[185839] in North American Network Operators' Group
EoMPLS vlan rewrite between brands; possibly new bug in Cisco IOS 15
daemon@ATHENA.MIT.EDU (Jonas Bjork)
Sat Nov 14 07:48:20 2015
X-Original-To: nanog@nanog.org
From: Jonas Bjork <mr.jonas.bjork@me.com>
Date: Sat, 14 Nov 2015 13:48:14 +0100
To: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Hi, I am using a couple of AToM/EoMPLS tunnels in order to carry =
customer voice and data traffic across our IP/MPLS core, and it is =
currently working just fine. The first side consists of a Cisco 7600 =
router (rsp) and the other one is an HP A5500-HI routing switch with =
full LER/E-LSR capability. At the HP site, the tunnels are facing the =
access ports towards our premium end-customers; and on the Cisco PE I =
terminate the tunnels on one of the 2x10GE portchannel backbone links. =
There is vlan X on the HP side and vlan Y on the Cisco side - vlan =
rewrite is working perfectly - as long as I use IOS 12.
After upgrading the Cisco router software to IOS 15 the tunnels won't =
come up. sh mpls l2 vc Y d says:
...
Last error: Imposition VLAN rewrite capability mismatch with peer
...
I use almost exactly the same Cisco configuration before and after the =
upgrade (only minor changes and nothing related to this) and I havn't =
touched the HP. Apparently they don't talk the same L2PW language. I =
wonder though, why now? We use service instances on the HP switchport as =
endpoint, we initiate the targetted LDP session in addition to the =
pseudowire handshake from a sub interface MPLS crossconnect. There is no =
MTU mismatch; not here - not anywhere.
Anyone heard of this issue or experienced it?
Best regards,
Jonas Bj=C3=B6rk
SNE, Europe/Sweden (hope you guys will help me anyway:)=
