Span VLAN between 2 sites

Answered Question
Sep 17th, 2010
User Badges:

I need to span a vlan between 2 sites connected via ETHERNET. What is best layer 2 solution for this implementation.

I have users in site 1 who needs to talk to users in sites 2 in same vlan.


Thanks,

Correct Answer by Federico Coto F... about 6 years 10 months ago

To span a layer 2 domain over a layer 3 domain can use QinQ or L2TPv3 (i'm sure there are other ways but don't recall now).


Federico.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Federico Coto F... Fri, 09/17/2010 - 10:28
User Badges:
  • Green, 3000 points or more

If you want users on siteA to talk to users on siteB, you don't need to span the VLAN across.

I mean, you can have layer 3 IP connectivity just by using regular routing.


If on the other hand, you need to span the VLAN between a layer 3 domain, there are some mechanisms to do it

i.e.

QinQ, L2TPv3 and some others.


I just see sometimes people confused that they need to span a VLAN across a layer 3 domain, when they actually just need communication.


Correct me if I'm wrong and please describe what you need.


Federico.

smailbouabdallah Fri, 09/17/2010 - 11:32
User Badges:

Hi,


Thanks for quick reply. The business is looking for layer 2 solution. Can you suggest any layer 2 implementation?

Correct Answer
Federico Coto F... Fri, 09/17/2010 - 11:36
User Badges:
  • Green, 3000 points or more

To span a layer 2 domain over a layer 3 domain can use QinQ or L2TPv3 (i'm sure there are other ways but don't recall now).


Federico.

Actions

This Discussion