Re: Missing labels in T-LDP

From: Rick Mur <rmur_at_ipexpert.com>
Date: Sun, 11 Oct 2009 11:48:47 +0200

Indeed, please post configs and a small overview of your setup.
Have you tried clearing the LDP neighbor sessions, doing a 'clear ip
route *' or even reloading all the involved routers?
LDP sometimes has this strange thing of not working 100% in IOS.

--
Regards,
Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
On 11 okt 2009, at 11:34, Iwan Hoogendoorn wrote:
> Hi,
>
> I would also like to see the config and the topo.
>
> Thanks,
>
>
>
> -- 
> Regards,
>
> Iwan Hoogendoorn
> CCIE #13084 (R&S / Security / SP)
> Sr. Support Engineer  IPexpert, Inc.
> URL: http://www.IPexpert.com
>
> On Thu, Oct 8, 2009 at 2:13 AM, 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
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
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>>
>>
>>
>>
>>
>>
>>
>
>
>
> -- 
> Regards,
>
> Iwan Hoogendoorn
> CCIE #13084 (R&S / Security / SP)
> Sr. Support Engineer  IPexpert, Inc.
> URL: http://www.IPexpert.com
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
Received on Sun Oct 11 2009 - 11:48:47 ART

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