Vlan Trunking between a 7206, an UBR7246 and a 2950

[emmanuel.rety]

I want to transport two Vlan originated from my 7206 on a single FE, through the 2950, up to the GE interface of my UBr.

I configured my two routers with encaps dot1q, an vlan id 100 & 101.

I created two trunk port on the 2950, allowing the transport of these 2 VlANs (which were already configured).

I also did configure an ip interface on this 2950, belonging on vlan 100.

My pb is:

When i try to ping from my Ubr the 2950, it's working; but not from my 7206.

When i debug "ip packets" on the 7206, i can find the message "encapsulation failed" ; however both my 7206 and UBr are configured with the same parameters...

Does anyone have an idea ?

[Kevin Dorrell]

Does your 802.1Q trunk between the 7206 and the 2950 have the same native VLAN at both ends. Could you please post a "show cdp neighbor detail" from both ends of that trunk?

Kevin Dorrell

Luxembourg

[Craig Norborg]

Make sure you're running an IOS that will support dot1q encapsulation, at least IP Plus I believe...