I have a very strange problem. I recently upgraded our old W2K servers to W2003. We have had a Lan to Lan Cisco VPN tunnel between the two servers for a couple of years now. I have been noticing that when the network is interrupted, or the server is rebooted, it starts to send a HUGE amount of ICMP traffic to the gateway of the firewall for quite a while, charts show over 1200 packes a second!. The traffic is being logged on the firewall live logging. Suddenly the traffic quits, and all seems normal. All the logs in event viewer look fine, except for an occasional entry saying that the RPC server is not available. But otherwise the logs are clean. We have no other replication or authentication issues, any ideas?