Lecture ip 2 BGP + MPLS

Lecture ip 2 BGP + MPLS

by Ali Benabdallah -
Number of replies: 1

Hi,

On the 54th slide, "R2 sets up one LSP to 2.2.2.2 (green LSP) and R5 sets up one LSP to 3.3.3.3 (blue LSP)." however R5 is in AS Z and 3.3.3.3 between AS X and AS Y. Isn't MPLS supposed to work inside an area ? I think it could be a typo otherwise R4 should be the one setting up the green LSP to 2.2.2.2.

Best regards,

Ali

In reply to Ali Benabdallah

Re: Lecture ip 2 BGP + MPLS

by Stéphan Plassart -

Dear Ali,

Apparently there is a typo, you are right, this is LER R6 inside AS x that sets up LSP to 3.3.3.3.
All EBGP routers in AS x setup LSPs to all Next‐Hops of all EBGP routers in AS x.

In this example, we have 2 LERs, R2 (sets up LSP to 2.2.2.2) and R6 (sets up LSP to 3.3.3.3).

Thanks for pointing this out !

Best regards,
Stéphan.