CN105721298A - Method and system for CPE (Customer Premises Equipment) to realize Internet surfing through two WAN (Wide Area Network) ports - Google Patents
Method and system for CPE (Customer Premises Equipment) to realize Internet surfing through two WAN (Wide Area Network) ports Download PDFInfo
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- CN105721298A CN105721298A CN201610093822.8A CN201610093822A CN105721298A CN 105721298 A CN105721298 A CN 105721298A CN 201610093822 A CN201610093822 A CN 201610093822A CN 105721298 A CN105721298 A CN 105721298A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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Abstract
The invention discloses a method and a system for CPE (Customer Premises Equipment) to realize Internet surfing through two WAN (Wide Area Network) ports. The method comprises the following steps of sending an Internet surfing request to the CPE equipment by an under-hung terminal and sending an address request to a server by the CPE equipment; if the address request is unsuccessful, sending the address request; if the address request is successful, judging whether the WAN ports connected to the under-hung terminal are bound with a link; if the link is not bound, employing default routing and conducting an analysis through a default DNS (Domain Name System) server; if the link is bound, judging whether policy routing is established by the link; if the policy routing is established, employing the policy routing and conducting an analysis through the DNS server of the link, otherwise employing the default routing, conducting an analysis through the default DNS server and making the Internet surfing request reach the network. According to the method and the system, the flow sharing is realized, the link redundancy is reduced, the flow sharing of various bound and unbound WAN ports is met, the different DNS addresses are bound for the requests of different links, the DNS forwarding is realized, and the security is realized.
Description
Technical field
The present invention relates to family gateway equipment field, be specifically related to a kind of cpe device and realize the method and system of double; two WAN mouth online.
Background technology
In order to increase safety and the availability of network, link is needed to have the function of redundancy and backup, and the load balancing of flow can be realized, bandwidth for extended network equipment and server, increase handling capacity, Strengthens network data-handling capacity, improve motility and the availability of network, server data traffic reasonably distributed in server zone is born jointly, improve speed of response of server, effective solution data traffic is excessive, the problem that network load is overweight, for this, require that LAN can access double, two WAN (WideAreaNetwork within the same time, wide area network) mouth；Meet this demand it is also desirable to consider DNSRelay, interrupting and recovering taking into account of function of link, to realize traffic sharing mechanism and the link backup of optimum, therefore, be badly in need of a kind of method realizing double; two WAN mouth online.
Summary of the invention
The technical problem to be solved is the interruption and the recovery function that meet the backup of link, the load balancing of flow, DNSRelay, link, the problem of traffic sharing mechanism and link backup to realize optimum.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is to provide a kind of method that cpe device realizes double; two WAN mouth online, comprises the following steps:
Step 101: lower terminal of hanging sends online request to cpe device, and cpe device sends Address requests to server；
Step 102: judge that whether Address requests is successful, if Address requests success, then performs step 103, otherwise, performs step 101；
Step 103: judge whether this connect WAN mouth of lower extension terminal has bound link, if it is, perform step 104, otherwise, performs step 106；
Step 104: judge whether this link has built up policybased routing, if it is, perform step 105, otherwise, performs step 106；
Step 105: walk policybased routing, is resolved by the dns server of link, goes to step 107；
Step 106: walk default route, is resolved by the dns server given tacit consent to, goes to step 107；
Step 107: online request arrives network.
In technique scheme, described link includes the first link and the second link, and described WAN mouth includes a WAN mouth and the 2nd WAN mouth, and described lower extension terminal includes first time hanging terminal and hanging terminal second time；
Hanging terminal described first time for hanging under a described WAN mouth of described first link bundling, described first link is primary link, and described second link is standby link；
Hanging terminal described second time for hanging under the described 2nd WAN mouth of described second link bundling, described second link is primary link, and described first link is standby link.
In technique scheme, when described first link down, described second link comes into force automatically, and delete the policybased routing of described first link, default route and dns address, if described first link interrupted can be used, then described first link can recover voluntarily, adds the policybased routing of described first link, default route and dns address, and line period of going forward side by side is safeguarded.
In technique scheme, binding the described lower extension terminal hung under the described WAN mouth of described link and walk policybased routing, the described lower extension terminal hung under the described WAN mouth of unbound described link walks the default route that priority is the highest.
Present invention also offers a kind of cpe device and realize the system of double; two WAN mouth online, including DNS forwarding module, routing module control and link-recovery module, wherein,
DNS forwarding module, if the connect WAN mouth of lower extension terminal has bound link, the dns server that request message is transmitted to binding link when dns resolution resolves；If lower extension terminal the connect WAN unbound link of mouth, then take the dns server setting up link for the last time and default DNS server resolves；When binding the link down of WAN mouth, delete the dns server of this link, automatically search default DNS server；
Routing module control, link, when setting up, if this link bundling WAN mouth, then sets up policybased routing and the default route of this link, and the priority of the default route every time set up is higher than the priority of the default route existed；
Link-recovery module, the link interrupted is when recovering, carry out periodic maintenance, if periodic maintenance failure, described routing module control delete the policybased routing of link, default route and dns address, standby link comes into force automatically, link-recovery periodically sends Address requests to server, until can be used simultaneously.
In technique scheme, described link includes the first link and the second link, and described WAN mouth includes a WAN mouth and the 2nd WAN mouth, and described lower extension terminal includes first time hanging terminal and hanging terminal second time；
Hanging terminal described first time for hanging under a described WAN mouth of described first link bundling, described first link is primary link, and described second link is standby link；
Hanging terminal described second time for hanging under the described 2nd WAN mouth of described second link bundling, described second link is primary link, and described first link is standby link.
In technique scheme, also include processing module, when described first link down, described second link comes into force automatically, and delete the policybased routing of described first link, default route and dns address, if described first link interrupted can be used, then described first link can recover voluntarily, adding the policybased routing of described first link, default route and dns address, line period of going forward side by side is safeguarded.
In technique scheme, binding the described lower extension terminal hung under the described WAN mouth of described link and walk policybased routing, the described lower extension terminal hung under the described WAN mouth of unbound described link walks the default route that priority is the highest.
The present invention makes both links active and standby each other, compared with conventional single primary link, carry out traffic sharing better, decreased link redundancy, if the link interrupted can be used, then this link can recover voluntarily, carries out the interpolation routeing when recovering, meets each binding and the traffic sharing of unbound WAN mouth, request additionally for different links, carry out different dns address binding, it is achieved that DNS forwards, and strengthens safety.
Accompanying drawing explanation
Fig. 1 realizes the schematic diagram of double; two WAN mouth online for a kind of cpe device that the embodiment of the present invention provides；
Fig. 2 realizes the method flow diagram of double; two WAN mouth online for a kind of cpe device that the embodiment of the present invention provides；
Fig. 3 realizes the system schematic of double; two WAN mouth online for a kind of cpe device that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the present invention is described in detail.
Embodiments provide a kind of method that cpe device realizes double; two WAN mouth online, main/slave link is determined based on port binding, two online links are active and standby each other, a wherein link down, and another link comes into force automatically, such as the first link and the second link, for main frame pc1 and the pc2 hung under a WAN mouth of the first link bundling, the first link is primary link, and the second link is standby link, preferential use the first link, re-uses the second link after the first link down；For main frame pc3 and the pc4 hung under the 2nd WAN mouth of the second link bundling, the second link is primary link, and the first link is standby link, preferential use the second link, re-uses the first link after the second link down；For unbound WAN mouth, be the last link set up forever it is primary link, the link previously set up is reserve link, as shown in Figure 1 and Figure 2, Fig. 1 realizes the schematic diagram of double; two WAN mouth online for a kind of cpe device that the embodiment of the present invention provides, main application scenarios is: high-speed radio gateway (CPE) WAN-side has both links, to meet lower extension terminal (such as PC, intelligent terminal etc.) traffic demand and the link backup of high-speed radio gateway；Fig. 2 realizes the method flow diagram of double; two WAN mouth online for a kind of cpe device that the embodiment of the present invention provides, and comprises the following steps:
Step 101, lower extension terminal send online request to high-speed radio gateway (CPE), and then high-speed radio gateway sends Address requests to server.
Step 102, judge Address requests whether success, if Address requests success, then perform step 103；Otherwise, step 101 is performed.
Step 103, judge whether this lower connect port of extension terminal has bound link, if it is, perform step 104；Otherwise, step 106 is performed.
Step 104, judge whether this link has built up policybased routing, if it is, perform step 105；Otherwise, step 106 is performed.
Step 105, walk policybased routing, resolved by the dns server of this link, go to step 107.
Step 106, walk default route, resolved by the dns server given tacit consent to, go to step 107.
It should be noted that the lower extension terminal hung under the WAN mouth of binding link walks policybased routing, the lower extension terminal hung under the WAN mouth of unbound link walks the default route that priority is the highest.
Step 107, online request arrive network.
Such as, when the first link down, second link comes into force automatically, and delete the policybased routing of the first link, default route and dns address, at this moment default route only has the default route of the second link, unbound WAN mouth directly walks the default route of the second link, is tied to a WAN mouth on the first link and has deleted because of policybased routing and the default route of the first link, also walks the default route of the second link.
It should be noted that, if the first link interrupted can be used, then the first link can recover voluntarily, the policybased routing of the first link, default route and dns address is added when recovering, line period of going forward side by side is safeguarded, whether cycle detection the first link can be used, if available, then whether cycle detection the first link can be used, to ensure the connection of the first link；If the first link is unavailable, then deleting the policybased routing of the first link, default route and dns address, the second link comes into force automatically, periodically sends Address requests to server simultaneously, until the first link-recovery can be used.
It addition, at the first link-recovery, when adding policybased routing, default route and dns address, the binding WAN mouth that policybased routing preferentially route, default route has precedence over the default route that there is link, meets the last link set up and is always primary link.
The embodiment of the present invention additionally provides a kind of cpe device and realizes the system of double; two WAN mouth online, as it is shown on figure 3, include DNS forwarding module 10, routing module control 20 and link-recovery module 30, wherein,
DNS forwarding module 10, if the connect WAN mouth of lower extension terminal has bound link, the dns server that request message is transmitted to binding link when dns resolution resolves；If lower extension terminal the connect WAN unbound link of mouth, then take the dns server setting up link for the last time and default DNS server resolves；When binding the link down of WAN mouth, delete the dns server of this link, automatically search default DNS server；
Routing module control 20, link, when setting up, if this link bundling WAN mouth, then sets up policybased routing and the default route of this link, and the priority of the default route every time set up is higher than the priority of the default route existed；
Link-recovery module 30, the link interrupted is when recovering, carry out periodic maintenance, if periodic maintenance failure, routing module control 20 delete the policybased routing of link, default route and dns address, standby link comes into force automatically, link-recovery periodically sends Address requests to server, until can be used simultaneously.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structure change made under the enlightenment of the present invention, and every have same or like technical scheme with the present invention, each falls within protection scope of the present invention.
Claims (8)
1. the method that a cpe device realizes double; two WAN mouth online, it is characterised in that comprise the following steps:
Step 101: lower terminal of hanging sends online request to cpe device, and cpe device sends Address requests to server；
Step 102: judge that whether Address requests is successful, if Address requests success, then performs step 103, otherwise, performs step 101；
Step 103: judge whether this connect WAN mouth of lower extension terminal has bound link, if it is, perform step 104, otherwise, performs step 106；
Step 104: judge whether this link has built up policybased routing, if it is, perform step 105, otherwise, performs step 106；
Step 105: walk policybased routing, is resolved by the dns server of link, goes to step 107；
Step 106: walk default route, is resolved by the dns server given tacit consent to, goes to step 107；
Step 107: online request arrives network.
2. the method that cpe device as claimed in claim 1 realizes double; two WAN mouth online, it is characterized in that, described link includes the first link and the second link, and described WAN mouth includes a WAN mouth and the 2nd WAN mouth, and described lower extension terminal includes first time hanging terminal and hanging terminal second time；
Hanging terminal described first time for hanging under a described WAN mouth of described first link bundling, described first link is primary link, and described second link is standby link；
Hanging terminal described second time for hanging under the described 2nd WAN mouth of described second link bundling, described second link is primary link, and described first link is standby link.
3. the method that cpe device as claimed in claim 2 realizes double; two WAN mouth online, it is characterized in that, when described first link down, described second link comes into force automatically, and delete the policybased routing of described first link, default route and dns address, if described first link interrupted can be used, then described first link can recover voluntarily, adding the policybased routing of described first link, default route and dns address, line period of going forward side by side is safeguarded.
4. the method that cpe device as claimed in claim 1 realizes double; two WAN mouth online, it is characterized in that, binding the described lower extension terminal hung under the described WAN mouth of described link and walk policybased routing, the described lower extension terminal hung under the described WAN mouth of unbound described link walks the default route that priority is the highest.
5. a cpe device realizes the system that double; two WAN mouth is surfed the Net, it is characterised in that include DNS forwarding module, routing module control and link-recovery module, wherein,
DNS forwarding module, if the connect WAN mouth of lower extension terminal has bound link, the dns server that request message is transmitted to binding link when dns resolution resolves；If lower extension terminal the connect WAN unbound link of mouth, then take the dns server setting up link for the last time and default DNS server resolves；When binding the link down of WAN mouth, delete the dns server of this link, automatically search default DNS server；
Routing module control, link, when setting up, if this link bundling WAN mouth, then sets up policybased routing and the default route of this link, and the priority of the default route every time set up is higher than the priority of the default route existed；
Link-recovery module, the link interrupted is when recovering, carry out periodic maintenance, if periodic maintenance failure, described routing module control delete the policybased routing of link, default route and dns address, standby link comes into force automatically, link-recovery periodically sends Address requests to server, until can be used simultaneously.
6. cpe device as claimed in claim 5 realizes the system of double; two WAN mouth online, it is characterized in that, described link includes the first link and the second link, and described WAN mouth includes a WAN mouth and the 2nd WAN mouth, and described lower extension terminal includes first time hanging terminal and hanging terminal second time；
Hanging terminal described first time for hanging under a described WAN mouth of described first link bundling, described first link is primary link, and described second link is standby link；
Hanging terminal described second time for hanging under the described 2nd WAN mouth of described second link bundling, described second link is primary link, and described first link is standby link.
7. cpe device as claimed in claim 6 realizes the system of double; two WAN mouth online, it is characterized in that, also include processing module, when described first link down, described second link comes into force automatically, and deletes the policybased routing of described first link, default route and dns address, if described first link interrupted can be used, then described first link can recover voluntarily, adds the policybased routing of described first link, default route and dns address, and line period of going forward side by side is safeguarded.
8. cpe device as claimed in claim 5 realizes the system of double; two WAN mouth online, it is characterized in that, binding the described lower extension terminal hung under the described WAN mouth of described link and walk policybased routing, the described lower extension terminal hung under the described WAN mouth of unbound described link walks the default route that priority is the highest.
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