From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Dec 06 2006 - 22:06:01 ART
Whenever you do not want traffic to a destination label switched
you would not send a label. It ultimately depends on what prefixes are
being exchanged in IPv4 unicast between the neighbors, and based on your
design which of these you want label switching to occur for. You can
accomplish this with a route-map that matches prefixes and says "set
mpls label" or does not.
HTH,
Brian McGahan, CCIE #8593 (R&S/SP)
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> jay buss
> Sent: Wednesday, December 06, 2006 3:52 PM
> To: ccielab@groupstudy.com
> Subject: Intra-AS mpls vpn "send-label"
>
> Hi,
>
> I noticed that it is possible to filter prefixes to send or not to
send
> label
> information with a bgp update.
> When I practice my labs I always put the send-label bgp command on bgp
> neighbors, where no mpls is running in between.
> This means that for all prefixes also a label is send via bgp.
> When would you like to filter on specific prefixes if a label must be
> sent,
> does somebody have an example for me?
>
> My other question is:
>
> CE--VRFA)-PE---Provider1---Provider2--PE---(VRFA--CE
>
> Sometimes I receive on both CE's all vpn prefixes vice versa, but
traffic
> cannot forward between them.
> Let's say that I've applied the send-label command on the correct
places,
> what
> are other command pitfalls why both CE still cannot forward traffic?
>
> Thanks for the help!
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