[c-nsp] Not working tLDP or PW between me3600 15.3(3)S1a

[Adam Vitkovsky]

Hi folks,

Just to follow up on this with our latest findings. 

The new HW revision boxes (port numbers marked with up and down arrows) 
are sending targeted LDP hellos with IP TTL of 0, the outer label has TTL
255. 
So the PHP nodes will drop the hellos instead of forwarding them to VC head
end/tail end. 

This behavior seems to be triggered by something, we have yet to identify
what that trigger is. 
Reproducible after reloads and also on 15.3(3)S1. 

So another below the belt punch (we had older HW revision boxes in the lab
unfortunately). 

adam
-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Adam
Vitkovsky
Sent: Tuesday, December 17, 2013 4:28 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Not working tLDP or PW between me3600 15.3(3)S1a

Hi folks,

Anyone running targeted LDP session or p2p PW forthat matter between two not
directly connected me3600s please? 

I have a weird issue on 15.3(3)S1a - four boxes in a square topology. 
The directly connected switches form the tLDP adjacencies and PWs just fine,
however the non-directly connected boxes do not. 
They don't even try to, according to "debug mpls ldp messages
sent/recceived" 
The tLDP sessions are formed on loopbacks and loopbacks are reachable both
via ip and mpls. 


adam


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