Re: How to COMPLETE the END - TO - END LSP btw non-directly

You need a send-label between R9---R6 and R6--- R2
and do not forget to set and match the mpls label where ever necessary

Regards;
Prakash Kalsaria
http://prakashkalsaria.wordpress.com

On Sun, Dec 5, 2010 at 11:42 AM, vivek vidhate <vidhatevivek_at_gmail.com>wrote:

> Hi Asfer,
>
> Pls paste the tracroute for respective sites and ping responses along with
> related configurations if possible.
>
> So that we can troubleshoot.
>
>
> On Sun, Dec 5, 2010 at 10:51 AM, Asfer Shah <s_asfar_at_hotmail.com> wrote:
>
> > Thanks Scott for your reply !
> > well I have done that at the first place and the problem is that the BGP
> > send-label is working fine between the R6 and R9 , where R6 is generating
> > the
> > Labels for the prefixes, its the other side making troubles for God knows
> > what
> > reason R2 and R6 are not building up the LSP between them !!
> >
> > I have tried every possible thing and the LSP will not be UP !!!
> > IS this a CISCO BUG ?
> > I might be sounding wrong but with so many efforts i seem to lost it !!
> >
> >
> >
> > > From: tscott_at_ipexpert.com
> > > To: s_asfar_at_hotmail.com; ccielab_at_groupstudy.com; pearlgaurav_at_gmail.com
> > > Subject: RE: How to COMPLETE the END - TO - END LSP btw non-directly
> > conncedted ASBR's in InterAS-VPN??? PLEASE Suggest ???
> > > Date: Sat, 4 Dec 2010 13:46:09 -0500
> > >
> > > On R6 and R9 you need to make sure you do "no bgp default route-target
> > > filter"
> > >
> > >
> > >
> > > For the recursive problem you need to make sure you are not announcing
> > your
> > > tunnel sources thru the tunnel. That is basic recursive lookup problem
> > >
> > >
> > >
> > > Regards,
> > >
> > >
> > >
> > > Tyson Scott - CCIE #13513 R&S, Security, and SP
> > >
> > > Managing Partner / Sr. Instructor - IPexpert, Inc.
> > >
> > > Mailto: tscott_at_ipexpert.com
> > >
> > >
> > >
> > >
> > >
> > > From: Asfer Shah [mailto:s_asfar_at_hotmail.com]
> > > Sent: Saturday, December 04, 2010 12:18 AM
> > > To: ccielab_at_groupstudy.com; pearlgaurav_at_gmail.com; tscott_at_ipexpert.com
> > > Subject: RE: How to COMPLETE the END - TO - END LSP btw non-directly
> > > conncedted ASBR's in InterAS-VPN??? PLEASE Suggest ???
> > >
> > >
> > >
> > >
> > >
> > > > Dear All,
> > > > I have tried my luck but I am forced to drop the below scnerio in
> whcih
> > we
> > > > have inter-as VPN but the ASBR's are not directly connected ?
> > > > Can any one help , I am having my brains lost with this scenerio ?
> > > >
> > > > R8---------R9-----------------R6--------------------R2
> > > > | |
> > > |
> > > > | |
> > > |
> > > > | |
> > > |
> > > > | |
> > > |
> > > > R4 R5 R3
> > > >
> > > > R8 and R9 are both in same AS 789 and are Mp-BGP neighbors.
> > > > R8 and R4 are PE-CE in vrf ABC-1 & R9 and R5 as PE-CE as ABC-2
> > > > R6 is in AS66 and its ipv4 ebgp peered with R9 and R2.
> > > >
> > > > R4 and R5 can reach each other routes since the LSP is complete.
> > > >
> > > > We have another AS22 on R2 with R3 as in vrf ABC-3.
> > > > R2 is MP-BGP Vpnv4 peered with R8. R3 can see the routes in its
> routing
> > > table
> > > > for both the cites ABC-1 and ABC-2 from R4 and R5 vice versa.
> > > > But when tried to ping , there is a failure because of the incomplete
> > LSP.
> > > > The problem is to complete the LSP between the R2 and its Vpnv4 ebgp
> > peer
> > > R8.
> > > >
> > > > *I tried runnin LDP between R6-R9 and R6-R2 but no use since there is
> > no
> > > > IGP btw R9/R6/R2 so that LDP cannot generate the labels for the
> > end-to-end
> > > > LSP
> > > >
> > > > *I tried running BGP labels by mentioning the BGP send-label to the
> > ipv4
> > > > ebgp neibors R6-R2 and R6-R9 but the EBGP VPNv4 peering btw R2 & R8
> > > break
> > > > when I do this ?
> > > >
> > > >* I even tried configuring GRE Tunnel between R2 and R8 and ran MPLS
> on
> > it
> > > , but the tunnel comes up and then goes down after 10 secs, message
> comes
> > > saying
> > > > tunnel turned down because o recursive lookup.
> > >
> > > >
> > > > Waiting for the experts FEEDBACK :)
> > > >
> > > >
> > > > Blogs and organic groups at http://www.ccie.net
> > > >
> > > >
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> >
> >
> >
> >
> >
> >
>
>
> --
> Thanks & Regards,
>
> Vivek Vidhate.
>
>
> Blogs and organic groups at http://www.ccie.net
>
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Received on Sun Dec 05 2010 - 11:47:29 ART