I have a sup720 65k. Today we had a server which had a NIC failure, and so we used another spare nic from the same server to get it back online. The same IP details were configured on the new NIC. This took about 30 minutes.
The problem was that when we connected the new nic to the switch the server was not pingable. When i checked the arp table it still had the old arp entry in its table for the faulty nic. I then cleared the arp entry for this IP and everything started working ok. The arp table correctly refreshed to point to the new nic mac-address.
Is this how arp process should work ? What if I had a dual connected server using only 1 IP for redundancy, would we still have to clear the arp entry before the failover worked ?
Your help will be greatly appreciated.