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2912XL looses connectivity ...

Every hour or so connectivity is lost to a 2900XL switch on the network, I'm not able to ping or telnet for about 2 to 5 minutes, but connectivity to the web servers and internet never gets interrupted, (Switch is connected to a firewall then Internet). After telneting I get: "authorization failed!" Ping: "request timed out". PC is connected to the switch (F0/5) in VLANX this pb started this week, nothing was done on the Switch. I have upgraded the IOS(12.0.5-WC5) on the Switch but still the same problem...Any idea? Thanks....

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Re: 2912XL looses connectivity ...

Authentication failure could happen due to different reasons. Have you changed the password and username? also make sure that there have been no new changes made on the firewall. Check the aaa config.

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