Well, you've eliminated the Netserver's themselves, what about the power supplies (dual 45A chassis or a newer red/blue label chassis with 70A or 130A supplies)? From a software standpoint, it could be that the ethernet IP of the Netservers are the target of various worms and other malicious zombies out there, or the traffic passing through it from dial clients (likely infested) is somehow giving the cards fits. You should be able to "hide" the Netserver's ethernet IP from the Internet as a whole using access controls at your border router. In other words, the Netserver itself need not be reachable from the entire Internet (or at least have it's access severely limited), although client IP's still would be fully reachable (but it would break external traceroutes in the case of a routed block environment). In the case of client traffic breaking it, you could try individual ingress/egress filters on them if you don't already to see if it helps the issue. As a last-ditch effort, you could probably replace the Netserver with a HiperARC to get a substantially newer hardware and software platform. Brad Ross Cornett wrote:
IS anyone having trouble with Netserver cards locking up. Have 15 in my network and at least half of them have started this about 2 months ago. Have to reboot them. I have replaced them. I have reconfigured them. I really could use some help.
Ross
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