The MPLS WG Archive

[Stephen Su <SSu@oni.com>]

Title: RE: Question about Label Distribution Peers

Zaheer, first of all, thanks for the example.
OSPF allows import of routes from other protocols
such as RIP, then why do we need condition 2. It
seems condition 1 already covers this case.

      1. R1's route to X is a route which it learned about via a
         particular instance of a particular IGP, and R2 is a neighbor
         of R1 in that instance of that IGP

-Stephen

-----Original Message-----
From: Zaheer Aziz [mailto:zaziz@cisco.com]
Sent: Wednesday, October 04, 2000 5:02 PM
To: Stephen Su; mpls@UU.NET
Subject: Re: Question about Label Distribution Peers

At 04:42 PM 10/04/2000 -0700, Stephen Su wrote:

>Hi all,

>I have a question in regarding to section 4.1.2.1 of
>"draft-ietf-mpls-arch-07.txt". Could someone explain (perhaps
>with an example) the following?
>
>      2. R1's route to X is a route which it learned about by some
>         instance of routing algorithm A1, and that route is
>         redistributed into an instance of routing algorithm A2, and R2
>         is a neighbor of R1 in that instance of A2

for example,

X---RIP---R1--OSPF-----R2

R1 learns X via RIP and R1 redistribute that via OSPF to R2. R1 are R2 are OSPF neighbors.

A1 is RIP
A2 is OSPF in my example

Zaheer

>Thanks,
>-Stephen