Device renumbering method and device

A technology of renumbering and equipment, which is applied in the field of network communication, can solve the problems such as interface address and RA prefix configuration adverse effects, and achieve the effect of reducing adverse effects and improving network security

Active Publication Date: 2015-10-14
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, if a wrong or malicious RR command message is received, it will adversely affect the interface address and RA prefix configuration in the entire network

Method used

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  • Device renumbering method and device
  • Device renumbering method and device
  • Device renumbering method and device

Examples

Experimental program
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Embodiment Construction

[0023] During the router renumbering process, the network management sends an RR command message to the target router through a router to instruct the target router to modify the interface address and / or RA prefix on the device. Among them, the RR command message contains a series of prefix control operations (PCO), each PCO specifies an operation, including MatchPrefix field, MatchLen field, 0 or at least one UsePrefixe (use prefix), UseLen (use length), KeepLen (keep length), Oplength (operation length) and OpCode (operation code). The above fields are described in detail below:

[0024] MatchPrefix and MatchLen: The first MatchLen bits in the MatchPrefix field are used to match the interface address and / or RA prefix on the interface of the target router;

[0025] UsePrefix: that is, to use a prefix, which is used to generate a new interface address or RA prefix;

[0026] Oplength: Used to indicate how many UsePrefixes are included in the PCO. The value of this field is 3+...

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PUM

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Abstract

The invention discloses a device renumbering method and device. The method comprises the steps that first configuration information and second configuration information are acquired; after an RR command message is received, the RR command message and interface information on an interface are matched, wherein the interface information is an interface address and/or an RA prefix; if the match is successful, whether the interface responds to the RR command message is judged according to the first configuration information; and if the interface responds to the RR command message, operation indicated by the RR command message is carried out on the interface information on the interface according to the second configuration information, wherein the operation comprises adding and/or modifying and/or global setting. According to the invention, adverse impact of a false or malicious RR command message on the entire network is reduced to a large extent, and the network safety is greatly improved.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a method and device for renumbering equipment. Background technique [0002] The router renumbering function is implemented by the network management through a router to modify the interface addresses and / or RA (Router Advertisement, Router Advertisement) prefixes of routers in the entire network. Specifically, the router on the uplink sends (Router Renumbering, router renumbering) RR command message to instruct the router on the downlink to modify the interface address and / or RA prefix on the device, and finally achieve the modification of the interface address of the entire network and / or RA prefix purposes. [0003] Taking modifying the RA prefix as an example, the network manager sends an RR command message to the target router through a router; after the target router receives the RR command message, it judges the preceding MatchLen (matching length)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L41/0803
Inventor 吴云
Owner NEW H3C TECH CO LTD
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