Cisco Wireless :: 5508 - WLC Randomly Restarts Itself
Feb 13, 2012
I am currently using a 5508 Cisco WLC with software version 6.0.196.0. It has been running smoothly for the past 1.5 years, but have recently discovered that the WLC will randomly restarts itself. I know this because I have seen the disruptions in our wireless network, as well as seen the Up time counter reset itself. I have tried looking at the trap logs to see if there is any significant network traffic that may be causing this, but from what I can tell there is nothing out of the ordinary. The restarts happen randomly at random times. I have never seen a Cisco device behave this way, not a switch, a router or security appliance for that fact. What may be causing the WLC to just reboot itself?
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Oct 6, 2012
I'v been getting this strange problem.Each 5-10 minutes my internet restarts,it basically shut downs for 20 sec and then reapears,its really annoying because videos take 1 year to load,i cant play any multiplayer games because i get kicked every 5 mins and i cant talk on skype because call crashes each 5 mins.I am using a linksys router.
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May 14, 2012
We have a situation where wireless access points are just going down randomly on our network. The situation is as follows:
We have 2 Cisco 5508 WLCs (licensed for 250 APs each, with more licenses en-route), both running software version 7.2.103.0. Then we have a large-ish number (±300) of Cisco AIR-CAP3502I-E-K9 APs connecting to these two controllers. The APs are either connected to Cisco WS-C2960S switches, or in "older" areas of the network they are connected to WS-C2950 switches. We do not have PoE switches installed yet, so all APs are powered by power injectors (AIR-PWRINJ4=).
Anyhaw, all the access points are in FlexConnect (previously HREAP) mode, and they all connect via trunk ports to the switches in order to get the VLAN per SSID working. Both controllers are in the same mobility group, and both are in the DNS as "cisco-capwap-controller" as they are load balancing. The APs are installed about 25m apart in most areas. There is one installation where two APs are about 10m apart, but this is due to the shape of the building in which they are installed. We have no autonomous APs deployed at all...
The problem is that some access points work for about a day, and then they just disassociate with whichever controller they were associated to, and then they just fall off the network completely. Both WLCs, the NCS, and the network monitoring system (WhatsUp Gold) show the affected APs as physically unreachable. Looking at the trunk port on the switch, it shows that the port is up and the line protocol is up, input rate is 0 bits/sec, and output rate is up to 70,000bits/sec. There are no input or output errors on the switch port. Here is the output from one such switch port: [code]
Connecting a console cable to an affected AP is fruitless, as the AP appears to be unresponsive while it is "down". Rebooting the AP, then connecting a console cable works, but then you've lost your syslogs. Looking at the Ethernet interface on the AP, it appears as if the interface is picking up a lot of errors, especially CRC errors, which would indicate a physical cable problem.
I got our cabling contractor out to do a cable test again, and it passes every time. We have them test both the Systimax and the Molex cable installations of affected APs, and all is OK. They use a Fluke MicroScanner² cable tester which certifies the Cat 6 cable from patch lead to flylead. No problems there, and I trust that the cable is 100% as tested.
So I swap the power injector of an affected AP (let's call it AP A) with an AP that is not affected by this (let's call this one AP B), and AP A goes down again after a day, or sometimes only a couple of hours. AP B remains operational as usual. If I swap AP A out with a new AP (AP C), then AP C starts showing the same symptoms after about a day, and then it also just goes down. When "suspect" AP A is installed somewhere else, then it works and stays operational for, well, 58 days now. Changing the switch/switch port also makes no difference.
This happens to one of the APs that are part of the "10m apart deployment", but it also happens to another AP that is completely on its own in a building far away from any other wireless source, so I cannot think that this could be the problem. I happens to an AP that is less than 100m away from its closest WLC, and it happens to an AP that is more than 350km away from its closest controller. All the other APs deployed in our remote campus (350km fibre link) are 100% OK. It happens to APs connected to the older WS-C2950 switches as well as the brand new WS-C2960S switches.
I am at wits end with this one. Where could the problem be? I trust the "Big Green" company that does our cable installations, and I trust the equipment they use. I also trust both Systimax and Molex to be very good products. And I do trust Cisco, as this is the only network equipment we deploy.
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Jan 7, 2013
I am at one of our remote offices and I am noticing my laptop, despite excellent signal strength is periodically losing IP connectivity on the wireless network. When it drops, all of my IP connectivity stops (pings fail, RDP sessions "await reconnection", etc...). The lower right corner still shows I'm connected to the hidden WPA2 Enterprise SSID. The only way to reconnect is to select disconnect on it, then click connect again. Immediately everything IP based starts working.
There is a 5508 controller in the headquarters. The site I am at has a 30mbps fiber point to point WAN to the headquarters. This site has 2 x 3300 series LAPs which are very good coverage. H-REAP mode is on so traffic terminates at the local office because it is more efficient than traversing the LAN twice for things like local file and print sharing, dhcp, proper active directory sites and services mapping, etc.
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Jun 7, 2013
Have an SRP527W that I've had a couple of years,
Model:SRP527W, ADSL2+ AnnexA, 802.11n ETSI, 2FXS/1FXOVersion ID:V03Hardware Version:4.0.0Boot Version:1.1.17 (Jan 4 2010 - 21:15:46)Firmware Version:1.01.29 (002) Mar 29 2013ADSL Firmware Version:0.78.0Recovery Firmware:1.01.20 (011)Setup Wizard Version:20110728.00
As indicated in the subject, wireless users are finding that it is either unattachable (shows up in the list but fails to attach) or if you manage to authenticate and get in, it's painfully slow or simply drops out. Security is WPA-PSK. Only noticed the issue after a couple of Windows 8 laptops came into the household, but the problem still seems to be there when they are off so not sure if they are connected in some way or not. Updated to the latest firmware - no change. Wired connections are fine and when it's initially restarted, so is the wireless, seems to happen sometime after wireless services are restarted. Only the one Wireless SSID, nothing fancy, max users around 5, all on laptops or the odd pad. I changed channels done narrow wide etc, (using mixed mode - some Wireless N laptops some Wireless B/G. Nothing seems to make any difference. No log entries until the Wireless system is restarted, doesn't require a reboot of the router, just a SUBMIT of the existing wireless settings to force it to restart.
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Nov 25, 2011
Have a MacBook and using Firefox. All lights on the router and modem are green. Does the same thing no matter what distance laptop is from router/modem. Seems to do it in 2-3 minute intervals.
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Aug 23, 2011
I'm renting a basement at the moment and I am trying to get my desktop to connect to their wireless network. My laptop is fine but the desktop just keeps restarting itself when its attempting to connect. This didn't happen before I moved. When it finishes restarting there's a popup asking to send a error report to Windows. Since I have no internet that won't I clicked the details of the error message this is what I see.[CODE]
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Feb 13, 2013
I have recently purchases a Cisco srp547w for my organisation. It is working fine with one SSID enabled. I have configured everything with no problems using the Web interface. However, whenever I click the Edit button, in the Security column, in the Wireless Table under Basic Wireless Settings I get a pop up message which says :"Some values have been changed. The router must restart the wireless module to take effect.Please wait several seconds" I have tried this using 3 different browsers and get the same behaviour in each browser.
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Apr 9, 2012
from todays morning my 2921 is restarting about one time per two hours:
uptime is 1 minute
System returned to ROM by bus error at PC 0x23A49808, address 0x0 at 15:45:07 CET Tue Apr 10 2012
[Code].....
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Jul 28, 2010
we have an RV082 router that a few days ago started restarting itself after normal usage.The simpton is that when people come to office, starting using the Internet the RV082 resets. It stays online for 3 to 12 minutes and then it resets again.
clicking on Reset to Factory Default in the web interfaceafter the reset, I confirmed that it was reset to factory default I reset it again using the reset buttomre-configure the RV082 manually.I also tested with another identical rv082 (hw version and firmware version) and after doing a backup of the config of the original rv082 and restoring it in the new rv082, the same problem happends.
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May 16, 2012
DSL in my modem nearly takes 30 minutes to start operating once i start modem two lights in power and the Lan are glowing but Dsl is not for more than 30 minutes then after that it operates but once u restart the system or switch the modem off and On it again takes 30 minustes to start often it restarts itself when operating the Dsl wat would b the problem any wire or cable or modem itself or splitter
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Jan 8, 2011
my ASR1006 router with the IOS ver:
Cisco IOS Software, IOS-XE Software (PPC_LINUX_IOSD-ADVENTERPRISE-M), Version 12.2(33)XNE, RELEASE SOFTWARE (fc1)
is restarting again and again when I try to write the configuration.
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Feb 22, 2013
I have a problem where the complete home network disconnects whenever my computer reboots from idle state (either after leaving it for a while so it goes on sleep, or by putting it on sleep mode). It then takes a few (long) minutes for the network, and the internet access to it to reconnect. In the meantime ALL devices in the house (other laptops, ipads etc) lose connection too. It's only my computer which does this, so i'm assuming that there's something wrong with the settings on computer.
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Apr 18, 2011
Im using a DLINK DIR 615 N series router.It was working fine since few months but recently from past 1 month, my router is keep on getting restarting.Like, it restarts (red light is on) frequently after every 10 seconds, even i can't get so much of time to reconfigure it.
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Jan 22, 2011
i have a DIR-601. Basic settings, port forwarded for Xbox live and Wolfenstein enemy territory.I have a home PC with a wired connection and a laptop which is set up through wireless. I installed the game Wolfenstein: Enemy Territory on my laptop and every time I start the game and attempt to fetch a server list, my router resets itself. The game works fine when I connect directly to my modem, but not when I connect to my router
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May 25, 2013
Switch automatically restarts for no reason , I have upgraded the software.can not find fault. more crashinfo, see the following output:
HKZ-SSL-4-NAN-4506#more crashinfo:data
Current Time: 5/27/2013 10:28:10
Last Power Failure: 05/08/2013 16:55:28
Last Reload Status: 00000000
Last Software Reset State: 00000301
[code]...
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May 25, 2013
A 4506 Switch reboot several times a day for no reason, I have been trying to upgrade the software . Normal operation of more than ten days , Still there reason to restart . CPU and memory usage is normal
Switch output information below:
HKZ-SSL-4-NAN-4506#sh ver
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICES-M), Version 12.2(54)SG1, RELEASE SOFTWARE (fc1) [ code].....
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Aug 18, 2012
I'm having issue with wireless connection on Belkin router F5D7633-4.Every 1-2 days my router disconnect and reconnect for no apparent reasons. When this happens, it affects it's wifi. All the devices in my house couldn't connect via wireless to this router. The only way to get these devices connected is to manually reboot the router.Do you know how to allow the router to allow many devices connected at same time?
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Jun 12, 2013
After insertion of SFP module in the Switch i have messages bellow and the switch hangs after couple of minutes it restarts
[Code]....
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Mar 12, 2013
I am running winsxp prodessional.I have a belkin N600 DB Wireless N+ Router and it is hooked up to a vmax 480 security syestem . this system allows me to see the cameras remotely on my ipad, i iphone amd laptop .
my problem is this the router shuts down and restarts( it must be programmed to do this ) and i lose the remote connection to the cameras. if i am home i can unplug the vmax and it will restart and find the router etc however when i am traveling i can not do this.
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Sep 4, 2011
I have a Motorola modem SURFBoard SB4200, along with a wireless Linksys router that connects to that modem. The router works normally but the modem often dies and restarts itself after about 1-2 minutes.
What could be causing this problem? How should I start debugging it?
Could an excessive amount of network traffic be bringing down the modem? Are there any tools that can monitor the modem?
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Mar 22, 2011
I tried setting up the wireless at my mom's house, and she has the following hardware:Motorola SB4220 Surfboard ModemNetgear RangeMax WPN824 RouterAll computers run Windows, XP or VistaAlso, when I go to Control Panel -> Network Connections, under "Local Area Connection" it says "Realtek RTL8139 Family PCI Fast Ethernet NIC". I guess that's a driver, but I don't know what that means.The wireless works, but it turns off and on randomly every couple of seconds, so anyone using it has to keep refreshing pages until it catches a signal.Here's something I think might show where the cause is: when I go to Control Panel -> Network Connections, it usually shows "LAN or High Speed Internet", but sometimes it also shows "Internet Gateway", and the following:
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Sep 20, 2011
About twice a day (that I notice) my wireless loses its internet connection. All the wired machines continue to be connected to the internet but any wireless ones lose internet, though they maintain a connection with the router.
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Jun 5, 2012
I've got this weird problem with my AP. It keeps rebooting randomly. It happen to all the AP in my campus randomly. It happens recently. It have been commission for quite a long time. ie user able to connect and use it. its connect back to the controller to back in another campus. Below are the logs i gather.
*Jun 7 11:13:54.287: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to up
*Jun 7 11:13:54.290: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to down
[Code]......
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Jan 23, 2013
My wireless adapter keeps turning off randomly on my HP G60 120EM.
It will have my connection strength icon on the icon tray and then just randomly display an adapter with a red cross through it.I have made sure that the adapter is not set to turn off on power save but still the problem persists.I thought it could be the adapter being loose inside the laptop but if i give the laptop a small shake it doesn't disconnect and I opened up the laptop and everything seems fine.This is where it gets a bit strange. If I close the laptop lid then open it again, the wireless is fine, but will drop off again about a minute later.
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Oct 18, 2012
I have been using the same modem/router since late july and I have never had a problem with my wireless. Then randomly this morning it was gone. I can see lots of my neighbors networks just not mine. I restarted my router multiple times and my computer. I am now connected to the modem by ethernet cord
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Feb 28, 2011
After many weeks of working well, with no problem, the router started to randomly disconnect 2 days ago and since then it happens few times during the day.I haven't changed anything in the setting for more than 1 month so I really don't understand why it happens.Yesterday, my fiancee was using the laptop and me the desktop when the connection dropped only for my PC, because hers was still working.Today it happened already 2 times and I would like to know how can I solve this issue. I must remind everybody that I a beginner when it comes to configuring the wireless router.
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Aug 7, 2011
I am currently picking up off a friends internet connection. Every day it seems to randomly kick off. I have tried a few troubleshoot fixes and none have worked. This has only happened with my friends connection before my wireless worked just fine. Is there a way to fix it from crashing?
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Sep 30, 2011
My wireless internet will randomly shut off, roughly every other day. It will shut up and say that my wireless router needs to be reset, but all other wireless devices continue to work throughout the house. I could run any amount of diagnostic but it will not fix. The only time it fixes it when it says "repair as administrator" as one of the options in diagnostic test which does not always appear. I went to school yesterday, and my laptop would not connect to the wireless network there at all, but everyone else around me connected fine.
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Apr 5, 2012
My wireless network randomly disconnect ? adsl/thomson TG585 v7/TP-Link N adepter/win7. In device manager (show hidden devices it look like this) ?
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Feb 26, 2013
We have a situation with 20 4410N's They are connected through a 2960 switch. They runned for about a year with no problems. We use the WiFi system with 10 cisco wireless ip phones, several workstations (5-10) and a few mobile devices.
Three weeks ago we took 10-15 iPads in commission (almost equally divided over the AP's), since then the trouble started. Several accesspoints stop randomly responding a few times a, day. We updated to the latest firmware (2.0.4.2), but that did not solve the problems.
Were using 3 SSID's WPA2 encryption and fixed IP's for the AP's. If we can't get a hold on this we have to replace all the AP's by other ones.
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Mar 3, 2011
I just bought a linksys AE1000 usb wireless adapter for my desk top computer because there are no phone lines in the room with the computer for me to connect the dsl modem. In the room with the dsl modem there is the Linksys E3000 wirless router. My desktop will randomly lose connection with the router yet other devices that use wifi in the house work fine (ex: ipod touch, android phone, and xbox 360.) i have went through and reset all devices and gave the desk top priority in the network but it hasnt worked. The desktop uses XP.
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Feb 26, 2013
My internet works fine but after a random period of time, usually 20-30 minutes the internet stops responding. I have ran a diagnostics test using the Intel PROset/wireless tools program and it states on the ping test that there is no response from the default gateway and the DHCP server.
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