[c-nsp] MPLS TE to use 2 default routes?

Mark Tinka mtinka at globaltransit.net
Fri Oct 21 06:26:24 EDT 2011


On Friday, October 21, 2011 05:51:08 PM Phil Mayers wrote:

> Is it at all sensible to build 2x MPLS TE tunnels from
> R4->R2 and R4->R1, and use these to make the eBGP routes
> multipath candidates? Am I setting myself up for pain?

Yes, you can do that.

Just make sure the R2-R4 link can handle traffic for:

	o R2-to-R4.
	o R2-to-R5.
	o R2-to-R3 (backup path).
	o R2-to-R1 (backup path).

Ignore the backup paths if you're going to build strict 
paths for the MPLS-TE LSP's (recommended), as the LSP 
wouldn't form across them anyway.

We do this within our core network to support load balancing 
for non-equal-cost distances (towards peers or customers), 
even though bandwidth within the core is the same; just like 
your case.

Cheers,

Mark.
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