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Spanning VLAN across a WAN

I have a lab consisting of 3 segments;

Segment 1: R1 with 2 swithces: 5 VLANS, ports trunked with dot1q, vtp was configured, sub-interfaces have been configured with different subnets for each VLAN, and everything is working just fine.

Segment 2 and 3: uplink ports and interswitching ports have been trunked with dot1q, vtp domain has been set; however, the VLANs from segment 1 aren't traversing to segment 2 or 3. What am I missing here?

Thanks,

sK

2 REPLIES
Bronze

Re: Spanning VLAN across a WAN

From what I gather from your post, you are trying to propogate VLANs across a router (R1). It is not possible to route VLANs - the only way to do this is to bridge the interfaces on the router using IRB. Here's a good link on this:

http://www.cisco.com/en/US/tech/tk389/tk815/technologies_tech_note09186a0080094663.shtml

HTH,

Paul

Community Member

Re: Spanning VLAN across a WAN

Thank you much Paul for this valuable piece of information.

SK

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