Changed from a broken Switch to a working HUB everyting else in my network is ok after the change but not my RS/6000! It refuses to get connected, get time out on Pings both ways - strange?
Could it be some problem with ARP?
More than likely it is the MAC address table on the switch. If you can flush that table (or restart the switch- whichever is easier) it may solve your problem. Flushing the table does not hurt anything - it just rebuilds it again right away. I have had this happen in the past when moving from port to port on a switch.
Hope this helps.
Excelent, it solved my problem.