end to end vlans

Unanswered Question
Apr 21st, 2009
User Badges:

Is it possible to have switches separated by a WAN share vlans? Can I have a host on a switch in Site A belong to vlan 10 and have a host on a remote site with a MPLS cloud in between the two switches on vlan 10 as well? How would the trunking and vtp adverstisements span layer 3?

thank you,


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
lamav Tue, 04/21/2009 - 12:27
User Badges:
  • Blue, 1500 points or more


That question is asked a lot on these forums. I wonder if doing a search would help you.

But to answer your question, one way of spanning a vlan across a L3 cloud is to tunnel through it, such as with L2TP or GRE tunnels. There are also L2 MPLS-based VPNs that you can look into.

Off the cuff, I would say GRE tunnels are the easiest to set up.



This Discussion