Layer 2 network over VPN

[siddhartham]

Is it possible to extend the subnet (same broadcast domain) across a VPN tunnel? .For example we have 10.1.100.X in VLAN 100 at HQ can we use the same VLAN and same IP range at a remote site on the other side of the VPN tunnel, if so can they forward broadcast traffic?

Siddhartha       

[Marcin Latosiewicz · Accepted solution]

You need to look into L2 tunneling (L2TP being possibly the choice, includes L2tp ovet ipsec).

Both SSL and IPsec are L3 solutions, you can share same subnet as a LAN interface but you might have problem with broadcasts depending on your configuration and actual needs.

[siddhartham]

Thanks Marcin. I trying to decide between L2TPV3 and DLSW+ but posted it in WAN section. Thank you.

Siddhartha

[mwinnett]

Dlsw+ is designed for legacy IBM kit. Dlsw will be processed switched and should avoided for something more general purpose. Matthew