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

[Waris Sagheer (waris)]

Adam,
Is this ME3600X-24CX?

Best Regards,

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Waris Sagheer
Technical Marketing Manager
Service Provider Access Group (SPAG)
waris at cisco.com<mailto:waris at cisco.com>
Phone: +1 408 853 6682
Mobile: +1 408 835 1389

CCIE - 19901


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From: adam vitkovsky <adam.vitkovsky at swan.sk<mailto:adam.vitkovsky at swan.sk>>
Date: Friday, December 20, 2013 2:07 AM
To: "cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>" <cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>>
Subject: Re: [c-nsp] Not working tLDP or PW between me3600 15.3(3)S1a

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<mailto: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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