QinQ on EN switches

From: dennis lin (74dennis@gmail.com)
Date: Thu Aug 14 2008 - 09:09:39 ART


Hello Guys,

I had an interesting trouble today with QinQ NNI to Service Provider.
Traffic was not getting across from Customer site to PE. MAC addresses were
being learned and everything appeared as if it should be up, but would could
not ping and for obvious reasons BGP would not come up.

The ultimate fix was to issue 'no' for the following cmds and re-apply them.

.....
switchport vlan mapping dot1q-tunnel 2205 444 444
 *switchport vlan mapping dot1q-tunnel 2205 605 605*
 switchport vlan mapping dot1q-tunnel 2205 660 660
 switchport vlan mapping dot1q-tunnel 2205 1040 1040
 switchport vlan mapping dot1q-tunnel 2205 1041 1041
 switchport vlan mapping dot1q-tunnel 2205 1046 1046
 switchport vlan mapping dot1q-tunnel 2205 1223 1224
 switchport vlan mapping dot1q-tunnel 2205 1302 1302
 switchport vlan mapping dot1q-tunnel 2205 1325 1325
 switchport vlan mapping dot1q-tunnel 2205 1501 1501
It seems like the ENs forgot their QinQ mapping. Lots of Cust sites were
down.

Guys, Have you seen anything like this or could you think of something that
would cause this?

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