Bridging VLANs over WAN with GRE

bdecout · ‎07-02-2007

I need to move a site server room to a different location (different state).

I'm trying to find out if a VLAN can be bridged over the internet without a Point to Point connection.

The two sites have a DS3 to the internet.

They both have a 6513 with sup720.

Will a GRE tunnel over IPSEC between the two be able to bridge VLANs so servers can be moved without the need to be re-IP?

I found a post saying it can be done and another one saying it is not supported.

Thanks

thomas.chen · ‎07-06-2007

Each Fast Ethernet port is provided with an RJ-45 connector (100BASE-TX, two pair Category 5 UTP), and a MII connector which can provide connectivity to 100BASE-FX and 100BASE-T4 through customer-provided external transceivers. The Fast Ethernet port adapters can be configured for ISL, supporting VLANs between Catalyst 5000 high-performance switches, and IEEE 802.1000 TB-VLAN for transparently bridging VLANs.

gearnsc · ‎07-06-2007

Posted this earlier in a similar topic:

I've had a similar requirement in the past, where layer 2 connectivity was required between devices in differing locations. Our solution was to build a L2TPv3 pseudowire between router LAN interfaces; to the switches at each site it appeared that they were directly connected.

A configuration guide can be found here: http://cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a00804420e7.html

With this you can setup a standard trunk link between sites, the switches on either end actually see each other as cdp neighbors.

Hope this helps, rate if it does.

Thanks!

bgibson · ‎07-07-2007

Have a look at this...

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801429fb.shtml