How to maintain VLAN tags over a routed connection.
Posted on 2004-09-22
I have a VOIP system from Shoretel which allows me to specify which vlan telephones and PRI interface boxes will reside in (in our case vlan 105).
I want to add a remote site which will be connected to our main site by a dedicated T1. The T1 will carry both VOIP and general data traffic, so what I need to do is find a router that will let me do two things:
1. Let me specify that all VOIP traffic in vlan 105 has priority over all other traffic that is going over the T1, and
2. when a VLAN 105 packet goes over the T1 link I need the vlan tag left intact when the packet is put onto the ethernet network at the remote end of the T1 - its seems that most routers strip of the vlan tags when the pass the packet over the routed link (I was looking to use Adtran's Netvanta 1224R)
Any ideas or commects would be welcome. Am I just not thinking about this problem correctly?