Yes, our network engineers have had to clear ARP cache in similar situations. Its now a standard item in our migration plans.
________________________________ From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Horlick, Michael Sent: Tuesday, January 25, 2011 11:17 AM To: IBMVM@LISTSERV.UARK.EDU Subject: An update on an earlier issue and how to search VMESA-L Greetings, Just a little update on a question/problem I had last month. I had an issue that when I changed my CPU I couldn't communicate using one of my TCP/IP stacks to the clients network using VIPA/MPROUTE. Last night we did a successful migration and it seems that what was needed to correct the problem was that the network people needed to do some sort of "ARP Clear" function on their routers. As we have only used TCP/IP in production for the last 3 years and I think our machine was older than that this is the first time we went through this. Question: Is this standard operating procedure for any CPU change? On another topic, how does one search the VMESA-L archive? I use to use Google Groups but that doesn't seem to work for VMESA-L and I even sent e-mail to the VMESA-L listserver doing a SEARCH function which also didn't work. Regards, Michael Horlick CGI Montreal
