No bug ID, but it’s mentioned in the release notes for 15.2, but oddly, not in the open caveat section. That suggests it’s something that can’t be fixed.
Jeff From: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" on behalf of "trent.h...@louisville.edu<mailto:trent.h...@louisville.edu>" Reply-To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" Date: Wednesday, August 12, 2015 at 5:26 AM To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" Subject: Re: [WIRELESS-LAN] PoE Issue, Cisco Switches- Let's Poll The Audience! You have a bug id for this? Sent from my iPhone On Aug 11, 2015, at 6:20 PM, Jeffrey D. Sessler <j...@scrippscollege.edu<mailto:j...@scrippscollege.edu>> wrote: Lee, This could apply too. It’s a bug in the –X series. When a powered device (such as an IP phone) connected to a PoE+ port restarts and sends a CDP or LLDP packet with a power TLV, the switch locks to the power-negotiation protocol of that first packet. The switch does not respond to power requests from the other protocol. For example, if the switch is locked to CDP, it does not provide power to devices that send LLDP requests. If CDP is disabled after the switch has locked on it, the switch does not respond to LLDP power requests and can no longer power on any accessories. Jeff From: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" on behalf of "lhbad...@syr.edu<mailto:lhbad...@syr.edu>" Reply-To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" Date: Tuesday, August 11, 2015 at 9:47 AM To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" Subject: Re: [WIRELESS-LAN] PoE Issue, Cisco Switches- Let's Poll The Audience! Hi Jeff, Thanks for the information- generally, yes the problem device comes up an another port. Part of the madness is the infrequency and unpredictability of the condition, so hard to do any sort of real testing. But you’ve given us a good place to start with a version-quest☺ -Lee Lee Badman | Network Architect Information Technology Services 206 Machinery Hall 120 Smith Drive Syracuse, New York 13244 t 315.443.3003 f 315.443.4325 e lhbad...@syr.edu<mailto:lhbad...@syr.edu>w its.syr.edu<http://its.syr.edu> SYRACUSE UNIVERSITY syr.edu<http://syr.edu> From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jeffrey D. Sessler Sent: Tuesday, August 11, 2015 12:42 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] PoE Issue, Cisco Switches- Let's Poll The Audience! 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: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" on behalf of "lhbad...@syr.edu<mailto:lhbad...@syr.edu>" Reply-To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" Date: Tuesday, August 11, 2015 at 8:47 AM To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" 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/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_&d=AwMGaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=rtlMYUF4nwLIYnoG0qXTf9aFc5RLK7DMyf8lTMu__vs&m=-HqmZd05CurAzwRvF8oC4HWyUSeykUsGcypAJrVE1RE&s=j5ufqmaueyZo7d6iFrbF7U02o178aPU21g1prk6GJ4A&e=>. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_&d=AwMGaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=rtlMYUF4nwLIYnoG0qXTf9aFc5RLK7DMyf8lTMu__vs&m=-HqmZd05CurAzwRvF8oC4HWyUSeykUsGcypAJrVE1RE&s=j5ufqmaueyZo7d6iFrbF7U02o178aPU21g1prk6GJ4A&e=>. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_&d=AwMGaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=rtlMYUF4nwLIYnoG0qXTf9aFc5RLK7DMyf8lTMu__vs&m=-HqmZd05CurAzwRvF8oC4HWyUSeykUsGcypAJrVE1RE&s=j5ufqmaueyZo7d6iFrbF7U02o178aPU21g1prk6GJ4A&e=>. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_&d=AwMGaQ&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=rtlMYUF4nwLIYnoG0qXTf9aFc5RLK7DMyf8lTMu__vs&m=-HqmZd05CurAzwRvF8oC4HWyUSeykUsGcypAJrVE1RE&s=j5ufqmaueyZo7d6iFrbF7U02o178aPU21g1prk6GJ4A&e=>. ********** 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/.
