and the X data links are all the M data links except a data link other than the reserved data link; or,

The sender 703 is further configured to send a data link reservation message to the second node, which is used to request the second node to reserve at least one data link among the K data links and whose network delay is less than a preset delay , the X data links are M data links; wherein, the K data links are the amount of data to be sent in the X data links determined by the second node is less than the first preset data amount and/or bandwidth utilization A data link that is less than a preset utilization rate; 2≤K≤X; K is an integer.

Optionally, the processor 702 is further configured to enable at least one of the m data links when the first node 70 receives a second preset amount of data sent to the second node within a preset time period. link; the sender 703 is further configured to send a link start notification message to the second node, and notify the second node to start at least one data link; wherein, the link start notification message includes information about at least one data link.

Optionally, the receiver 704 is also configured to receive a link opening notification message sent by the second node; wherein, the link opening notification message includes information about at least one of the m data links that the second node notifies to open ; The processor 702 is also configured to enable at least one data link according to the link activation notification message.

The first node provided by the embodiment of the present invention can count the amount of data to be sent and/or the bandwidth utilization rate of the data link connected to the second node, and jointly determine with the second node that the amount of data to be sent is less than the first preset Part of the data link whose data volume and/or bandwidth utilization rate is less than the preset utilization rate is closed, when the first node receives the data transmitted between the closed data link and the second node at a relatively long interval, The certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Embodiment six

As shown in FIG. 8, an embodiment of the present invention provides a second node 80, which is used to implement the data link management method shown in FIG. 2, and the second node 80 includes:

The receiving unit 801 is configured to receive a link closing request message sent by the first node; wherein, the link closing request message includes X data links among the M data links that the first node requests the second node 80 to close Information; the M data links are those in which the amount of data to be sent in the N data links connected to the second node 80 determined by the first node is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate Data link; 1≤X≤M, 2≤M≤N, N, M, and X are all integers;

The determining unit 802 is configured to determine to close m data links among the X data links according to the link closing request message; where, when 1≤X<M, 1≤m≤X; when X=M, 1 ≤m<X; m is an integer;

A generating unit 803, configured to generate a link shutdown response message according to the information of the m data links;

A sending unit 804, configured to send a link closing response message to the first node, so that the first node closes m data links according to the link closing response message;

The execution unit 805 is configured to close the m data links.

Optionally, as shown in FIG. 9, the second node 80 further includes:

The first update unit 806 is configured to update the network node connection table according to the information of the m data links, and the network node connection table includes the information of the data link connected between the second node 80 and the first node;

The second updating unit 807 is configured to update the routing table according to the updated network node connectivity table, so that the second node 80 transmits data with the first node according to the updated routing table.

Optionally, the determining unit 802 is specifically configured to count the amount of data to be sent and/or bandwidth utilization of the X data links, if the amount of data to be sent of the m data links in the X data links is less than the first The preset data volume and/or bandwidth utilization are both smaller than the preset utilization, and it is determined to close the m data links; or,

The receiving unit 801 is also configured to receive the data link reservation message sent by the first node; the determining unit 802 is specifically configured to count the amount of data to be sent and/or bandwidth utilization of the X data links, if the X data links The amount of data to be sent in the K data links in the road is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, and the network delay in at least one K data link is reserved less than the preset Assuming a delayed data link, it is determined to close the m data links except the reserved data link among the K data links; 2≤K≤X, K is an integer.

Optionally, the receiving unit 801 is also configured to receive a link opening notification message sent by the first node; wherein, the link opening notification message includes the information of at least one data link among the m data links that the first node notifies to open Information; the executing unit 805 is further configured to enable at least one data link according to the link opening notification message.

Optionally, the execution unit 805 is further configured to enable at least one data link in the m data links when the second node 80 receives a second preset amount of data sent to the first node within a preset time period. link; the sending unit 804 is also used for the second node 80 to send a link start notification message to the first node, to notify the first node to start at least one data link; wherein, the link start notification message includes information about at least one data link .

The second node provided in the embodiment of the present invention can jointly determine with the first node that the amount of data to be sent is less than the first preset Part of the data link whose data volume and/or bandwidth utilization rate is less than the preset utilization rate is closed, when the first node receives the data transmitted between the closed data link and the second node at a relatively long interval, The certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

Embodiment seven

In terms of hardware implementation, each module in Embodiment 6 can be embedded in or independent of the processor of the second node in the form of hardware, or can be stored in the memory of the second node in the form of software, so that the processor can call and execute For the corresponding operations of the above modules, the processor may be a central processing unit (CPU), a microprocessor, a single-chip microcomputer, and the like.

As shown in FIG. 10 , an embodiment of the present invention provides a second node 100 for implementing the data link management method shown in FIG. 2 . The second node 100 includes: a receiver 1001, a memory 1002, a processor 1003, Transmitter 1004 and bus system 1005.

Wherein, the receiver 1001, the memory 1002, the processor 1003 and the transmitter 1004 are coupled together through a bus system 1005, wherein the memory 1002 may include a random access memory, and may also include a non-volatile memory, for example at least A disk storage. The bus system 1005 may be an ISA bus, a PCI bus, or an EISA bus. The bus system 1005 can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 10 , but it does not mean that there is only one bus or one type of bus.

The receiver 1001 is configured to receive a link closing request message sent by the first node; wherein, the link closing request message includes X data links among the M data links that the first node requests the second node 100 to close Information; the M data links are the N data links connected to the second node 100 determined by the first node, the amount of data to be sent is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate Data link; 1≤X≤M, 2≤M≤N, N, M, and X are all integers;

The memory 1002 is used to store a set of codes, and the codes are used to control the processor 1003 to perform the following actions: determine to close the m data links among the X data links according to the link closing request message; wherein, when 1≤X<M When X=M, 1≤m≤X; when X=M, 1≤m<X; m is an integer; generate a link closing response message according to the information of m data links;

The sender 1004 is configured to send a link closing response message to the first node, so that the first node closes m data links according to the link closing response message;

The processor 1003 is further configured to close the m data links.

Optionally, the processor 1003 is further configured to update the network node connection table according to the information of the m data links, the network node connection table includes the information of the data link connected between the second node 100 and the first node; according to the updated The network node connectivity table updates the routing table, so that the second node 100 transmits data with the first node according to the updated routing table.

Optionally, the processor 1003 is specifically configured to count the amount of data to be sent and/or bandwidth utilization of the X data links, if the amount of data to be sent of the m data links in the X data links is less than the first The preset data volume and/or bandwidth utilization are both smaller than the preset utilization, and it is determined to close the m data links; or,

The receiver 1001 is further configured to receive the data link reservation message sent by the first node; the processor 1003 is specifically configured to count the amount of data to be sent and/or bandwidth utilization of the X data links, if the X data links The amount of data to be sent in the K data links is less than the first preset data amount and/or the bandwidth utilization rate is less than the preset utilization rate, and the network delay of at least one K data link is less than the preset For the delayed data link, it is determined to close the m data links except the reserved data link among the K data links; 2≤K≤X, K is an integer.

Optionally, the receiver 1001 is further configured to receive a link opening notification message sent by the first node; wherein, the link opening notification message includes the information of at least one of the m data links that the first node notifies to open Information; the processor 1003 is further configured to enable at least one data link according to the link opening notification message.

Optionally, the processor 1003 is further configured to enable at least one of the m data links when the second node 100 receives a second preset amount of data sent to the first node within a preset time period. link; the sender 1004 is also used for the second node 100 to send a link start notification message to the first node, and notify the first node to start at least one data link; wherein, the link start notification message includes at least one data link information.

The second node provided in the embodiment of the present invention can jointly determine with the first node that the amount of data to be sent is less than the first preset Part of the data link whose data volume and/or bandwidth utilization rate is less than the preset utilization rate is closed, when the first node receives the data transmitted between the closed data link and the second node at a relatively long interval, The certain data link will not frequently switch between the L ₀ state and the low power consumption state, so the energy saving effect of the data center can be improved.

An embodiment of the present invention also provides a data link management system, including: any first node as provided in Embodiment 4 or Embodiment 5, and/or, as in any one of Embodiment 6 or Embodiment 7 second node.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.

The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, or in the form of hardware plus software function modules.

The above-mentioned integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The above-mentioned software function modules are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), magnetic disk or optical disk, etc., which can store program codes. medium.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (21)

1. A method for data link management, comprising:

the method comprises the steps that a first node obtains the data volume to be sent and/or the bandwidth utilization rate of N data links communicated with a second node; wherein N is more than or equal to 2 and is an integer;

when the data volume to be sent of M data links in the N data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate, the first node sends a link closing request message to the second node; wherein the link shutdown request message includes information of X data links of the M data links that the first node requests the second node to shutdown; m is more than or equal to 2 and less than or equal to N, X is more than or equal to 1 and less than or equal to M, and M, X are integers;

the first node receives a link closing response message sent by the second node, wherein the link closing response message comprises information of m data links determined to be closed by the second node; wherein, when X is more than or equal to 1 and less than M, M is more than or equal to 1 and less than or equal to X; when X is M, M is more than or equal to 1 and less than X; m is an integer;

and the first node closes the m data links according to the link closing response message.

2. The method of claim 1, wherein after the first node receives the link shutdown response message sent by the second node, the method further comprises:

the first node updates a network node communication table according to the information of the m data links, wherein the network node communication table comprises the information of the data links for communicating the first node with the second node;

and the first node updates a routing table according to the updated network node communication table, so that the first node transmits data with the second node according to the updated routing table.

3. The method according to claim 1 or 2, wherein before the first node sends a link shutdown request message to the second node, the method further comprises:

the first node reserves data links of at least one data link of the M data links, wherein the network delay is less than a preset delay, and the X data links are data links of the M data links except the reserved data links; or,

the first node sends a data link reservation message to the second node, and is used for requesting the second node to reserve at least one data link which is in K data links and has network delay smaller than preset delay, wherein the X data links are the M data links; the K data links are data links determined by the second node that the data volume to be sent in the X data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate; k is more than or equal to 2 and less than or equal to X; k is an integer.

4. The method according to any of claims 1-3, wherein after the first node closes the m data links according to the link close response message, the method further comprises:

when the first node receives data, sent to the second node, of a second preset data volume within a preset time period, the first node starts at least one data link in the m data links;

the first node sends a link opening notification message to the second node to notify the second node to open the at least one data link; wherein the link up notification message includes information of the at least one data link.

5. The method according to any of claims 1-3, wherein after the first node closes the m data links according to the link close response message, the method further comprises:

the first node receives a link opening notification message sent by the second node; wherein the link opening notification message includes information that the second node notifies at least one of the m data links that are opened;

and the first node opens the at least one data link according to the link opening notification message.

6. A method for data link management, comprising:

the second node receives a link closing request message sent by the first node; wherein the link shutdown request message includes information of X data links of the M data links that the first node requests the second node to shutdown; the M data links are data links determined by the first node, in which the data volume to be sent in the N data links communicated with the second node is less than a first preset data volume and/or the bandwidth utilization rate is less than a preset utilization rate; x is more than or equal to 1 and less than or equal to M, M is more than or equal to 2 and less than or equal to N, and N, M, X are integers;

the second node determines to close m data links in the X data links according to the link closing request message; wherein, when X is more than or equal to 1 and less than M, M is more than or equal to 1 and less than or equal to X; when X is M, M is more than or equal to 1 and less than X; m is an integer;

the second node generates a link closing response message according to the information of the m data links and sends the link closing response message to the first node, so that the first node closes the m data links according to the link closing response message;

the second node closes the m data links.

7. The method of claim 6, wherein after the second node determines to close m of the X data links according to the link close request message, the method further comprises:

the second node updates a network node communication table according to the information of the m data links, wherein the network node communication table comprises the information of the data links of the second node and the first node;

and the second node updates a routing table according to the updated network node communication table, so that the second node transmits data with the first node according to the updated routing table.

8. The method according to claim 6 or 7, wherein the second node determines to close m data links of the X data links according to the link close request message, comprising:

the second node counts the data volume to be sent and/or the bandwidth utilization rate of the X data links, and if the data volume to be sent of m data links in the X data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate, the m data links are determined to be closed;

or,

the second node receives a data link reservation message sent by the first node; the second node counts data volume to be sent and/or bandwidth utilization rate of the X data links, if the data volume to be sent of K data links in the X data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate, reserving data links of which the network delay is smaller than the preset delay in at least one K data link, and determining to close m data links except the reserved data links in the K data links; k is more than or equal to 2 and less than or equal to X, and K is an integer.

9. The method according to any of claims 6-8, wherein after the second node closes the m data links, the method further comprises:

the second node receives a link opening notification message sent by the first node; wherein, the link starting notification message includes information of at least one data link in the m data links which are started by the first node;

and the second node opens the at least one data link according to the link opening notification message.

10. The method according to any of claims 6-8, wherein after the second node closes the m data links, the method further comprises:

when the second node receives data, sent to the first node, of a second preset data volume within a preset time period, the second node starts at least one data link in the m data links;

the second node sends a link opening notification message to the first node to notify the first node to open the at least one data link; wherein the link up notification message includes information of the at least one data link.

11. A first node, comprising:

the acquiring unit is used for acquiring the data volume to be sent and/or the bandwidth utilization rate of N data links communicated with the second node; wherein N is more than or equal to 2 and is an integer;

a sending unit, configured to send a link shutdown request message to the second node when data volumes to be sent of M data links in the N data links are all smaller than a first preset data volume and/or bandwidth utilization rates are all smaller than a preset utilization rate; wherein the link shutdown request message includes information of X data links of the M data links that the first node requests the second node to shutdown; m is more than or equal to 2 and less than or equal to N, X is more than or equal to 1 and less than or equal to M, and M, X are integers;

a receiving unit, configured to receive a link shutdown response message sent by the second node, where the link shutdown response message includes information of m data links determined to be shutdown by the second node; wherein, when X is more than or equal to 1 and less than M, M is more than or equal to 1 and less than or equal to X; when X is M, M is more than or equal to 1 and less than X; m is an integer;

and the execution unit is used for closing the m data links according to the link closing response message.

12. The first node of claim 11, wherein the first node further comprises:

a first updating unit, configured to update a network node connectivity table according to information of the m data links, where the network node connectivity table includes information of data links through which the first node and the second node are communicated;

and the second updating unit is used for updating a routing table according to the updated network node communication table so that the first node transmits data with the second node according to the updated routing table.

13. The first node according to claim 11 or 12,

the first node further comprises a reservation unit, wherein the reservation unit is used for reserving a data link which is in at least one of the M data links and has network delay smaller than preset delay, and the X data links are data links except the reserved data link in the M data links; or,

the sending unit is further configured to send a data link reservation message to the second node, where the data link reservation message is used to request the second node to reserve a data link, of the at least one K data links, where network delay is less than a preset delay, and the X data links are the M data links; the K data links are data links determined by the second node that the data volume to be sent in the X data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate; k is more than or equal to 2 and less than or equal to X; k is an integer.

14. The first node according to any of claims 11-13,

the execution unit is further configured to open at least one data link of the m data links when the first node receives, within a preset time period, data of a second preset data volume that is sent to the second node;

the sending unit is further configured to send a link opening notification message to the second node, and notify the second node to open the at least one data link; wherein the link up notification message includes information of the at least one data link.

15. The first node according to any of claims 11-13,

the receiving unit is further configured to receive a link start notification message sent by the second node; wherein the link opening notification message includes information that the second node notifies at least one of the m data links that are opened;

the execution unit is further configured to open the at least one data link according to the link opening notification message.

16. A second node, comprising:

a receiving unit, configured to receive a link shutdown request message sent by a first node; wherein the link shutdown request message includes information of X data links of the M data links that the first node requests the second node to shutdown; the M data links are data links determined by the first node, in which the data volume to be sent in the N data links communicated with the second node is less than a first preset data volume and/or the bandwidth utilization rate is less than a preset utilization rate; x is more than or equal to 1 and less than or equal to M, M is more than or equal to 2 and less than or equal to N, and N, M, X are integers;

a determining unit, configured to determine to close m data links of the X data links according to the link closing request message; wherein, when X is more than or equal to 1 and less than M, M is more than or equal to 1 and less than or equal to X; when X is M, M is more than or equal to 1 and less than X; m is an integer;

a generating unit, configured to generate a link closing response message according to the information of the m data links;

a sending unit, configured to send the link shutdown response message to the first node, so that the first node shuts down the m data links according to the link shutdown response message;

an execution unit to close the m data links.

17. The second node according to claim 16, characterized in that the second node further comprises:

a first updating unit, configured to update a network node connectivity table according to information of the m data links, where the network node connectivity table includes information of data links through which the second node communicates with the first node;

and the second updating unit is used for updating a routing table according to the updated network node communication table so that the second node transmits data with the first node according to the updated routing table.

18. The second node according to claim 16 or 17,

the determining unit is specifically configured to count data volume to be sent and/or bandwidth utilization rate of the X data links, and determine to close m data links if the data volume to be sent of m data links in the X data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate;

or,

the receiving unit is further configured to receive a data link reservation message sent by the first node; the determining unit is specifically configured to count data volume to be sent and/or bandwidth utilization rate of the X data links, reserve at least one data link of which network delay is smaller than a preset delay, and determine to close m data links of the K data links except the reserved data link, if the data volume to be sent of the K data links of the X data links is smaller than a first preset data volume and/or the bandwidth utilization rate is smaller than a preset utilization rate; k is more than or equal to 2 and less than or equal to X, and K is an integer.

19. The second node according to any of claims 16-18,

the receiving unit is further configured to receive a link start notification message sent by the first node; wherein, the link starting notification message includes information of at least one data link in the m data links which are started by the first node;

the execution unit is further configured to open the at least one data link according to the link opening notification message.

20. The second node according to any of claims 16-18,

the execution unit is further configured to open at least one data link of the m data links when the second node receives, within a preset time period, data of a second preset data volume that is sent to the first node;

the sending unit is further configured to send, by the second node, a link opening notification message to the first node, and notify the first node to open the at least one data link; wherein the link up notification message includes information of the at least one data link.

21. A data link management system, comprising: a first node according to any of claims 11-15, and/or a second node according to any of claims 16-20.