I've got a situation that involves Microsoft's cluster service. It moves a Sql server to another physical server in case of a failover. The sql server's IP address doesn't change, but the mac address changes depending on the server that it moves to.
The problem that we're having is that the arp cache isn't timing out in the switch. Microsoft says that it's because the switch isn't forwarding gratuitous arp packets. How do I enable this?
I found that I can do an "ip arp gratuitous local", but I'm not sure that's going to do what I want.