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Method and device for network device address notification

A network device, address notification technology, applied in the field of communications, can solve the problem of unable to forward packets normally, the host cannot sense the change or failure of the interface address, etc.

Active Publication Date: 2019-09-17
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a method and device for network device address notification to solve the current problem that when the interface address of the proxy network device changes or fails, the host cannot perceive the change or failure of the interface address, so that the message cannot be forwarded normally

Method used

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  • Method and device for network device address notification
  • Method and device for network device address notification
  • Method and device for network device address notification

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Embodiment Construction

[0019] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] see figure 1 A schematic diagram of the networking environment of IRDP in the prior art is shown, specifically including: hosts (host A and host B), internal switching network, network device A (Router A), network device B (Router B) and the external network ( External network 1 and external network 2), wherein, network device A supports the IRDP function, and network device B does not support the IRDP function, so network device A is required to act as a proxy to advertise the interface address of network device B.

[0021] The inventor of the present application innovatively proposes that network device A sends the first RA message carrying the interface address of network device B, so that when...

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Abstract

The present application provides a method and device for notifying a network device address, which is applied to a first network device, and the first network device is used to notify a second network device of the interface address of the second network device, and the method includes : sending a first route advertisement message RA message carrying the interface address of the second network device, so that the second network device determines that the interface address is a valid interface after receiving the first RA message address, sending to the first network device an acknowledgment message indicating that the interface address is valid; if the acknowledgment message is not received within the preset period, then the priority corresponding to the interface address is set to the lowest , and send a second RA message, the second RA message is used to notify that the interface address is unavailable, so that when the interface address of the proxy network device changes or fails, the host cannot perceive the interface address change or Invalid, so that the packet cannot be forwarded normally.

Description

technical field [0001] The present application relates to communication technology, in particular to a method and device for network device address notification. Background technique [0002] IRDP (ICMP Router Discovery Protocol, Router Discovery Protocol) is an extension of ICMP (Internet Control Message Protocol, Internet Control Message Protocol), which enables each router to periodically transmit an IRDP notification message from each multicast interface to notify interface address. After receiving the IRDP notification message, the host discovers the addresses of adjacent network devices, so that it can dynamically discover the interface address of the default network device. [0003] see figure 1 , which shows a schematic diagram of the IRDP networking environment in the prior art, the networking environment includes: a host, a network device A and a network device B, wherein the network device A supports the IRDP function, and the network device B does not support t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/751H04L12/24H04L12/937H04L12/26H04L29/08H04L12/935H04L45/02H04L49/111
CPCH04L41/12H04L43/0805H04L45/02H04L49/253H04L49/30H04L67/141
Inventor 夏添
Owner NEW H3C TECH CO LTD