DOT1Q Tunnelling (Q in Q)

[rainman]

Hello,

Today I wrote a configuration for a setup to do DOT1Q Tunnelling... can anybody tell me if I have anything wrong:

interface X/Y
switchport access vlan 10
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
l2protocol-tunnel stp
l2protocol-tunnel vtp
no cdp enable
spanning-tree portfast
end

I would expect with this configuration, to take the DOT1Q frames off interface X/Y, and dump them into VLAN 10. Would this be the proper setup? First time doing it and I'd like to make sure I have it right.


Thanks,

Rainman

 

[dvtestguy]

I have the same config and working just fine...

interface GigabitEthernet1/8
description inner vlan 801
switchport access vlan 801
switchport trunk encapsulation dot1q
switchport mode dot1q-tunnel
no cdp enable

 

[rainman]

Did you have to enable the tunnelling of the default VLAN? I know by default, DOT1Q does not trunk your admin/default VLAN (i.e., VLAN 1) and I did enable this just in case. I also increased my MTU's for ethernet / gigabitethernet frames from 1500 > 1504 per Cisco. Did you increase theses also or are you running the default of 1500 for MTU? Our client who is running off of this DOT1Q tunnel did tell us they had a Novell problem today, so increasing the MTU was def the answer. Just trying to get a "feel" for whats the standard with DOT1Q tunnelling, but I'm starting to feel there is no standard, and you have to enable options based on individual needs.

Thanks for replying,

-Rainman