Are your users complaining of intermittent connectvity ?

I ask because these sort of log messages are perfectly normal. Yes, if a user reboots their laptop you will see these messages in your logs, they are nothing out of the ordinary. However if the same users are havng issues on the network then they could be symptoms of the problem.

In short, no complaints then nothing to worry about.

Jon

hi! some of the users are having issue connecting to our corporate email. the users are not required to key in their pwd and username to outlook once they login to windows. I suspect that they might be some intermittent issue with the connection in the lan itself or high latency in the wan link. In some of these sw port, when i show the interface, i can see that there are Input errors, CRC and frame.

One thing i noticed is that i did not see any of this up/down msg in my 4506 switch. I only see this in the remote site using 2950. Is it some logging or feature that has been turned on or there's an issue with the sw. What can be done to further troubleshoot this? thx.

Are the errors incrementing?  If so are they incrementing constantly?

If the users connect and disconnect the physical LAN cable from their PC's it can induce these sorts of errors briefly.  But they won't be constatntly incrementing.  Constantly incrementing CRC and Frame errors are typical of mismathces in the duplex between the switch and the PC.  Are the switch ports set up for Auto on the speed and duplex?  Are the user's PC's configured to autosense speed and duplex or have they been hard coded?

HTH,

John

Hi Dave,

This does not necessarily mean an issue.  Every time you plug a PC to a port, it will log the activity of the port.  And as you noted, if you have device plugged into a port, when you reboot it the port will go in up and down.

HTH

Reza