Subject: (Reply) question on mpls

From: [email-masked]
Date: Wed, 18 Oct 2000 23:08:55 +0900

Hi murali,

When ur  FEC is indirectly learnt by ur routing protocol then ur LSR becomes Ingress and it will try to estalish an LSP with the egress(LER for that FEC) of the FEC
When the FEC is learnt dicectly then UR LSR becomes the egress and  ....

take the senario ;;;;      R1------R2------R3

when R2 receives a Labelequest from R1, then R2 takes R1 as Upstream peer and R3 as DownSp.....and there will be an LSP from R1 to R3
If R2 receives LblReq from R3....R3 will become upstream in this case (for an LSP from R3 to R1)...and R1 will be downstream.

Hope it will help u.

Seenu

>Hi, 
>     i want to know how to implement in identifying an  LSR  as upstrem LSR or downstream LSR 
>
>thanks in advance 
>murali krishna P.