[c-nsp] MPLS TE tunnel output drops

Jon Lewis jlewis at lewis.org
Mon Jul 17 09:07:36 EDT 2006


I don't think that's the issue.  All links involved have mtu 1500 and 
tag-switching mtu 1520, and have been passing MPLS VPN traffic for years.

On Mon, 17 Jul 2006, Alex wrote:

> I've seen this symptom before when link MTU is smaller than MPLS packet size.
> HTH
> Cheers
> Alex
>
>> I'm trying to configure a few new TE tunnels with explict paths and have
>> run into a problem with one.  For all the tunnels involved, I'm using
>> policy routing on other interfaces to set interface TunnelX and force
>> traffic into the appropriate tunnel.  One of the Tunnel interfaces drops
>> any packets routed into it.  How do I find the reason for 100% output
>> drops on a TE tunnel?  sh mpls traffic-eng tunnels says the broken tunnel
>> is up and the explicit path is in use.
>> 
>> Other than the paths configured (and IOS versions), there's really no
>> difference between the working tunnels and the non-working tunnel.
>> 
>> ----------------------------------------------------------------------
>>  Jon Lewis                   |  I route
>>  Senior Network Engineer     |  therefore you are
>>  Atlantic Net                |
>

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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