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Author Topic: Bridge a LAN using two SR1002 routers, over IPSEC or GRE tunnels  (Read 2422 times)

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Offline kiml

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I've been trying unsuccessfully to create a bridge between the LAN at two sites.  I need Site A and Site B to use the same vlan/subnet.  This is to accomplish an unusual and temporary situation.

The SR100x configuration guide states in the GRE section, pages 127-131 (I may be off a page or two) that you can do this.  However, either I'm not interpreting the documentation correctly or this just doesn't work.

I've attached a sanitized diagram.

The switches I'm trying to bridge at both sites are HP 5500-series on Site A and HP 5120s at Site B.

Essentially, I need hosts at Site A to be able to communicate with hosts on Site B, and through the PPP link at Site B, to our 3rd party DR-hosted mainframe and as400


Offline Paul L

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Re: Bridge a LAN using two SR1002 routers, over IPSEC or GRE tunnels
« Reply #1 on: April 02, 2014, 10:24:56 PM »
you will need to talk to your carrier and find out what kind of service you purchased. MPLS is typically routed and that won't work for you in the case.
if you want to extend vlans you will need to buy a VPLS service and you shouldn't have to mess around with GRE.
essentially you just want to tag both ports for vlan 2 and 18 and it should work. Just might need to choose a default vlan on both ports.


with that said, I am not overly familiar with GRE. 

I would call your carrier and explain to them your business requirement.
ACSS- Avaya Enterprise Routing Switch  #8

Offline bluepublic

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Re: Bridge a LAN using two SR1002 routers, over IPSEC or GRE tunnels
« Reply #2 on: September 08, 2015, 04:40:31 AM »

Read about how many times it has felt like that was the first time I read it.

Offline TankII

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Re: Bridge a LAN using two SR1002 routers, over IPSEC or GRE tunnels
« Reply #3 on: September 21, 2015, 09:18:13 AM »
We use Aruba RAP-5 units to do this.  Requires a controller, but it is inexpensive and easy to implement.
We also tunnel OSPF across the Internet for backup links (our primary connections are private circuits).

Don't have any SR1002 routers to play with though.

TankII