Were you able to verify that the new address works? ... Yes, with $ mul sho/nosym and I turned TCPAn on itself and circuit displayed correct node on the other end :) -- I can also confirm that this works. I'm well used to changing Multinet interface ip addresses and other Multinet parameters on production systems without rebooting so I was interested to try it. (The only reason I've ever found for a reboot is to ensure the startup files have been reconfigured correctly. I suspect this is why Process recommend it. If I liked rebooting things, I'd get a PC) I set up a DECnet-over-IP link between CEIRE and CHEKOV and turned off the SVA-0 circuit on CHEKOV. I made sure that the only DECnet connectivity was over the IP link. Then I changed CHEKOVs ip address, reconfigured DECnet-over-IP and re-established the link. I was then able to SET HOST across the link. No reboot required. It took me a while because CHEKOV, my VAX 2000 would not co-operate. However, after a good shaking, the RD54 spun up and it booted. Regards, Peter Coghlan. BTP::PETER