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New Member

MPLS-VPN does not work , pls help !

I set up a simple LAB for MPLS VRF

the diagram is CE-PE1-P-PE2-CE .

The configurations of all 3 routers are in the attached , I also did some show cmd output . I tried to ping test each pair of vrf ip , from 1 site to other but got time out. Could you pls verify my config and figure out what I missed ?

Thanks

Tri

1 ACCEPTED SOLUTION

Accepted Solutions

Re: MPLS-VPN does not work , pls help !

Hi,

have a look at this:

sh tag-switching tdp discovery

Local TDP Identifier:

2.2.2.2:0

Discovery Sources:

Interfaces:

FastEthernet0/0 (tdp): xmit/recv

TDP Id: 10.10.10.1:0; no route

The info "no route" tells that TDP/LDP is not operational. Thus VPN connectivity can not exist.

Make sure the proper IP address is used as TDP/LDP ID and is present in the routing table.

Example on every PE/P:

mpls ldp router-id Loopback0 force

if Loopback0 can be reached through IP routing (test with extended ping Loop to Loop).

Check label switching in your MPLS core with traceroute to your BGP next-hop addresses.

Check the existance of a TDP/LDP session with "show mpls ldp neighbor".

Hope this helps! Please rate all posts.

Regards, Martin

2 REPLIES

Re: MPLS-VPN does not work , pls help !

Hi,

have a look at this:

sh tag-switching tdp discovery

Local TDP Identifier:

2.2.2.2:0

Discovery Sources:

Interfaces:

FastEthernet0/0 (tdp): xmit/recv

TDP Id: 10.10.10.1:0; no route

The info "no route" tells that TDP/LDP is not operational. Thus VPN connectivity can not exist.

Make sure the proper IP address is used as TDP/LDP ID and is present in the routing table.

Example on every PE/P:

mpls ldp router-id Loopback0 force

if Loopback0 can be reached through IP routing (test with extended ping Loop to Loop).

Check label switching in your MPLS core with traceroute to your BGP next-hop addresses.

Check the existance of a TDP/LDP session with "show mpls ldp neighbor".

Hope this helps! Please rate all posts.

Regards, Martin

New Member

Re: MPLS-VPN does not work , pls help !

OK, I got it . Now it's working . Thanks a lot for you great help !

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