Re: MPLS Route Targets

Like said before this command saves and kills - use with caution.

Kambiz Agahian
CCIE Instructor/Consultant
M.Eng Telecom, CCIE# 25341, CCSI# 33326, MCSE, MCSA

On Sat, Aug 21, 2010 at 10:26 AM, Shaughn Smith <maniac.smg_at_gmail.com>wrote:

> That is correct. If no local VRF's have those RT's you would need to use
> the no bgp default route-target filter command.
>
> CCIE # 23962 (SP)
>
> Sent from my iPhone 3GS
>
> On 21 Aug 2010, at 1:02 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:
>
> > 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
> >
> >
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Received on Sat Aug 21 2010 - 11:03:59 ART