Re: MPLS Route Targets

Cool.
Just one question, as I have never labbed nor have experience in
inter-AS mpls vpns: You say "in order to see" the route targets,
but my impression of the command (no bgp default route-target filter)
is that it actually filters, so for a reflector or a vpnv4 eBGP peer,
you would actually need it in order to exchange such routes
(those with no RTs used by local VRFs). Is that correct ?

Thanks,
-Carlos

Paul Negron @ 20/08/2010 21:52 -0300 dixit:
> All,
>
> When configuring Inter-AS VPN, The P routers ARE participating in BGP under
> the VPNv4 Address-Family and will use the inner label to switch from carrier
> to carrier. The default route target must be lifted in order to see the
> route-targets on the P router. The only other way I know of is to configure
> the route-targets on a vrf that is on the P router but not applied to any
> interfaces.
>
> A similar problem would take place when using Confederations.
>
> The command that dumps the information on that P router or ANY router that
> the route-targets are not configured on, is " no bgp default route-target
> filter" under the BGP process. All of the RD information is seen. Even more
> than a router that has the RT's configured.
>
>
> Paul

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net