Cisco :: Getting Disconnected Randomly - 5508 Controller / 3300 Series LAPs
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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Sep 23, 2010
how to setup the 5508 Series LAN wireless controller. The online documentation are not details. What different between Service Interface IP and Management interface IP. The device IP is using what type service or management interface.
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Jun 11, 2012
I have a 5508 WLC licensed for 100 APs. I have 1 - 1042 LAP connected for testing. I have DHCP configured for the AP, and it gets an address of 192.168.254.100/24 - the controller's management interface is 192.168.254.99/24. I can see that the AP is getting an IP and I can ping it from the controller. However, I simply do not see the AP associating. I enabled capwap debiugging and watched the events, but I didn't see anything crazy that clued me in. What am I doing wrong?
The controller is v6.0.199.4
Every time I have set these up in the past they have been pretty straight forward. I haven't gotten too deep into the config on the WLC becuase I don't want to cause more issues.
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Aug 26, 2012
We have a 5508 controller with about 40 LAPs, running AIR-CT5500-K9-7-2-103-0-FUS software.The need has arose to have LAPs in various locations that only broadcast specific SSIDs.
I've got seperate dyanmic interfaces already created.We have 3 "Normal" SSIDs that we broadcast to the LAPs already associated with the 5508.2 more SSIDs were created (2 different purposes).
I just can't figure out how to get it to certain LAPs to only broadcast the specific SSIDs, while the rest broadcast the normal 3, but not those 2 new ones.
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Feb 7, 2013
So, i just got a new computer from a friend of mine.It is a couple years old running Vista, but i keep having this problem.I can connect to either of my routers, and i will be fine for about 5-10 mins before it disconnects me from Skype or Yahoo or whatever webpage i am on.The connection icon in the corner doesn't say it is disconnected, but everything disconnects.
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Mar 6, 2012
Can Controller 4400 series work with Aironet 3600 series?
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Feb 2, 2012
End user has a AP1262 which at the beguinning was working fine, suddendly clients reports problems with disconnections. [code]
the version of IOS is Version 12.4(25d)JA., WPA- PSK is set,I have check this errors in cisco tools, it says about possible reasons; one of them
A failure of the Michael MIC in a packet usually indicates an active attack on your network or RF problems.For the moment I set countermeasure tkip hold-time 0 , based on some recomendations in this forum.
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Feb 18, 2013
The problem is basically that my home wifi runs from a router that renews its IP adress every hour or so, and I keep getting disconnected from the Internet for 15 mins. or so every single time and then again not always; sometimes a page fails to load and then the connection is re-established a moment afterwards - it's very random.
The odd thing is that while my desktop Pc gets disconnected for long peiods of time my PS3, phone and laptop all seem to be able to reconnect during other periods of time where the desktop is unable. Also my parents and sister seem to be disturbed in different intervals. This makes me think that besides the annoying short disconnection on every device, my wifi adapter might cause the desktop additional problems reconnecting.
I'm using a Netgear WG111 v3 adapter. I should probably note that when I was running Windows 7 it already gave me trouble installing drivers and I had to run compatibility mode for Vista, and now with Windows 8 Pro 64-bit I had even more trouble, installer crashing and me having to manually go to the Device Manager and search for the install data for the driver. It's only been causing me problems since I bought it and though it works as I write this there is no way for me to know if it goes offline again or not in the next second.
I've recently reformatted my Pc and that didn't change a thing in this context and I've also been in contact with my Internet provider (the largest of such in Denmark, where I live), and they are the ones that told me that the router needs to reaquire a new IP every now and then for security reasons.
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Jul 29, 2011
My computer is a desktop in a differet part of the house, away from the main computer. My computer is hooked up with an AE1000 Wireless USB. This USB is wirelessly connected to a Netgear Extender (Repeater) for a better signal strength. This Repeater is wirelessly connected to the router on the other side of the house, plugged into the main computer.
So my problem is, when im working on my computer or gaming on my free time, it randomly disconnects. My signal has a (!) inside of a triangle at the bottom right of my screen. I run the automatic troubleshoot on my Win 7, and it says either "DNS server not responding" or "Your computer is working properly, but some of your devices are not responding". Other times it works just fine and i run troubleshoot alot and it doesnt find a problem. Some days its running at 144 Mbps others 6.5...
I have checked that all of the devices are uptodate. .I've contacted GeekSquad and they said there was no problem. But obviously for them to connect to my computer the wireless has to be working, so they didnt find anything because it worked for the time being.I'm just woundering are there any capability issues with my wireless? Or any other problems im not aware of?
From Cable>Modem>MainComp>Router(Cisco)>NetGear (Repeater)>Cisco AE1000 Wireless USB>My Comp.
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Jun 18, 2012
I have two routers, a Telkom Mega 100WR and a Belkin F6D4630-4 v2. First I used the Mega 100WR and it randomly disconnected, then Belkin (which is new) and that too randomly disconnected. The funny thing is, both of them use to work.
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Aug 12, 2012
I know that the 3600 series APs are not supported on the 4404 WLC. However, would the following scenario be supported? I would like to use the 4404 (software rel. 7.0) as a guest anchor with a 5508 (software release 7.2) as the foreign controller supporting series 3600 APs. I ask because the APs do not need to join the guest anchor.
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Jun 2, 2013
We have a customer that have 2 5508 as primary and backup controller and a 4400 as an anchor controller. We plan to upgrade the 5508 to 7.3.112.0 and the 4400 is already 7.0.116.0. Will there be any issue if the anchor controller is not the same code as the foreign controller? Do I also have to upgrade the acnhor controller to 7.0.240.0?
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May 29, 2013
I have a Cisco 4402 Wireless LAN Controller and 4 x AIR-LAP1131AG-A-K9 access points.We run a combination of [WPA +WPA2]Auth(802.1x) as well as [WPA2]Auth(PSK), most people have their own login credentials...The primary client devices are MacBooks and iPhones, with some Windows and other mobile manufacturer being the minority.
The Issue I have one user (using a recent MacBook Air, latest OS, using Auth(802.1X) ), that keeps getting disconnected for no apparent reason, the user account has been setup exactly the same as every other user and his laptop doesn't have this issue when connected to other WiFi networks.It's worth noting: I noticed this particular user has a lot of "Decrypt Failed" (currently 213) associated with his MAC address, no other user on our network has a single "Decrypt Failed" associated with their MAC...
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Nov 27, 2012
We have WLC 5508 installed in our premises to which 80 1242AG APs are connected. Few days ago, all the APs all of a sudden disconnected from Controller and rejoined after 12 to 15 hours. when we try to investigate, there was regulatory domain conflict occur. But we didn't understand that those APs were configured with the same config before. How come they got diconnected and now rejoined without changing any configration in WLC?
Logs for both AP and WLC has been attahched here.
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Jul 6, 2012
I have WLC 5508 and 18 1242 APs are connected to WLC. I am getting following error messages in all APs.
*Jul 3 02:53:18.263: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to reset
*Jul 3 02:53:18.320: %LINK-3-UPDOWN: Interface Dot11Radio1, changed state to up
*Jul 3 02:53:18.326: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to
[Code]......
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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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Nov 16, 2011
As the thread title says, I just want to gain better understanding by practising the config.
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Aug 2, 2011
I've download a login.html into the controller successfully, but when I preview the page there isn't an accept button. Do I need to create the accept button with the html file or is there some place I need to enable on the controller itself. After download the .tar file I reboot the controller but no luck. I also create a java script button redirect but it didn't redirect to where I needed to go. It just stuck on the splash page.
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Mar 3, 2013
I have new 1600 series Access Points. I am trying to join those APs on controller but unable to join.
After doing config reset using mode button, I was able to join only. Please find the logs or error messages below:
*Mar 4 18:53:13.999: %DTLS-5-SEND_ALERT: Send FATAL : Close notify Alert to 10.2.241.50:5246
*Mar 4 18:53:14.063: %LWAPP-3-CLIENTERRORLOG: LWAPP LED Init: incorrect led state 255
*Mar 4 18:53:14.079: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to administratively down
*Mar 4 18:53:14.123: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
[Code] ....
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Apr 29, 2012
We have a mix of 1231 and 1242 access points in an LWAPP environment. They are connected to WiSM controllers in our 6509's and are managed by a central WLC. Everything is running version 7.0.230. My question is can I apply MAC address filtering on a select group of AP's to restrict access to a specific SSID broadcast on these AP's without affecting other AP's also connected to the same WiSM?
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Apr 17, 2012
I have a customer whom has six LAP1131AG-K9 but no controller and they are interested in one of the new 2500 series, specifically a AIR-CT2504-5-K9 with a 5 AP add-on license to bring total AP capacity to 10. I can't determine clearly if this controller will work for these older AP's prior to them making the jump to 802.11n via the 3500 or 3600 series, looking to the community to confirm.
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Oct 4, 2011
We have 4 1142N LAPs that I want to divide between an internal wireless and a guest wireless network using the controller. Currently all of the APs are on an established internal network, but I want to migrate one over to a test guest network before buying more LAPs to augment the networks further. Currently the port connecting to the WCS from the 3560 switch is configured as an access port using VLAN 10. Whenever I make it a trunk port carrying VLAN 10 as well as the other ports we will be using for the guest and ap-manager networks, I lose connection with the controller. To me this implies that the port on the controller is configured as an access port as well. In the documentation I found for the controller it states that by default the ports are al configured to be trunks, but it appears as though something was changed by the previous tech. All of the APs are connected to other switches, not to the controller itself.
1) How can I get the port on the controller back to being a trunk port
2) Can I use the internal DHCP server for the guest network if the subnet is different than the management subnet, or will I have to use another external server and relay/proxy it through the controller to give guest clients IP addresses?
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Jul 5, 2011
The Release Notes for 7.0.116.0 of WLC 5500 has a table which title is "Client Type", and it shows wireless adapters. My question is,
what kind of customer means? Wireless clients or clients for an specific application? If it was the first option, does it mean tha just this adapters could connect to my wireless network?
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Apr 21, 2013
Looking for some training on the 2500 series controller and 1142 or 1040 AP's preferably.
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Mar 7, 2012
I am using guest solution with two WLCs , one inside and one as anchor in DMZ.we have also NAC guest server to authenticate the guest users. inside WLC is 5508 and had been updated to latest version 7.2.103.0 last Thursday.
now we facing problem with the guest SSID , after the user authenticate, immediately disconnected and to access again he has to authenticate again and so on.
Is there any Bug with the new version because the setup was working fine before upgrading.
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Dec 19, 2009
We are facing an issue with a customer where a Cisco 4400 Series controller is blocking the 802.11a/n Radio Interface of a 1250 AP. The radio shows as down on the controller GUI. The error message on the GUI is that the 'Regulatory Domain' is not supported. This can be seen from the attached screenshot. Also relevant parts of the WLC configs are attached. WLC: Cisco 4402 WirelessWLC Country: SADevice: Cisco Lightweight Access Point 1250 (LAP) is controlled through the 4402 Cisco Wireless LAN Controller (WLC)The operating system version of the LAP: c1250-k9w8-mx.124-18a.JA version of the WLC: Software Version 5.2.178.0 The problem is that the controller shows that the 802.11a/n Radio Interface in Radio Slot # 1 is always down , the customer tried to manually 'no shut' the AP interface from the console and it worked , but obviously this solution would not work as the configuration cannot be saved (LW AP).
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Mar 4, 2013
If the 2600 series access points are compatible with a 4404 controller running 7.0.235.3 code? I was looking for a compatibilty matrix for the AP to controller to code comparison but couldn't find one.
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Jul 22, 2012
I have an AP group on a Cisco 5508 WLAN controller. Currently, it is populated with 13 Cisco 1142 lightweight access points. When I try to add a Cisco 3602i access point to the group, I get the following error in NCS: Error: OfficeExtend requires primary, secondary, or tertiary controller management IP to be set.I am using DNS to allow my AP's to find the controller and they work just fine. Is there a reason I can't add the 3600 series AP's to the AP group?
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Mar 26, 2013
I have a 5508 controller with a bunch of 3600 Series APs. I did all the basic config on the controller and added all the APs through distribution port #1. Now I was trying to config a second interface ( port #2) and use it for the Guest SSID on a separate VLAN. After I rebooted the controller, it dumped all the APs. I would like to know if this is normal, If I need to enroll the APs everytime I reboot the controller.
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May 20, 2012
I recently upgraded our controllers to the latest version 7 software, as I read this was one of the requirements to get them to connect. But I am not having any luck getting into a controller. Normally I plug them in to the network, they pop into the controller listed as something like AP5057.a844.xxxx and then I can finish configuring them, but a static IP on them, etc. This is the first of this model AP I have tried to deploy, so I am wondering what is different with these. or what I might be missing in the default config in the WLAN controllers. Niether of which are set to "Master" either.
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Apr 21, 2013
I want to use a 5508 as an anchor controller for a wireless guest deployment....but the client has internal 4402's controllers, with software version 7.0.235.0...is it possible tu mix these two controllers for a Wireless Guest Access Deployment??
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Oct 2, 2012
A wlan on my controller is configured for WPA2, AES encryption and a PSK. A vendor will supply me with a wireless device for this wlan. The vendor asks if we use AES 128 or AES 256. I had always believed we use AES256 but I can't verify this. How can I verify this to the vendor?
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Mar 21, 2011
Seems that all solutions are null and void for us because we are not using SNMP v3 or H.
We are using SNMP v2, We have upgraded our WCS to latest version as well as the controllers. I have 6 controllers currently added although they are on WiSM blades.
We are unable to add the 5508 Controllers, we keep recieving this error -
No response from device, check SNMP communities, version or network for issues.
I have confirmed all connectivity is working, even with a debug on the controller you can see it sending SNMP packets to the WCS, although still same error.
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