Re: ISIS Level-11 router + MPLS Labels for Level-2 Loopbacks

label for default route won't help because the entire LSP path must be for _a specific and the same_ route, in this
case PE2's loopback. You can't have an LSP path where routes change along the path, 0/0 from PE1 to P, and
PE2/32 from P to PE2. The path must be PE2/32 from PE1 to P and PE2/32 from P to PE2.

Having said that, PE2's loopback must be in PE1's routing table. What's wrong with L2 to L1 redistribution?

Regards,

Roman Rodichev
6xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider, Wireless)
Instructor, Content Developer
ieMentor Corporation http://www.iementor.com
Y!M: roman7927

> -------Original Message-------
> From: Service Provider <service.providersa_at_gmail.com>
> To: Cisco certification <comserv_at_groupstudy.com>, Cisco certification <ccielab_at_groupstudy.com>
> Subject: ISIS Level-11 router + MPLS Labels for Level-2 Loopbacks
> Sent: Feb 09 '10 15:14
>
> Hi guys
>
> I have a scenario where one of the PE routers is a Level-1 and connects to a
> P router which is L1L2. The problem is that the L1 has a default route from
> the P router, which if fine, but I'm unable to have end-to-end reachability
> between the CE routers. I am only able to achieve this when I redistribute
> Level-2 routes into Level-1 on the P router. I have configure the Level-1
> router to generate the label(s) for the default route but I still don't have
> connectivity between the CE routers.
>
> CE1-------------PE1-----------------------P----------------------PE1--------------------------CE2
> B B B B B B B B B B B B B B B B B B B B L1B B B B B B B B B B B B B B B B B B B B B B L1L2B B B B B B B B B B B B B B B B B B B B L2
>
> Any assistance will be appreciated.
>
> Thank you
> SP
>
>
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Received on Tue Feb 09 2010 - 15:25:05 ART