L2 MPLS configuration documentaion & troubleshooting

[moorthy1977]

Dear Friend,

can any one please provide me L2 MPLS documentaion & troubleshooting documentation.

regards,

[Harold Ritter]

You could start with the information contained on this web site:

http://www.cisco.com/warp/public/732/Tech/mpls/l2vpns/

AToM Documentation:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120limit/120s/120s23/atom/index.htm

Let me know if I answered your question,

[moorthy1977]

Thnaks for u r reply.But i need more configuration example.I had alreay read the MPLS but i dont know about conf. I need to implement L2 EoMPLS mpls on 7609 router.

Regards,

[Harold Ritter · Accepted solution]

Here's a document that is more oriented towards EoMPLS configuration.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1612/products_feature_guide09186a00800e9571.html#1113754

Let me know if you have any specific questions about EoMPLS configuration.

[moorthy1977]

Thanks for helping with good example.One more request to provide triubleshooting example.

Regards,

[Harold Ritter]

I haven't come across any document that focuses on EoMPLS troubleshooting. Here's a couple of things that need to be verified when troubleshooting a EoMPLS configuration.

1- Make sure that there is an end to end LSP between the ingress and egress PE. This can be done using the "trace mpls" command.

2- Verify that a directed LDP session is up and running between the ingress and egress PE. This can be done with the following command:

R2#sh mpls ldp nei 4.4.4.4

Peer LDP Ident: 4.4.4.4:0; Local LDP Ident 2.2.2.2:0

TCP connection: 4.4.4.4.19675 - 2.2.2.2.646

State: Oper; Msgs sent/rcvd: 17/16; Downstream

Up time: 00:03:29

LDP discovery sources:

Ethernet1/0, Src IP addr: 192.168.224.4

Serial2/0, Src IP addr: 192.168.24.4

Targeted Hello 2.2.2.2 -> 4.4.4.4, active, passive

Addresses bound to peer LDP Ident:

192.168.224.4 4.4.4.4 192.168.34.4 192.168.24.4

r2#

Please note the following output line stating that the directed LDP session is active:

Targeted Hello 2.2.2.2 -> 4.4.4.4, active,

3- Make sure that the MTU on the interface to the CE is the same on both the ingress and egress PE. A discrepency would prevent the VC to come up.

4- Verify that the interface to the CE is up/up on both PEs.

Let me know if you have any specific questions on EoMPLS troubleshooting,

[gaurav_saxena]

Hi Hritter,

I have a question here. These troubleshooting steps are fine for Port mode EoMPLS.What would be the troubleshooting steps in VLAN Mode Scenarios using specific VLAN tags (other then those 4 steps). I wanted to know how can we use VLAN tags for troubleshooting EoMPLS.

Cheers

Gaurav