Joe, How did you find out the radios were down? Did they otherwise appear up on the wired side? Which platforms and/or PoE blades? V-blades or V-AF-blades? Thanks, Bruce T. Johnson | Network Engineer | Partners Healthcare Network Engineering | 617.726.9662 | Pager: 31633 | bjohns...@partners.org
________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv on behalf of Roth, Joe Sent: Thu 3/19/2009 2:35 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? It was originally in response to a found condition. i.e. we upgraded the controllers (I don't remember what version, this was awhile ago) and quite a few of the APs shut their radios down. We now proactively just run this script now and again, because we will occasionally get a radio that goes down, either from a hardware reset or something else. ________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Lee H Badman Sent: Thursday, March 19, 2009 1:37 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? Hi Joe- For sure I see this on 3550 switch today, and am digging to see where else this has occurred from the switch perspective. So you've done your thing in a sort of proactive monitoring mode, or in response to a found condition? -Lee Lee H. Badman Wireless/Network Engineer Information Technology and Services Syracuse University 315 443-3003 ________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Roth, Joe Sent: Thursday, March 19, 2009 12:50 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? Lee, We had to do this across campus with any AP connected to a 3550 or 2950 series switch. I actually wrote a script that would telnet to our controllers, get the AP status and send the power injector command if need be. --Joe ________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Lee H Badman Sent: Thursday, March 19, 2009 12:42 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? Hi Bruce- A mix of old and new across several switching models. Opening a TAC case, if any substance emerges, will share with the group. I'm seeing other anecdotal evidence that this sort of thing is far from being a Cisco-only problem, though. -Lee ________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Johnson, Bruce T Sent: Thursday, March 19, 2009 11:59 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? Lee, How old are these 1130s? Some older ones have issues using all the 5GHz bands, they may have other issues. Check the Field Notices on CCO. Bruce T. Johnson | Network Engineer | Partners Healthcare Network Engineering | 617.726.9662 | Pager: 31633 | bjohns...@partners.org 149 13th Street, 10th Floor, Mailstop 10055B, Charlestown, Ma 02129 On Mar 19, 2009, at 11:13 AM, "Lee H Badman" <lhbad...@syr.edu> wrote: Running 4.2.176, but have seen this going back to 3.2. Is an occasional occurrence, rarely the same AP twice, and usually somewhat out of the blue. For us, cabling can be ruled out (for the most part). I know Bruce suggested disabling CDP on AP ports, but that's really not an option as we rely on that information- need all the help we can get keeping track of 2,000+ APs. When one loses its controller association but still has IP address, CDP can be used to find it to kill/restore power for remote reboot- needed on occasion. I'm getting the sense that we are not alone in these power issues... Lee H. Badman Wireless/Network Engineer Information Technology and Services Syracuse University 315 443-3003 ________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Hector J Rios Sent: Thursday, March 19, 2009 10:35 AM To: <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? Lee, What version of controller code are you running? I'm sure you know this but just make sure the Cisco PoE is providing standard 802.3af, otherwise you have to check the "PreStandard" box. It's interesting because we had a similar issues a while ago, but with injectors, as opposed to the switches. Usually unchecking all the options for the AP under "PoE ethernet settings" and restarting the AP would do the trick. Finally, check your cables and make sure there are no attenuation issues or a cut somewhere along the line. Thanks Hector Rios Louisiana State University From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Lee H Badman Sent: Thursday, March 19, 2009 9:00 AM To: <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Have to lie to LWAPP APs about power injectors? Wondering if anyone else experiences this. I'm working now to see if it is isolated to a single Catalyst switch or if it is more widespread. Frequently, we will get a report that a radio on an LWAPP AP is down. Sometimes the alarm is for insufficient drawn power, sometimes not- just radio down. Better than 90% of the time, a simple AP reboot will not do any good- we have to lie to the controller that the AP has a PoE injector installed, even though the AP is on a switch. Usually the condition is onesy-twoesy- not every AP on a given switch (although this morning we saw that) and often happens on APs that are obviously not taxing a given switch's available PoE output. I am opening a case as we see this enough to be of concern, but also am wondering if anyone else has experienced this in a given environment where LWAPP APs are powered by Cisco PoE switches? Thanks- Lee Lee H. Badman Wireless/Network Engineer Information Technology and Services Syracuse University 315 443-3003 ********** 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/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. 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