The MPLS-OPS Archive

[Eric Osborne <eosborne@cisco.com>]

> On another subject I've been trying to find information about TE and BGP,
> because all of our peers act as BGP4 AS... is it possible or do I have to do
> BGP to OSPF (In my case) and apply all my TE rules there, if so, how does it
> impact traffic flows coming from the BGP routers?

Remember that BGP propagates exit points from your network, in the
form of next-hops.  So all you need to do to get TE for BGP routes is
to have TE for the next-hops behind which BGP routes reside.

Do *not* redistribute BGP into OSPF.  Bad.  Trust me.

If you want to apply different TE rules to different BGP routes out
the same next-hop, one way to do this is to change the next-hop of the 
BGP routes in question (so have multiple next-hops on the exit-point
router) and do TE to those next-hops.  Obviously this doesn't scale to 
have a different TE tunnel per BGP route, but you get the idea.



eric

> 
> Regards
> 
> Stefan Schneider
> Senior Engineer, Data
> Infrastructure Evolution
> Vodafone Network Pty.
> Phone: 9245-9312
> Mobile: 04 1420-9312 
> 
> 
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