WO2021057293A1

WO2021057293A1 - Message forwarding method and apparatus in evpn, and device and storage medium

Info

Publication number: WO2021057293A1
Application number: PCT/CN2020/108465
Authority: WO
Inventors: 唐亮
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-09-26
Filing date: 2020-08-11
Publication date: 2021-04-01
Also published as: CN112565045B; CN112565045A

Abstract

A message forwarding method and apparatus in an EVPN, and a device and a storage medium. The method comprises: receiving a message (S101), and preferentially forwarding the message from a local interface (S102), wherein the local interface is an interface belonging to a local area network. The apparatus comprises: a receiving module (701) for receiving the message; and a sending module (702) used for preferentially forwarding the message from the local interface, wherein the local interface is an interface belonging to the local area network.

Description

Message forwarding method, device, equipment and storage medium in EVPN

Cross-references to related applications

This application is filed based on a Chinese patent application with an application number of 201910919635.4 and an application date of September 26, 2019, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application by reference.

Technical field

The embodiment of the present invention relates to but not limited to the field of communications, and specifically relates to but not limited to a message forwarding method, device, device and storage medium in EVPN.

Background technique

In EVPN (Ethernet Virtual Private Network), when a packet in a device is transmitted to a destination address, there are usually multiple paths, that is, there are multiple next-hop interfaces, and there may be multiple next-hop interfaces. For interfaces that belong to a different VPN (Virtual Private Network) with the device, when packets are forwarded through the next-hop interface that belongs to a different VPN from the device, the packets need to be VXLAN (Virtual Extensible Local Area Network). Virtual extended local area network) encapsulation, and then detour through the VXLAN tunnel. After receiving the VXLAN packet, the next device needs to decapsulate the VXLAN packet, which increases the processing overhead of the device. At the same time, due to the increase of the VXLAN packet header , Increase the length of the message, which may result in the need to sub-package the message, which reduces the efficiency of device message forwarding.

Summary of the invention

The method, device, device, and storage medium for message forwarding in EVPN provided by the embodiments of the present invention solve the technical problems, at least to a certain extent, that the existing message forwarding efficiency is low and the overhead is high.

In order to at least solve the above technical problems to a certain extent, an embodiment of the present invention provides a message forwarding method in EVPN, including: receiving a message; forwarding the message preferentially from a local interface, where the local interface belongs to a local local area network Interface.

An embodiment of the present invention also provides a message forwarding device in EVPN, which includes: a receiving module for receiving messages; a sending module for forwarding the messages preferentially from a local interface, where the local interface belongs to a local local area network Interface.

The embodiment of the present invention also provides a device, the device includes a processor, a memory, and a communication bus; the communication bus is used to realize the connection and communication between the processor and the memory; the processor is used to execute one stored in the memory Or multiple computer programs to implement the steps of the message forwarding method in EVPN.

The embodiment of the present invention also provides a storage medium, the storage medium stores one or more computer programs, and the one or more computer programs can be executed by one or more processors to realize the message forwarding in the above-mentioned EVPN Method steps.

Other features and corresponding beneficial effects of the present invention are described in the latter part of the specification, and it should be understood that at least part of the beneficial effects will become apparent from the description in the specification of the present invention.

Description of the drawings

Fig. 1 is a flowchart of a method for forwarding packets in EVPN according to the first embodiment of the present invention;

FIG. 2 is a flowchart of a method for forwarding a message according to Embodiment 1 of the present invention;

Fig. 3 is a flowchart of a method for generating a hardware forwarding table according to the first embodiment of the present invention;

4 is a flowchart of a method for forwarding packets in EVPN according to the second embodiment of the present invention;

5 is a flowchart of a method for forwarding packets in EVPN according to the third embodiment of the present invention;

6 is a flowchart of a method for forwarding packets in EVPN according to the fourth embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a message forwarding device in EVPN according to the fifth embodiment of the present invention;

Fig. 8 is a schematic diagram of the structure of the device according to the sixth embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the embodiments of the present invention in detail through specific implementations in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

Example one:

In EVPN, when a packet from a device is transmitted to a destination address, there are usually multiple paths, that is, there are multiple next-hop interfaces, and the next-hop interface may have an interface that belongs to a different VPN from the device, and the device is receiving After the message arrives, it will select a next hop interface from all next hop interfaces corresponding to the destination address of the message according to policies such as load balancing, and then forward the message from the next hop interface. Since the selected next hop interface may be an interface that belongs to a different VPN from the device, when forwarding, the packet needs to be VXLAN encapsulated and then bypassed through the VXLAN tunnel. The next device will receive the VXLAN packet after receiving the VXLAN packet. , The need to decapsulate the VXLAN message, which increases the processing overhead of the device. At the same time, due to the increase of the VXLAN message header, the length of the message is increased, which may lead to the need to subpackage the message, which reduces the device message The efficiency of forwarding. In order to solve the above technical problems, an embodiment of the present invention provides a method for forwarding packets in EVPN. Referring to FIG. 1, the method for forwarding packets in EVPN includes:

S101. Receive a message.

In the embodiment of the present invention, during the operation of the device, a message sent by another device or a message generated by the device is received.

S102. The message is forwarded preferentially from the local interface.

In the embodiment of the present invention, after the message is received, the message is forwarded preferentially from the local interface. It should be noted that the local interface is an interface belonging to the local area network. Wherein, preferentially forwarding the message from the local interface includes: if there is a local interface in the next hop interface corresponding to the message, then the message is forwarded from the local interface; if the message corresponds to the next hop interface If there is no local interface, the packet will be forwarded from the corresponding next-hop interface.

Wherein, preferentially forwarding the message from the local interface can be: according to the destination address of the message, look up the routing and forwarding table corresponding to the message, and determine whether there is a next hop interface belonging to the local interface in the routing and forwarding table, if If it exists, the message is forwarded subordinate to the next hop interface of the local interface. If it does not exist, the message is forwarded subordinate to the next hop interface of the remote interface. It should be noted that the remote interface is an interface that does not belong to the local LAN, that is, the interface belongs to the remote LAN. The routing and forwarding table includes the destination address and the next hop interface corresponding to the destination address. It should be understood that each of the routing and forwarding tables The routing entry is obtained according to the routing protocol. For example, in the Equal-Cost Multipath Routing (Equal-Cost Multipath Routing) scenario, the ECMP routing entry is obtained according to the routing protocol corresponding to ECMP, and the ECMP routing forwarding table is generated; of course, in In other scenarios, routing entries can also be obtained according to the corresponding routing protocol to generate a routing forwarding table.

In the embodiment of the present invention, referring to FIG. 2, preferentially forwarding the message locally may also include:

S201: Determine whether there is a local interface in the next hop interface corresponding to the packet.

In the embodiment of the present invention, judging whether there is a local interface in the next hop interface corresponding to the message may include: judging whether there is a next hop interface in the next hop interface corresponding to the message according to a hardware forwarding table, where the hardware transfer The publication includes the destination address and the next hop interface belonging to the local interface corresponding to the destination address, that is, the next hop interface in the hardware forwarding table is all local interfaces. That is to say, after receiving the message, if the corresponding hardware forwarding table is found according to the destination address of the message, it indicates that there is a local interface in the next hop interface corresponding to the message, and the process goes to S202. Since this method requires a hardware forwarding table, before judging whether there is a next hop interface in the next hop interface corresponding to the message according to the hardware forwarding table, as shown in Figure 3, it also includes:

S301. Obtain a routing entry corresponding to a certain destination address.

Wherein, the routing entry includes the next hop interface corresponding to the destination address. In the embodiment of the present invention, the routing entry can be obtained according to the corresponding routing protocol. It should be noted that the obtained routing entries may include routing entries belonging to the remote interface and/or the local interface.

S302: Generate a hardware forwarding table of the destination address based on the routing entry belonging to the local interface among the routing entries corresponding to the destination address.

That is, the next hop interface belonging to the local interface corresponding to the destination address is added to the hardware forwarding table.

In the embodiment of the present invention, judging whether there is a local interface in the next hop interface corresponding to the message may include: judging whether there is a next hop interface in the next hop interface corresponding to the message according to the target address, and if the purpose of the message is If the address matches the target address, it indicates that there is a local interface in the next hop interface corresponding to the message, and then go to S202. Among them, the target address is already determined, and the address of the local interface exists in the corresponding next hop interface. Among them, the destination ACL (Access Control Lists) entry can be used to determine whether the destination address of the packet matches the destination address. When the packet hits the destination ACL entry, it indicates that the destination address of the packet matches the destination address. S202, where the target ACL entry includes the target address, and the message hits the target ACL entry means that the message matches the target address in the target ACL entry. The target ACL entry can be generated according to the target address after the target address is determined, and its action To forward packets from the local interface. In this method, the destination address is needed to determine whether there is a local interface in the next hop interface corresponding to the message. Therefore, the target address is used to determine whether there is a next hop interface in the next hop interface corresponding to the message. , Also includes: determining the target address.

In the embodiment of the present invention, determining the target address may include: receiving a message and determining that there is a local interface in the next hop interface corresponding to the message, setting the target address of the message as the target address. Here, you can find the routing and forwarding table corresponding to the message and determine whether the next hop interface belonging to the local interface is found in the routing and forwarding table to determine whether there is a local next hop interface corresponding to the message. interface.

In the embodiment of the present invention, determining the target address may include: when a routing entry group corresponding to a certain destination address is obtained, or when a new routing entry is obtained, judging whether there is a next hop belonging to the local interface in the routing entry If the interface exists, set the destination address in the routing entry as the destination address.

S202: When there is a local interface in the next hop interface corresponding to the message, forward the message from the local interface.

In the embodiment of the present invention, when a local interface exists in the next hop interface corresponding to the message, the message can be directly forwarded from the local interface, or the message can be added to the target QOS (Quality of Service, quality of service) queue In which, the message in the target QOS queue is forwarded from the local interface.

Among them, when judging whether there is a next hop interface in the next hop interface corresponding to the message according to the hardware forwarding table in S201, when the message is forwarded from the local interface, it can be directly transferred from the hardware forwarding table corresponding to the message Select a next hop interface (because the hardware forwarding table only includes the next hop interface belonging to the local interface, therefore, the next hop interface selected must be the local interface), and the message is selected from the next hop interface. Hop interface forwarding.

In S201, when judging whether there is a next-hop interface in the next-hop interface corresponding to the message according to the target address, when the message is forwarded from the local interface, the routing and forwarding table corresponding to the message is searched, and the message In the routing and forwarding table corresponding to the text, select a next-hop interface belonging to the local interface, and forward the packet from the selected next-hop interface.

In the method for forwarding messages in EVPN provided by the embodiment of the present invention, by receiving messages, the messages are forwarded preferentially from the local interface. The local interface is an interface belonging to the local local area network. In some implementation processes, the message is preferentially forwarded from the local interface. Forwarding reduces the process of VXLAN encapsulation and decapsulation of packets, thereby improving the efficiency of packet forwarding.

Embodiment two:

For a better understanding of the present invention, this embodiment is described in conjunction with more specific examples. Referring to FIG. 3, FIG. 4 is a flowchart of a method for forwarding packets in EVPN according to an embodiment of the present invention, including:

S401. Obtain an ECMP group of a certain destination address.

In the embodiment of the present invention, the device obtains the ECMP group of a certain destination address according to the ECMP routing protocol, and the ECMP group includes the next hop interface corresponding to the destination address.

For example, suppose the device obtains an ECMP group with a destination address of 100.0.0.1, including 4 next-hop interfaces, namely 10.1.1.1, 20.1.1.1, 30.1.1.1, and 40.1.1.1. Among them, 10.1.1.1 and 20.1.1.1 are local interfaces, and 30.1.1.1 and 40.1.1.1 are remote interfaces learned through EVPN RT2.

S402: Generate a hardware forwarding table of the destination address according to the ECMP group of the destination address.

Among them, the hardware forwarding table includes the destination address, and the next hop address of the local interface in the ECMP group of the destination address.

Following the above example, the hardware forwarding table with the destination address of 100.0.0.1 is shown in Table 1.

Table 1

S403. Receive a message.

S404. Search the hardware forwarding table corresponding to the message.

In the embodiment of the present invention, the hardware forwarding table of the message is found according to the destination address of the message.

Continuing the above example, assuming that the destination address of the received message is 100.0.0.1, Table 1 is found.

S405: Forward the message from the local interface according to the hardware forwarding table.

In the embodiment of the present invention, forwarding the message from the local interface according to the hardware forwarding table includes selecting a next hop interface from the hardware forwarding table, and forwarding the message from the selected next hop interface. Among them, a next hop interface can be selected according to parameters such as the current load status of each next hop interface.

Continuing the above example, select a next hop interface from Table 1. If 10.1.1.1 is selected, the message will be forwarded from 10.1.1.1.

Example three:

For a better understanding of the present invention, this embodiment is described in conjunction with more specific examples. Referring to FIG. 3, FIG. 5 is a flowchart of a method for forwarding packets in EVPN according to an embodiment of the present invention, including:

S501. Receive a message.

S502: Determine whether there is a local interface in the next hop interface corresponding to the message.

If yes, go to S503; if not, go to S507.

Among them, judging whether the message belongs to a local message can be, judging whether the next hop interface belonging to the local interface can be found from the ECMP routing and forwarding table corresponding to the message, if found, go to S503; if not found , Then go to S507.

S503: Forward the message from the local interface.

The packet is forwarded from the next hop interface that belongs to the local interface found.

S504: Generate a target ACL entry according to the destination address of the message.

The target ACL entry includes the destination address of the packet, and its action is local forwarding.

S505: Receive a message.

S506: When the message hits the target ACL entry, forward the message from the local interface.

Wherein, the packet hitting the target target ACL entry includes that the destination address of the packet matches the destination address in the target target ACL entry. When the message hits a target ACL entry, forwarding the message from the local interface includes: finding the corresponding ECMP routing and forwarding table according to the message, selecting a next-hop interface belonging to the local interface, and sending the message. The text is forwarded from the selected local interface.

If the packet does not hit all target ACL entries, a next-hop interface is selected from the ECMP routing and forwarding table corresponding to the packet, and the packet is forwarded from the selected next-hop interface.

S507. Select a next hop interface from the routing and forwarding table, and forward the message.

Since there is no next hop interface belonging to the local interface in the routing and forwarding table corresponding to the message, a next hop interface is selected from the ECMP routing and forwarding table, and the message is forwarded from the selected next hop interface .

In order to better understand the present invention, here is an example for description. Assuming that the destination address is 100.0.0.2, the obtained ECMP routing and forwarding table is shown in Table 2. Among them, 10.1.1.2 and 20.1.1.2 belong to the local interface, and 30.1 .1.2 belongs to the remote interface. When a message with a destination address of 100.0.0.2 is received for the first time, Table 2 is found, and the next hop interface is judged according to Table 2 to have a local interface, and it is forwarded from 10.1.1.2 or 20.1.1.2, and A target ACL entry including 100.0.0.2 is formed, and its action is local forwarding. When subsequent packets with a destination address of 100.0.0.2 are received, they will all hit the target ACL entry, and then 10.1.1.2 or 20.1.1.2 are preferred to be forwarded from Table 2.

Table 2

Embodiment four:

For a better understanding of the present invention, this embodiment is described in conjunction with more specific examples. Referring to FIG. 3, FIG. 6 is a flowchart of a method for forwarding packets in EVPN according to an embodiment of the present invention, including:

S601. Receive a message.

S602: Determine whether there is a local interface in the next hop interface corresponding to the message.

If yes, go to S603; if not, go to S608.

Among them, judging whether the message belongs to a local message can be, judging whether the next hop interface belonging to the local interface can be found from the ECMP routing and forwarding table corresponding to the message, if it is found, go to S603; if it is not found , Then go to S608.

S603. Forward the message from the local interface.

S604: Generate a target ACL entry according to the destination address of the message.

The target ACL entry includes the destination address of the message, and its action is to add to the target QOS queue.

S605. Receive a message.

S606: When the message hits the target ACL entry, add the message to the target QOS queue.

Wherein, the packet hitting the target ACL entry includes that the destination address of the packet matches the destination address in the target ACL entry. When the message hits a certain target ACL entry, the message is added to the target QOS queue, where the target QOS queue is a queue for the message to be forwarded from the local interface.

S607: Forward the message in the target QOS queue from the local interface.

Forwarding the message in the target QOS queue from the local interface includes: extracting the message from the target QOS queue, finding the corresponding ECMP routing and forwarding table based on the message, selecting a next hop interface belonging to the local interface, and The message is forwarded from the selected local interface.

S608. Select a next hop interface from the routing and forwarding table, and forward the message.

In order to better understand the present invention, an example is described here. Assuming that the destination address is 100.0.0.3, the obtained ECMP routing and forwarding table is shown in Table 3. Among them, 10.1.1.3 and 20.1.1.3 belong to the local interface, and 30.1 .1.3 belongs to the remote interface. When a message with a destination address of 100.0.0.3 is received for the first time, Table 3 is found, and it is determined according to Table 3 that there is a local interface in the next hop interface, and it is forwarded from 10.1.1.3 or 20.1.1.3, and A target ACL entry including 100.0.0.3 is formed, and its action is to add it to the target QOS queue. When subsequent messages with a destination address of 100.0.0.3 are received, the target ACL entry will be hit and added to the target QOS queue. Then, extract a message from the QOS queue, find the ECMP routing and forwarding table corresponding to the message, select a next hop interface belonging to the local interface from the ECMP routing and forwarding table, and forward the message, for example, For a message with a destination address of 100.0.0.3, select 10.1.1.3 or 20.1.1.3 to forward it.

table 3

Example five

On the basis of the first, second, third, and fourth embodiments, the embodiment of the present invention proposes a message forwarding device in EVPN. As shown in FIG. 7, the device includes a receiving module 701 and a sending module 702.

The receiving module 701 is used to receive messages. In some instances, messages sent by other devices or locally generated messages are received.

The sending module 702 preferentially forwards the message from the local interface. It should be noted that the local interface is an interface belonging to the local area network. Wherein, preferentially forwarding the message from the local interface includes: if there is a local interface in the next hop interface corresponding to the message, then the message is forwarded from the local interface; if the message corresponds to the next hop interface If there is no local interface, the packet will be forwarded from the corresponding next-hop interface.

Wherein, preferentially forwarding the message from the local interface can be: according to the destination address of the message, look up the routing and forwarding table corresponding to the message, and determine whether there is a next hop interface belonging to the local interface in the routing and forwarding table, if If it exists, the message is forwarded subordinate to the next hop interface of the local interface. If it does not exist, the message is forwarded subordinate to the next hop interface of the remote interface. It should be noted that the remote interface is an interface that does not belong to the local LAN, that is, the interface belongs to the remote LAN. The routing and forwarding table includes the destination address and the next hop interface corresponding to the destination address. It should be understood that each of the routing and forwarding tables The routing entry is obtained according to the routing protocol. For example, in the ECMP scenario, the ECMP routing entry is obtained according to the routing protocol corresponding to ECMP, and the ECMP routing forwarding table is generated; of course, in other scenarios, the route can also be obtained according to the corresponding routing protocol The entry generates a routing forwarding table.

In the embodiment of the present invention, preferentially forwarding the message from the local may also include: judging whether there is a local interface in the next hop interface corresponding to the message; when there is a local interface in the next hop interface corresponding to the message, sending the message The text is forwarded from the local interface.

In the embodiment of the present invention, judging whether there is a local interface in the next hop interface corresponding to the message may include: judging whether there is a next hop interface in the next hop interface corresponding to the message according to a hardware forwarding table, where the hardware transfer The publication includes the destination address and the next hop interface belonging to the local interface corresponding to the destination address, that is, the next hop interface in the hardware forwarding table is all local interfaces. In other words, after receiving a message, according to the destination address of the message, if the corresponding hardware forwarding table is found, it indicates that there is a local interface in the next hop interface corresponding to the message. Because this method requires a hardware forwarding table, before judging whether there is a next hop interface in the next hop interface corresponding to the message according to the hardware forwarding table, it also includes: obtaining a routing entry corresponding to a destination address Based on the routing entry corresponding to the destination address, the routing entry belonging to the local interface generates the hardware forwarding table of the destination address, that is, the next hop interface belonging to the local interface corresponding to the destination address is added to the hardware forwarding table. Wherein, the routing entry includes the next hop interface corresponding to the destination address. In the embodiment of the present invention, the routing entry can be obtained according to the corresponding routing protocol. It should be noted that the obtained routing entries may include routing entries belonging to the remote interface and/or the local interface.

In the embodiment of the present invention, judging whether there is a local interface in the next hop interface corresponding to the message may include: judging whether there is a next hop interface in the next hop interface corresponding to the message according to the target address, and if the purpose of the message is If the address matches the destination address, it indicates that there is a local interface in the next hop interface corresponding to the packet. Among them, the target address is already determined, and the address of the local interface exists in the corresponding next hop interface. Among them, the destination ACL entry can be used to determine whether the destination address of the packet matches the destination address. When the packet hits the destination ACL entry, it indicates that the destination address of the packet matches the destination address. The destination ACL entry includes the destination address and the destination address. The message hits the target ACL entry means that the message matches the target address in the target ACL entry. The target ACL entry can be generated according to the target address after the target address is determined, and its action is to forward the message from the local interface. In this method, the destination address is needed to determine whether there is a local interface in the next hop interface corresponding to the message. Therefore, the target address is used to determine whether there is a next hop interface in the next hop interface corresponding to the message. , Also includes: determining the target address.

Among them, when judging whether there is a next hop interface in the next hop interface corresponding to the message according to the hardware forwarding table, when forwarding the message from the local interface, you can directly select from the hardware forwarding table corresponding to the message A next hop interface (because the hardware forwarding table only includes the next hop interface belonging to the local interface, therefore, the selected next hop interface must be the local interface), and the packet is transferred from the selected next hop interface Forward.

When judging whether there is a next hop interface in the next hop interface corresponding to the message according to the destination address, when forwarding the message from the local interface, the routing and forwarding table corresponding to the message is searched, and the message corresponds to In the routing and forwarding table, select a next hop interface belonging to the local interface, and forward the packet from the selected next hop interface.

In the embodiment of the present invention, the receiving module 701 may be implemented by an antenna or other hardware modules, and the transmitting module 702 may be implemented by an antenna or other hardware modules.

The message forwarding device in EVPN provided by the embodiment of the present invention forwards the message preferentially from the local interface by receiving the message. The local interface is an interface belonging to the local local area network. In some implementation processes, the message is preferentially forwarded from the local interface. Forwarding reduces the process of VXLAN encapsulation and decapsulation of packets, thereby improving the efficiency of packet forwarding.

Example Six

An embodiment of the present invention provides a device. As shown in FIG. 8, it includes a processor 801, a memory 802, and a communication bus 803, where:

The communication bus 803 is used to implement connection and communication between the processor 801 and the memory 802;

The processor 801 is configured to execute one or more computer programs stored in the memory 802 to implement at least one step in the method for forwarding messages in EVPN in the above-mentioned Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4.

The embodiment of the present invention also provides a storage medium, which includes volatile or non-volatile data implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules, or other data). Non-volatile, removable or non-removable media. Computer readable storage media include but are not limited to RAM (Random Access Memory), ROM (Read-Only Memory, read-only memory), EEPROM (Electrically Erasable Programmable read only memory, charged Erasable Programmable Read-Only Memory) ), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, Or any other medium that can be used to store desired information and that can be accessed by a computer.

The storage medium in the embodiment of the present invention may be used to store one or more computer programs, and the stored one or more computer programs may be executed by a processor to implement the above-mentioned Embodiment 1, Embodiment 2, Embodiment 3 and Embodiments. At least one step in the packet forwarding method in the EVPN of No. 4.

The device and storage medium provided by the embodiment of the present invention, by receiving the message, preferentially forward the message from the local interface. The local interface is an interface belonging to the local local area network. In some implementation processes, the message is preferentially forwarded from the local interface. The process of VXLAN encapsulation and decapsulation of packets is reduced, thereby improving the efficiency of packet forwarding.

It can be seen that those skilled in the art should understand that all or some of the steps in the methods disclosed above, the functional modules/units in the system, and the device can be implemented as software (which can be implemented by computer program code executable by a computing device. ), firmware, hardware and their appropriate combination. In hardware implementations, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may consist of several physical components. The components are executed cooperatively. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit .

In addition, as is well known to those of ordinary skill in the art, communication media usually contain computer-readable instructions, data structures, computer program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery medium. Therefore, the present invention is not limited to any specific combination of hardware and software.

The above content is a further detailed description of the embodiments of the present invention in combination with specific implementations, and it cannot be considered that the specific implementations of the present invention are limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

A method for forwarding messages in an Ethernet virtual private network EVPN includes:

Receive message;

The message is preferentially forwarded from a local interface, and the local interface is an interface belonging to a local local area network.
The method for forwarding messages in EVPN according to claim 1, wherein said forwarding said messages preferentially from a local interface comprises:

When a local interface exists in the next hop interface corresponding to the message, the message is forwarded from the local interface.
The method for forwarding messages in EVPN according to claim 2, wherein said forwarding the message from the local interface when there is a local interface in the next hop interface corresponding to the message comprises:

When the corresponding hardware forwarding table is found according to the destination address of the message, the message is forwarded from the local interface, and the hardware forwarding table includes the destination address and the corresponding next-hop interface belonging to the local interface .
The method for forwarding messages in EVPN according to claim 2, wherein said forwarding the message from the local interface when there is a local interface in the next hop interface corresponding to the message comprises:

When the destination address of the message matches the target address, the message is forwarded from the local interface, where the target address is the destination address of the local interface in the corresponding next hop interface.
5. The method for forwarding messages in EVPN according to claim 4, wherein when the destination address of the message matches the destination address, forwarding the message from the local interface comprises:

When the message hits the target access control list ACL entry, the message is forwarded from the local interface, and the message hits the target ACL entry including the destination address of the message and the target in the target ACL entry The addresses match.
The method for forwarding messages in EVPN according to claim 4, wherein said forwarding the messages from a local interface comprises:

Adding the message to the target quality of service QOS queue;

The message in the target QOS queue is forwarded from the local interface.
The method for forwarding messages in EVPN according to claim 4, wherein when the destination address of the message matches the destination address, before forwarding the message from the local interface, the method further comprises:

When receiving a message and determining that there is a local interface in the next hop interface corresponding to the message, setting the destination address of the message as the target address;

or,

When the next hop interface in the obtained routing entry belongs to the local interface, the destination address in the routing entry is set as the target address.
A message forwarding device in EVPN includes:

The receiving module is used to receive messages;

The sending module is configured to forward the message preferentially from a local interface, and the local interface is an interface belonging to a local local area network.
A device that includes a processor, a memory, and a communication bus; among them:

The communication bus is used to realize the connection and communication between the processor and the memory;

The processor is configured to execute one or more computer programs stored in the memory to implement the steps of the method for forwarding messages in EVPN according to any one of claims 1 to 7.
A storage medium storing one or more computer programs, wherein the one or more computer programs can be executed by one or more processors to implement the EVPN according to any one of claims 1 to 7 Steps of the message forwarding method.