I've got a bit of a problem with trunking VLAN Dot1Q tagging through a L2TP tunnel.
We have a couple of sites connected to a head office over 2x STM1s, that are coming out soon. There are 2x branch buildings connected to the HO over 2x pairs of Cisco 7200s which are providing a L2 Bridge.
The VLAN trunks from Branch to HO work ok. We need to change to a Routed circuit but need to maintain the VLAN tagging/dot1q.
The following attached diagram/system works over STM1, and on a test bench over a flat point-to-point Cat5e link, but across a WAN circuit we have set up to start with x1 static L2TP from 1x ASR so far to 1x HO ASR, that is doing L2TP only, has sub-interfaces and dot1q tags on the LAN side facing the Client Switch and on the HO side facing the main OSPF Router that also has sub-interfaces and dot1q tags to route the VLAN trunks from the Client Switches. The WAN sides are static routed and can ping it each other and bring up any tunnel you set.
The L2TP tunnels say they are up when trying 'show l2tun', but the traffic never passes over from Branch to HO. If you take out the L2TP and put in a crossover between the Branch Switches and the HO ASR04, the traffic comes straight through, as it does over an STM1
I can post configs later if needed, but it would be really cool if anyone has any suggestions on how to set it up to enable VLAN trunking?
We have followed this
Gurner
We have a couple of sites connected to a head office over 2x STM1s, that are coming out soon. There are 2x branch buildings connected to the HO over 2x pairs of Cisco 7200s which are providing a L2 Bridge.
The VLAN trunks from Branch to HO work ok. We need to change to a Routed circuit but need to maintain the VLAN tagging/dot1q.
The following attached diagram/system works over STM1, and on a test bench over a flat point-to-point Cat5e link, but across a WAN circuit we have set up to start with x1 static L2TP from 1x ASR so far to 1x HO ASR, that is doing L2TP only, has sub-interfaces and dot1q tags on the LAN side facing the Client Switch and on the HO side facing the main OSPF Router that also has sub-interfaces and dot1q tags to route the VLAN trunks from the Client Switches. The WAN sides are static routed and can ping it each other and bring up any tunnel you set.
The L2TP tunnels say they are up when trying 'show l2tun', but the traffic never passes over from Branch to HO. If you take out the L2TP and put in a crossover between the Branch Switches and the HO ASR04, the traffic comes straight through, as it does over an STM1
I can post configs later if needed, but it would be really cool if anyone has any suggestions on how to set it up to enable VLAN trunking?
We have followed this
Gurner