[cisco-voip] Port keeps going err-disabled

[Vincent]

David,

more likely something to do with his PC, so concentrate on the PC only. 
don't waste your time on other stuffs.  His PC must have some kind of virus 
or spyware, but let me know what you find out.


.........People First..........
Best Regards,

Vincent Dao
Mobile: 714-890-2790
----- Original Message ----- 
From: "David Zhars" <dzhars at gmail.com>
To: <cisco-voip at puck.nether.net>
Sent: Thursday, March 28, 2013 5:28 PM
Subject: [cisco-voip] Port keeps going err-disabled


> hey all.
>
> have 3560's with a bunch of 7941s and PCs hanging off the phones.  All
> ports configured the same (portfast, bpduguard, etc).
>
> I have this one guy that at least once a day, his port shuts off, goes 
> into
> err-disable.  Sometimes it's in that state when he comes in in the 
> morning,
> other times it will be that way when he comes back from lunch.  It does 
> not
> seem to happen when he is working on his PC.
>
> Happened again today, so I went in the 3560, did a "shut" followed by "no
> shut".  The port went connected and a few seconds later, right back to
> err-disable.  I did it several times, and each time, immediately the port
> went back to err-disable.  I finally drove over there, and with just the
> phone, the port stayed up.  plug in the PC, and the port will err-disable.
> I removed some junk ware from his PC and cranked up the AV and Spyware
> protection, will see what happens.
>
> Do you think it might be the phone's bridge?  Flaky switch port (doubtful
> today I moved him to a new port and again, it immed went to err-dis). 
> When
> I do the "show err-dis reason" (I know it's not reason, I forget the
> syntax), the reason listed is "bpduguard".  How the heck do I trip a
> bpduguard with just a phone and PC?  have swapped out the cables too....
>
> Just looking for some insight!  Next will be a new NIC card and running a
> new cable from the data room to his office.
>


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