Re: questions

On Thu, Jan 7, 2010 at 14:19, Robert Elaski <robert.slaski_at_atm.com.pl>wrote:

> Marko Milivojevic pisze:
>
> > Remember, pseudonode ID is non-zero circuit-id. If you are not dealing
> > with a pseudonode, circuit-id is always zero.
> >
> > So... Yup :-)
>
> I am quite convinced that we speak different language but talking about
> the same thing :-) However the original question was about LSPs, and in
> LSPs there are no NETs and no Circuit-IDs. Just Sys-ID, Pseudonode-ID
> and Frag-ID.
>
> To make the long story short:
>
> IS-IS Level-2 Link State Database:
> LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
> r2-isis.00-00 0x0000004D 0x0C2E 808 0/0/0
> r3-isis.00-00 * 0x0000004C 0xBB48 1028 0/0/0
> r3-isis.03-00 * 0x0000003E 0x1349 942 0/0/0
>
> The 2nd LSP is a non-pseudonode LSP, and the 3rd one is a pseudonode LSP
> generated by DIS, both sourced by the same node of Sys-ID "r3-isis".

Oh, I was about to write the same thing! Technically speaking, you were
*more* right than I was, since I did wrote "look at 00 at the end", which is
of course not correct if you take a look into the database. However, if you
take a look into, for example, "show isis nei":

R2#sh isis ne

System Id Type Interface IP Address State Holdtime Circuit Id
R5 L1 Fa1/0 52.52.52.5 UP 7 R5.01

R5 L2 Fa1/0 52.52.52.5 UP 9 R5.01

R5 L1L2 Se0/2/0 25.25.25.5 UP 27 00

"R5.01" in the output is pseudonode. My answer was still correct in a sense
that non-zero cct. id is appended to system ID - I just missed that there is
something added after it in the LSP, as well :-).

Good thread. Me likes.

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Marko Milivojevic - CCIE #18427
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