On 05-Oct-97 Craig Sanders wrote: > >my guess is that your problem may be broken DNS, mostly because of the >telnet delay. is named still running on your name server machine? can it >resolve hostnames and ip addresses? can other machines on the network >use it to resolve names? are all the zone files intact? any errors in >/var/log/daemon.log? check /etc/resolv.conf on the server, too...is it >pointing at the correct name server?
You can rule out a traffic flood by simply pulling the connection to the outside world. Then see if your internal services perk up. > >another possibility is that you have another faulty ethernet card >somewhere on your network - it's odd to get 2 or more cards die at the >same time...maybe you had a lightning strike nearby or some bizarre >voltage spike on your ethernet, maybe induced voltage from running >your cables too close to a huge coil/transformer/electrical motor or >something like that (these are only guesses, of course) Have you added another machine to the network that is plugged into a different mains power circuit? If you are using coax for your ethernet, the shield is running at power-line ground. If there is a difference in ground potential between two systems on the ethernet, you have a recipie for disaster. Same goes for any serial cables that you might have added to a terminal that is plugged into a different power circuit, many manufacturers of serial devices do not properly isolate pin-1 from pin-7 (on a DB-25 connector) and can cause ground loops. Example, if you run a coax to your buddy next door, you might have serious trouble if there is a diffefence betwen the ground circuits in the two houses. Even something as minor as a bad connection in a power strip can cause trouble. If you have a voltmeter, you might remove the coax connection at each machine, one at a time, and measure between the connector shell and the computer chassis. If you read more than a volt or so, you might have trouble. Replace the connector before checking the next machine. -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
