Re: Missing labels in T-LDP

Marcel,

Are you still having this issue? Can you post configs and topology?

On Wed, Oct 7, 2009 at 6:13 PM, Marcel Lammerse <m.lammerse_at_mac.com> wrote:

> Experts,
>
> here I have a load-balanced path between directly connected ldp speakers :
>
> PE4#sh mpls forwarding-table 192.168.2.0
> Local Outgoing Prefix Bytes Label Outgoing Next Hop
> Label Label or VC or Tunnel Id Switched interface
> 22 25 192.168.2.0/24 0 Fa1/0
> 172.16.14.1
> 23 192.168.2.0/24 0 Fa3/0 172.16.34.3
> PE4#
>
> PE4#sh mpls ldp bindings 192.168.2.0 24 detail
> lib entry: 192.168.2.0/24, rev 22, chkpt: none
> local binding: label: 22 (owner LDP)
> Advertised to:
> 1.1.1.1:0 3.3.3.3:0
> remote binding: lsr: 1.1.1.1:0, label: 25
> remote binding: lsr: 3.3.3.3:0, label: 23
> route information: state: none, table: default,
> next-hop: 172.16.14.1, remote label: 25
> route information: state: none, table: default,
> next-hop: 172.16.34.3, remote label: 23
>
> If I change the ldp sessions to t-ldp, and keep everything else the same,
> the labels seem to disappear and traffic appears to go out untagged :
>
> PE4#sh mpls forwarding-table 192.168.2.0
> Local Outgoing Prefix Bytes Label Outgoing Next Hop
> Label Label or VC or Tunnel Id Switched interface
> 22 No Label 192.168.2.0/24 0 Fa1/0
> 172.16.14.1
> No Label 192.168.2.0/24 0 Fa3/0 172.16.34.3
> PE4#
>
> PE4#sh mpls ldp bindings 192.168.2.0 24 detail
> lib entry: 192.168.2.0/24, rev 22, chkpt: none
> local binding: label: 22 (owner LDP)
> Advertised to:
> 3.3.3.3:0 1.1.1.1:0
> remote binding: lsr: 3.3.3.3:0, label: 23
> remote binding: lsr: 1.1.1.1:0, label: 25
> route information: state: none, table: default,
> next-hop: 172.16.14.1, remote label: <----- no label
> route information: state: none, table: default,
> next-hop: 172.16.34.3, remote label: <----- no label
> PE4#
>
> I'm a bit confused by this. I would have expected the traffic to continue
> to be labeled and the labels to remain the same.
>
> Can anyone shed some light on why this happens?
>
> Thanks,
> Marcel
>
>
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-- 
Bryan Bartik
CCIE #23707 (R&S), CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
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