I think I may have been experiencing multiple points of failure. Steve has kindly brought up the MULTINET tunnel to his systems, but it looks like the link to MIM is still down: NCP>show known circuits Known Circuit Volatile Summary as of 22-SEP-2010 08:01:44 Circuit State Loopback Adjacent Name Routing Node ISA-0 on TCP-0-19 on 19.41 (SG1) What should I be seeing on the bridge to indicate that BUBBLE is talking to it correctly? I'm presuming when the link is up I should see a routing node against ISA-0 on the above circuit list? Regards, Mark.