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

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 :)
>
>
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Received on Sat Dec 04 2010 - 13:46:09 ART