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Synchronizing method of address resolution protocols and device

A technology of address resolution protocol and redundancy protocol, which is applied in the direction of data exchange through path configuration, digital transmission system, electrical components, etc., can solve the problems of heavy operation workload and high equipment cost, and reduce operation workload and equipment cost effect

Inactive Publication Date: 2012-08-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the synchronization method of the ARP table in the related art leads to relatively high equipment costs or relatively large operating workload, the present invention provides a method and device for synchronizing the address resolution protocol table to at least solve this problem

Method used

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  • Synchronizing method of address resolution protocols and device
  • Synchronizing method of address resolution protocols and device
  • Synchronizing method of address resolution protocols and device

Examples

Experimental program
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Embodiment 1

[0046] This embodiment provides an ARP synchronization method. The method includes: configuring a dedicated L2VPN channel, called an ARP listening channel, between layer 2 and 3 VPN bridge point devices configured with VRRP, and configuring a dedicated L2VPN channel on the two bridge nodes. , bind the Layer 3 bridging virtual interface of the L3VPN configured with VPPR to the local Layer 2 virtual interface of the ARP listening channel. At the same time, copy a copy to the Layer 2 forwarding instance where the ARP monitoring channel is located, and send it to the VRRP standby device through the ARP monitoring channel. On the VRRP standby device, after receiving the sent ARP packet, the local interface of the ARP monitoring channel copies A copy is sent to the Layer 3 bridging virtual interface of the VRRP standby device, and the Layer 3 bridging virtual interface is loaded into the local ARP table according to the normal ARP learning process, thus completing the synchronization...

Embodiment 2

[0049] This embodiment provides an ARP synchronization device, which includes the following modules: an ARP listening port configuration module 42 and an ARP packet reset module 44. The above structures are described in detail below.

[0050] The ARP listening port configuration module 42 is mainly used on the Layer 2 and Layer 3 VPN bridging nodes to bind the Layer 3 instance virtual interface of the Layer 2 and 3 VPN bridging with the Layer 2 virtual interface of the Layer 2 forwarding instance where the listening channel is located.

[0051] The ARP copy module 44 is used for, on the VRRP master node, when the Layer 2 and Layer 3 VPN bridges receive the ARP packet on the Layer 3 virtual interface, when loading the packet into the local ARP, copy a copy to the Layer 2 of the bound listening channel. Virtual interface: On the VRRP standby node, when the Layer 2 virtual interface where the listening channel is located receives a packet, it copies a copy to the bound Layer 2 and...

Embodiment 3

[0053] This embodiment provides a method for ARP synchronization between two computers by performing ARP packet replication through a listening channel, and the method includes the following steps S202 to S208.

[0054] Step S202: According to the network topology, determine two bridging nodes configured with Layer 2 and 3 VPN bridging and configured as VRRP master-standby relationships, and configure an L2VPN listening channel between the two nodes;

[0055] Step S204: On the two bridging nodes, configure the binding relationship between the Layer 3 virtual interface of the Layer 2 and Layer 3 VPN bridge and the local Layer 2 virtual interface of the listening channel.

[0056] Step S206: On the master node of VRRP, when the Layer 3 virtual interface of the Layer 2 and Layer 3 VPN bridges receives the ARP request, while loading it into the local ARP table, a copy is copied to the Layer 2 virtual interface of the bound listening channel, And sent out by the monitoring channel....

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Abstract

The invention discloses a synchronizing method of address resolution protocols and a device. The method comprises that address resolution protocol (ARP) messages which are received by primary devices at a second layer virtual private network (VPN) bridging point and a third layer VPN bridging point are transmitted through a monitoring channel to standby devices at the second layer VPN bridging point and the third layer VPN bridging point which are in a virtual router redundancy protocol (VRRP) standby relationship with primary devices; and the ARP messages are uploaded into local ARPs of standby devices to achieve synchronization of ARPs. According to the synchronizing method of address resolution protocols and the device, the cost for synchronization of ARPs is reduced.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a method and device for synchronizing an address resolution protocol (Address Resolution Protocol, ARP for short) table. Background technique [0002] With the development of technologies such as Long Term Evolution (LTE), in the mobile backhaul network, a three-layer Virtual Private Network (VPN) technology is introduced at the , you can continue to use the Layer 2 Virtual Private Network (L2VPN) technology. In order to ensure the full-process Multi-Protocol Label Switching (MPLS) label forwarding, you need to enable it on the aggregation layer device. Layer 2 and 3 VPN bridging function, and at the same time, in order to improve the reliability of the network, it is necessary to use the Virtual Router Redundancy Protocol (VRRP) function on the two bridging point devices. However, after VRRP switching occurs, because there is no ARP table on the VRRP standby node, ARP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/46H04L12/56H04L45/586
Inventor 周继华曲延锋韩俊杰
Owner ZTE CORP
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