Not sure we have hit that issue, but still seeing some crash issues since May last year
We have had 5 PRD controllers on 110.0 since 1st Feb and another 1(dev) since December last year. One of the PRD crashed 2 days ago, but that is all we have seen. I'm not sure if ours is related to memory, it's suspiciously looks like a similar crash to what we have seen since 7.6.120 and every release in between. (yep, take that kick). Though we haven't seen anything in the logs(memory allocation failures) like we did the first rounds in 7.6.120.0 in the other crashes, the memory usage pattern has similarities. That is it will gradually rise from 55-70% (where it's normally stable) upto 80-85%, then crash. (see attached image). We rarely get crash logs or dumps for this. Has been less obvious and occurred less since 7.6.120.0 but still appears to show up. Hard to tell with the one 2 days ago, Prime graphs are currently doing weird things.... Surprise surprise. Another thing we found with the upgrade to 8.0 was that 2 controllers crashed while downloading the software, this was memory again. Both controllers exhibited that wonderful memory issue upon investigation.... So next time we'll check memory and do a pre-reboot... The upgrade worked the second time around. If you monitor cisco uptime on your devices you can get messages when a device reboots, handy for when the timing means you don't get the down message. There is a reset timer on them though, which can provide false alerts...we have never hit that on a controller, they aren't up long enough.. I think it's 2+years, so we have seen it on switches PROBLEM for 'cisco_uptime' on host 'c5508-01-net02-plazadc-nt' (129.127.xxx.xxx / Wireless Controller) 0d 0h 0m 10s ago (Wed Mar 18 06:54:09 ACDT 2015) ----------------------------------- Uptime CRITICAL - *26994* Performance Data: iso.3.6.1.2.1.1.3.0=26994 ----------------------------------- -- Jason Cook The University of Adelaide, AUSTRALIA 5005 Ph : +61 8 8313 4800 From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Lee H Badman Sent: Thursday, 19 March 2015 12:23 AM To: [email protected] Subject: [WIRELESS-LAN] WLC 5508 Reboots- 8.0.110.0 Code Sigh... just kick me. Our latest Cisco WLAN fun comes in the form of 5508 spontaneous reboots on 8.0.110.0 code. Has anyone else on the list experienced this? I do find this Support Community thread: https://supportforums.cisco.com/discussion/12411926/wlc-5508-automatically-restarting-twice-week#comment-10362606 And this related bug: https://tools.cisco.com/bugsearch/bug/CSCuq74491 Have had one reboot today, and found that another had done so last week quick enough where monitoring and alerting didn't catch it. Now going through all of them to see if there might have been others missed. TAC case open and I see that 8.0.110.0 is no longer available to download, with 8.0.115.0 "recommended". -Lee Badman Lee Badman Wireless/Network Architect ITS, Syracuse University 315.443.3003 (Blog: http://wirednot.wordpress.com) ********** 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/.
