Been forever since i looked at cisco, however sounds like vc type mismatch. They used to have it as a platform capability, perhaps SW upgrade changed the default.
to my memory "show mpls l2 transport" should provide enough details. Hope this helps Regards, Jeff > On Nov 14, 2015, at 4:50 AM, Jonas Bjork <[email protected]> wrote: > > 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 Björk > SNE, Europe/Sweden (hope you guys will help me anyway:)

