The next (final??) phase of our network migration is almost complete. The server room and the users' offices have been moved from a Layer 2 network to a Layer 3 network, and everything has a new IP address. There have supposedly been no physical changes -- the same switches and servers and clients are involved as last week.

One of the problems we're encountering is intermittent slow response time in interaction with the NetApps. Example: I'm on the PC in my office. It has a session open with a Solaris server that automounts my home directory from a filer. If I cd to my home directory, it may take a countable number of seconds before the prompt comes back. If I try to ls my directory, it may take even longer. Running ls in /home (where *all* the home directories are, hundreds of them) takes so long that I've been giving up before I get any output.

The slowness isn't consistent. Some of the Solaris servers haven't had much trouble at all. Some are pretty frustrating. It wasn't this way last week before the migration.

Any ideas what may be wrong? Where are the likely places to start troubleshooting?

Thanks!