Lee, There is/was a known PoE issue with the older 15.x releases where on boot connected devices will power up, but it there is any interruption on that port e.g. Device reboots or cable removed, the port will not power back up without a switch reboot. The problem manifests over time (if I recall). When it’s occurring, if you move the device from a “dead” port to another, does it power back up? When it’s at it worst, other ports won’t respond either.
It was fixed years ago in 15.2 train. Don’t think Cisco ever fixed it in 15.0. I’d get that switch updated to 15.2 and see if the problem goes away. Jeff From: "[email protected]<mailto:[email protected]>" on behalf of "[email protected]<mailto:[email protected]>" Reply-To: "[email protected]<mailto:[email protected]>" Date: Tuesday, August 11, 2015 at 8:47 AM To: "[email protected]<mailto:[email protected]>" Subject: [WIRELESS-LAN] PoE Issue, Cisco Switches- Let's Poll The Audience! We’re also going through TAC on this, but I’d like to see if anyone else is seeing similar in their Cisco switching environment and might have perspective to share. We have an odd, seemingly spontaneous condition where PoE stops working on a port or two, with only switch reboot bringing it back. Most recent switch: WS-C3560X-48 on 15.0(2)SE7. Problem/discovery flow: * One AP out of several on switch goes down * Access switch, “show power inline” shows problem AP port has lost it’s PoE detection signature and is only showing IEEE PD * All other AP ports are fine * For problem port, remove PoE (Power Inline Never) then restore PoE (Power Inline Auto)- Port now dead, will not come back -also do shut/no shut,makes no difference to condition * No error disable on port. No obvious reason for switch being out. * Show environment/post commands reveal no issues with switch power or power controller * Only a reboot restores PoE to problem port Seeing the same sort of condition on PoE camera ports as well- seems very much to be a pure switch issue, nothing to do with AP version/model in this case. Does this ring familiar for anyone? Regards, Lee Badman ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
