I upgraded a 3850 stack to version 12.  This stack is connected via fiber to a 3560-cx and via another line to an old 3560.  The ports say they are connected.  The IP-cameras connected to both switches don't show video.  There are no error messages o...

We have a 3750 stack on 12.2 (25).  They have been in place for years with no recent config changes.  We have two ports that the phone drops connection on after a couple of minutes.  The cable test fine.  If we jack in to the computer it is fine.  If...

Setting up a new Catalyst 3750.  It is hooked up to a switch stack (two 3750s).  On the stack the master has both fiber ports filled, so I am using GigabitEthernet 2/0/1 on the other switch. On the new switch I have a Ubiquity AP connected to 1/0/15 ...