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Method for synchronizing ARP (address resolution protocol) tables between master and slave VRRP (virtual router redundancy protocol) devices and VRRP device

An ARP table and standby device technology, applied in the data field to reduce packet loss time

Active Publication Date: 2012-10-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method and VRRP device for synchronizing the ARP table between the active and standby VRRP devices, so as to overcome the existing ARP table synchronization that requires the access layer device to support ARP dual transmission or requires pure manual static configuration to perform Synchronization flaws

Method used

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  • Method for synchronizing ARP (address resolution protocol) tables between master and slave VRRP (virtual router redundancy protocol) devices and VRRP device
  • Method for synchronizing ARP (address resolution protocol) tables between master and slave VRRP (virtual router redundancy protocol) devices and VRRP device
  • Method for synchronizing ARP (address resolution protocol) tables between master and slave VRRP (virtual router redundancy protocol) devices and VRRP device

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Embodiment Construction

[0046] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0047] A method for synchronizing ARP tables between active and standby VRRP devices, such as figure 1 shown, including:

[0048] Step 10: The VRRP master device encapsulates the Layer 3 instance corresponding to the VRRP protection group or the ARP table in the L3VPN into a message and sends it to the VRRP backup device; the attributes of the master and backup VRRP devices follow the attributes of the VRRP device. change by changing;

[0049] In specific implementation, the process of sending the message may be periodic, such as sending once every one minute. In addition,...

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Abstract

The invention discloses a method for synchronizing address resolution protocol (ARP) tables between master and slave virtual router redundancy protocol (VRRP) devices and a VRRP device. The method comprises the following steps: after ARP tables in three layers of examples or three layers of virtual private networks (L3VPN) corresponding to a VRRP protection group are packaged into a message by the master VRRP device, the message is transmitted to the slave VRRP device; the received message is analyzed by the slave VRRP device, and the carried ARP table is loaded on the ARP table corresponding to the locality. The VRRB device comprises an ARP table message generating module, an ARP table message transmitting module, an ARP table message analyzing module and an ARP table loading module. After adopting the method provided by the invention, the ARP tables between the master and slave VRRP devices are synchronous through the ARP table information message and are supported on the master and slave VRRP devices, and the method has no additional requirement about an access loop device.

Description

technical field [0001] The present invention relates to the field of data, in particular to a method for synchronizing ARP (Address Resolution Protocol, Address Resolution Protocol) table synchronization between active and standby VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) devices and a VRRP device. Background technique [0002] With the development of LTE (Long Term Evolution, Long Term Evolution) and other technologies, Layer 3 VPN (Virtual Private Network, virtual private network) technology is introduced in the aggregation layer of the mobile backhaul network, and L2VPN (two-layer VPN) technology can continue to be used in the access layer. Layer VPN) technology. In order to ensure full MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) label forwarding, it is necessary to enable the second and third layer bridging functions on the aggregation layer device; at the same time, in order to improve the reliability of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
Inventor 周继华钱婕
Owner ZTE CORP
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