Hi,So if you're having a WLC4402 it isn't possible to Upgrade to 7.6Latest Version for 4402 is 7.0For the 1600-Accesspoints you'll need at least 7.4.100.0So you'll need a new controller (2500/5500/vWLC) but be careful of the compatibility with older ...

What i wanted to test by fix the speed to 100... if the cable is cat5 for example it cannot deliver enough power through at 1gbit. So the switch shows that power is in use but the port may have the status "not connected" If you fix the speed to 100 i...

what categorie is the LAN-cable? (you'll need cat6a)at the switch try speed 100 on switchport... if it's working then, you're cable isn't cat6a

just a guess...try to disable CDP at this port

Hallo,This is because of a bugCSCuj73571If you don't use VLAN1 the issue won't happen.Another Workaround is to turn on and off "ipv6 snooping"...