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Method, system and device for protecting quick switching

A technology for switching originating and care-of addresses, applied in the field of communication

Inactive Publication Date: 2012-06-27
深圳市智通天下科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the NAR receives the HI message to detect the NCoA address conflict, if the NCoA has an address conflict on the new access link, the NAR cannot regenerate the NCoA according to the CGA method due to the lack of the CGA parameter option for generating the NCoA. Protection fast switching will no longer be possible to proceed

Method used

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  • Method, system and device for protecting quick switching
  • Method, system and device for protecting quick switching
  • Method, system and device for protecting quick switching

Examples

Experimental program
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Embodiment Construction

[0032] A protection fast switching method in Embodiment 1 of the present invention is as follows: figure 1 shown, including the following steps:

[0033] Step 101, MN sends RtSolPr message to PAR.

[0034] In step 102, the PAR sends a PrRtAdv message to the MN.

[0035] Step 103, the MN generates NcoA based on the CGA method. Wherein, the CGA address generation method comprises the following steps:

[0036] 1) Randomly set random values;

[0037] 2) Connect the random number, the 9-byte zero value, the public key of the generated address, and the extension field from left to right, perform SHA-1 hash operation on this connection, and record the left 112-bit value of the operation result as Hash2 ;

[0038] 3) Compare whether the left 16*Sec (Sec is a security parameter, value range is 0-7) bits of Hash2 are all 0, if they are, then continue to step 4), otherwise, add 1 to the random value, and return to step 2);

[0039] 4) Set the conflict count to 0;

[0040]5) Conn...

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PUM

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Abstract

The embodiment of the invention discloses a method, a system and a device for protecting quick switching, wherein the method comprises the following steps that: a newly-accessed router receives a switching initiation message which carries with cryptography generation address parameters for a mobile terminal to generate a new onward transmission address; and the newly-accessed router performs detection of address conflict, and when the existence of the address conflict is detected, the router uses the cryptography generation address parameters to regenerate the onward transmission address and informs the mobile terminal. When an NCoA address has address conflict, NAR reallocate the NCoA address based on a CGA method, so quick switching protected by a SeND protocol is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and equipment for protection fast switching. Background technique [0002] FMIPv6 (Fast Handovers for Mobile IPv6, Mobile IPv6 Fast Handover) extends Mobile IPv6 to reduce handover delay. Among them, the RtSolPr (Router Solicitation for ProxyAdvertisement, router request proxy notification), PrRtAdv (Proxy Router Advertisement, proxy router notification) messages are used to send to the PAR (Previous Access Router, previous access router) before the MN (Mobile Node, mobile node) is about to switch. The router) requests to obtain relevant parameters of the new access link, including the subnet prefix information of the new access link. The MN uses the subnet prefix of the new access link to pre-configure NcoA (New CoA, new care-of address) on the new access link. Subsequently, the MN sends an FBU (Fast Binding Update, fast binding update) message ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L9/30H04L9/32H04L29/06H04W36/00
Inventor 李春强
Owner 深圳市智通天下科技服务有限公司