Try setting the MTU to 1520 and enabling jumbo frames if you can. I had the same issue with q-in-q not passing dot1q and changing the mtu to 1520 solved it.
--- Brian Raaen Network Architect Zcorum On Thu, Oct 27, 2011 at 06:28:36PM +0200, Gökhan Gümüş wrote: > Dear folks, > > I have an issue with one of our customer service. > > Gi0/5 > Gi0/27 > Gi5/13 Fa3/13 > Customer SW ---------------- Customer Edge Switch-A ----------------PE1 > ----------MPLS Core --------------PE 2--------------Customer Edge Switch-B > --------------Customer SW > > I am using q-in-q tunneling to enable customer traffic. Before, customer > port on Customer SW facing our edge switch was in ACCESS mode and it was > working. > Now they have decided to configure this interface as a TRUNK to transmit > multiple VLANs over the trunk. But they can not. > Currently ports are configured as trunk and customer can only transmit > traffic when they do not tag frames ( native-vlan config ) > > For note, i am not using " vlan dot1q tag native " command which is also > double-tagging native vlans. > MTU is fine and above 1504 bytes. > > Please see our configs on Customer Edge Switch below; > > > *Customer Edge Switch A;* > > A#sh run interface Gigabit Ethernet0/5 > Building configuration... > > Current configuration : 337 bytes > ! > interface GigabitEthernet0/5 > switchport access vlan 1106 > switchport mode dot1q-tunnel > switchport nonegotiate > load-interval 60 > speed 100 > duplex full > l2protocol-tunnel cdp > l2protocol-tunnel stp > l2protocol-tunnel vtp > no cdp enable > end > > A#sh run interface GigabitEthernet0/27 > Building configuration... > > Current configuration : 251 bytes > ! > interface GigabitEthernet0/27 > switchport trunk encapsulation dot1q > switchport trunk allowed vlan 1,9,1101,1102,1106 > switchport mode trunk > switchport nonegotiate > end > > --------------------------------------------------------------------------------- > > *Customer Edge Switch B;* > > B#sh run interface fa3/13 > Building configuration... > > Current configuration : 366 bytes > ! > interface FastEthernet3/13 > mtu 2000 > load-interval 60 > switchport > switchport access vlan 1106 > switchport mode dot1q-tunnel > switchport nonegotiate > l2protocol-tunnel cdp > l2protocol-tunnel stp > l2protocol-tunnel vtp > no cdp enable > spanning-tree bpdufilter enable > end > > B#sh run interface gi5/13 > Building configuration... > > Current configuration : 298 bytes > ! > interface GigabitEthernet5/13 > mtu 2000 > load-interval 30 > speed nonegotiate > switchport > switchport trunk encapsulation dot1q > switchport trunk allowed vlan 1101,1102,1106 > switchport mode trunk > no cdp enable > end > > > Is there anybody who had such issue before? > > Thanks and regards, > Gokhan Gumus > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
