I configured selective QinQ on a Cisco 4500X interface. The remote vendor's switch is an MRV 9244. After troubleshooting for about 2 hours, we were still unable to pass traffic over the C-tagged VLANs. I can see the remote MAC addresses on the vendor's S-tag VLAN. The vendor is using "standard" QinQ and tried selective QinQ, but to no avail. Any help would be appreciated.
My config:
interface TenGigabitEthernet1/1/7
switchport trunk allowed vlan 2693
switchport mode trunk
switchport vlan mapping 701 dot1q-tunnel 2693
switchport vlan mapping 702 dot1q-tunnel 2693
mtu 1504
end