Re: ISIS LSP purge

Hi,

You need to use ignore-lsp-errors command.

Please see below link for details (especially usage guidelines):
https://www.cisco.com/en/US/docs/ios/12_3/isoclns/command/reference/n5ftrcn2.html#wp1019581

Thanks,
Srinivas

On Wed, Sep 15, 2010 at 1:53 AM, selamat pagi <ketimun_at_gmail.com> wrote:

> Studying IS-IS , I came across this statment and wonder now how this could
> be configured
> and why it could make sense to not to purge an invalid LSP ?
>
>
> "...If a router receives an LSP with an incorrect checksum, the router will
> cause a purge of the LSP by setting the remaining lifetime value to 0,
> removing the body and reflooding it. This triggers the LSP originator to
> send a new LSP. This behavior is different from that of OSPF, where only
> the
> originating router can purge an LSP.
> *IS-IS can be configured so that LSPs with incorrect checksums are not
> purged*, but the router that originated the LSP will not know that the LSP
> was not received*. *
> ..."
>
>
> http://www.cisco.com/en/US/products/ps6599/products_white_paper09186a00800a3e6f.shtml
>
> thanks, keti
>
>
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Received on Wed Sep 15 2010 - 16:13:26 ART