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Method for updating address resolution protocol table entries and core switch

A core switch and address update technology, applied in data exchange networks, digital transmission systems, electrical components, etc., to solve problems such as the inability to quickly switch backup links for business traffic, the difficulty in switching time, and the inability to meet business needs. , to achieve the effect of fast switching, small switching delay and fast update

Active Publication Date: 2013-06-26
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the network is in a network with relatively high interrupt delay requirements, such as a switching time of less than 50ms, it is difficult to meet the switching time requirements
It can be seen that in the downlink direction, business traffic cannot be quickly switched to the backup link, which cannot meet business requirements.

Method used

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  • Method for updating address resolution protocol table entries and core switch
  • Method for updating address resolution protocol table entries and core switch
  • Method for updating address resolution protocol table entries and core switch

Examples

Experimental program
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Embodiment Construction

[0020] In the technical solution of the present invention, in order to quickly switch the flow to the backup link when a failure occurs, the main core switch determines that the main link between the access switch and the access switch fails, and the outbound port The port corresponding to the main link is updated to be the port connected to the backup core switch; when the backup core switch determines that the main link fails, the outgoing port in the ARP entry of itself is updated to be the port connected to the main core switch to the port connected to the main core switch. port connected to the switch.

[0021] As can be seen from the technical solution described above, in order to quickly switch the service flow to the backup link, the present invention does not delete the ARP entries on the main and backup core switches when the main link fails, but directly updates the ARP entries to update. In this way, since the learning process of the ARP entry is omitted, the serv...

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PUM

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Abstract

The invention discloses a method for updating address resolution protocol (ARP) table entries and a core switch. The ARP table entries are updated rather than deleted so as to solve the problems of failures of a main link and ARP table entry output port updating in subsequent failure recovery. By the technical scheme provided by the invention, an ARP table entry learning process is avoided, so the ARP table entries can be rapidly updated to realize the rapid switching of traffic and meet the requirement of switching delay shorter than 50ms on switching performance.

Description

technical field [0001] The present invention relates to Address Resolution Protocol (ARP, Address Resolution Protocol) technology, in particular to a method for updating ARP entries and a core switch. Background technique [0002] see figure 1 , figure 1 It is a structural diagram of a typical access system in the prior art. exist figure 1 Among them, the core switch 1, the core switch 2, the access switch A, the access switch B and the access switch C are in a two-layer network, by running the link backup protocol and the Virtual Router Redundancy Protocol (VRRP, Virtual Router Redundancy Protocol ), realize three-layer forwarding, and provide users with access to the Internet. [0003] Wherein, the link backup protocol running on access switch A, access switch B and access switch C can be Smart-Link or Multiple Spanning Tree Protocol (MSTP, Multiple Spanning Tree Protocol) or Fast Ring Protection Protocol (RRPP, Rapid Ring Protection Protocol). The access switch is c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/713H04L45/586H04L45/16
Inventor 杨碧辉
Owner NEW H3C TECH CO LTD