Hi all,
I would like to test Q-in-Q and configure it to transport the vtp and stp for the C-Vlan's across the P-Vlan so that both spanning tree and VTP update to get across the Q-in-Q tunnel.
Here is the config I have on the q-in-q switches :
System MTU size is 1504 bytes
vlan dot1q tag native
interface FastEthernet1/0/47
description intf toward customer
switchport access vlan 150
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
l2protocol-tunnel stp
l2protocol-tunnel vtp
interface FastEthernet1/0/48
description intf toward provider
switchport access vlan 150
switchport mode access
the config is similar on the other switch
I have a square with those 2 switches and 2 customer switches
s1 - s2 - s3 - s4 - s1
the link between s3 and s4 is the QinQ link.
If I cut the link between S1 and S2, both Switches become root switches and dont use the Q-in-Q link.
any help greatly appreciated,
Thanks