Span VLAN between 2 sites

[smailbouabdallah]

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,

[Federico Coto Fajardo]

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]

Hi,

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

[Federico Coto Fajardo · Accepted solution]

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.