Cisco Wireless :: 5100 / 6200 - Intel Chipset Clients Random Citrix Disconnects
Apr 24, 2012
Currently using intel 5100 & 6200 client cards on multiple driver versions. WiSM is 7.0.116. APs are 1250 and 1260 series. Citrix is setup to send server-side keepalives for session reliability. Randomly, several times a day the client will get disconnected from the Citrix application session but maintain connectivity to the AP and other applications continue to work. Traces show the server-side keepalive reach the controller but are delayed from controller to client by 5-6 seconds. Just enough time for the Citrix server to timeout and tear down to session. Additional testing shows the delay most likely occurs somewhere from controller to AP. It occurs on multiple controllers on multiple campuses.
We have Dell/Broadcom clients that don't experience the problem. The only commonality seems to be the Intel cards. CCX? I know Intel has a special relationship with Cisco regarding CCX and have developed features not available on other cards. Tried disabling power save and other CCX features but hasn't solved the issue.
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Mar 4, 2011
I'm running Win7 on a Lenovo x200. Has run fine for a year. Lately the wireless card disconnects and the system shows no available card. Have to reboot to reconnectThe card is an Intel 5100 AGN. Have tried uninstalling all software and reinstalling latest drivers from Intel and Lenovo. Have tweaked power saving controls, and tried about every suggestion out there. But the problem persists.
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Sep 1, 2012
I can´t connect to wifi because it simply doesn't read my wireless network card, I can only connect by an ethernet cable. I've tried to see if it appears in the device manager but it doesn't..
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May 9, 2012
I have just fitted a centrino 6200 half mini card in an attempt to improve wireless conectivity and more so range
I assume that it would come up as new hardware found and then run the driver to get it to work. When fitted it doesnt appear in device manager and when trying to run driver the driver just runs then stops
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Sep 19, 2012
I have a Intel Wifi Link 5100 AGN wireless card that isn't working properly. It will connect at first, then the connection is dropped. This started happening gradually, then became more and more frequent. I tried reformatting my computer, and this still is happening. When I use a wireless USB adapter, the computer has no problems using the wifi.
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Feb 11, 2013
My Intel(R) Wifi Link 5100 AGN wireless adapter does not recognize network connections. I corresponded with Intel, after updating drivers etc., the tech concluded that I probably need a new adapter. I have a Studio 1555(1550?). I would like to purchase a USB adapter.
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Mar 5, 2011
Lenovo X200 running Windows 7. Intel 5100 AGN wireless card. Connection has worked fine for more than a year, but lately disconnects frequently and won't engage again without rebooting. Card not identified by system after connection drops.
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Mar 29, 2011
After trying to communicate between an XP machine and Win7 using static IP and a crossover cable my wireless card stopped working. I did make the mistake of trying Homegroups prior to that.
It says Unidentified network and constantly remains in the Public Profile. Not even WiFi Sync is working...diagnostics reveal a problem with the drivers though several have been tried. From the originals to the latest version...Properties describe the device is working normally?
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Jun 18, 2012
I bought my Dell XPS 1640 in 2009, as wireless connection card I have an intel Wifi link 5100 AGN. This card worked properly till last week all of a sudden i got unexpected DC's and all this requierd me to restart the PC 4-5 times to get 5 minutes of internet.
I know this is a known issue and it occures on random times according to the forum mentioned below url...
My question is is there a new line of cards for my laptop which DON'T have any reports about this?
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Jan 13, 2013
I recently lost network connection using the built-in Intel(R) WiFi Link 5100 AGN. Stupidly, this happened while I was still under a Service Contract, but due to the holidays, I put it off and the contract expired the middle of December. I have a Studio 17/1745, I disconnected the internal WI-fi card and use a USB D-Link N and I now have WI-fi. Should I purchase a new internal WiFi card and if so which one.
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May 12, 2010
I have studio 1737, With my Intel WiFi 5100 AGN. I also instaslled latest drivers but when i want to scan for any wireless network it says adapter not found.
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May 13, 2013
Host Name: BOBOS Name: Microsoft Windows 7 Home Premium OS Version: 6.1.7601 Service Pack 1 Build 7601OS Manufacturer: Microsoft CorporationOS Configuration: Standalone WorkstationOS Build Type: Multiprocessor FreeRegistered Owner: Registered Organization:Product ID: Original Install Date: 27/11/2009, 10:18:51 PMSystem Boot Time: 6/05/2013, 7:51:57 PMSystem Manufacturer: Dell Inc.System Model: Studio 1745System Type: x64-based PCProcessor(s): 1 Processor(s) Installed. [01]: Intel64 Family 6 Model 23 Stepping 10 GenuineIntel ~2801 MhzBIOS Version: Dell Inc. A04, 22/03/2011Windows Directory: C:WindowsSystem Directory: C:Windowssystem32Boot Device: DeviceHarddiskVolume2System Locale: en-au;English (Australia)Input Locale: en-us;English (United States)Time Zone: (UTC+10:00) Canberra, Melbourne, SydneyTotal Physical Memory: 4,091 MBAvailable Physical Memory: [Code]....
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Jul 19, 2012
I've had this problem for a while. I'd only get a dial-up icon with a red cross after startup or diagnostics, and no wireless networks could be detected. So I installed the HP wireless assistant, and restarted the laptop. It started working fine. Today, the icon went yellow with limited access, so I ran troubleshooting. And the problem was back. The dial-up icon reappeared, and the wireless assistant showed the WLAN was disabled. I checked the device manager. The wifi link 5100 AGN had a yellow mark on it, and in properties tab, it said ' the device is not working '. I scanned for hardware changes, and the 5100 AGN disappeared ! I restarted my laptop, and now its nowhere to be seen. Even the wireless assistant now shows only 'Bluetooth' as a connection.
I have an HP HDX16 1140us laptop.
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Jul 10, 2013
Mine studio 1555 with intel core 2 duo P8700 [URL] processor and intel wifi 5100 agn card stopped connecting to router since last week. After searching a lot I found out that the Intel has stopped supporting 5100 for windows 8. Is there any way possible to use the same adapter with compatibility drivers on windows 8?? I have searched a lot but couldn't find much. All the new intel cards like "Intel Centrino Wireless-N 2200", n6300 are of 22nm while my processor is of 45nm. So will the newer card work with my processor.
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May 17, 2012
I have a Lenovo T420 with a Intel Centrino Advanced-N 6205 wireless network card that causes me some headache. It randomly gets disconnected from my router (Zyxel P-2601HN-F1) and home network, works fine though if i using cable. Right after it gets disconnected it reconnects and works fine until it gets disconnected again. I have an HP laptop connected at the same time and no problems there.It works fine in the network in our office (work laptop). I tried our IT dept but they were clueless and told me I had to figure it out by myself, as it works in the office..
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Jul 28, 2011
I see that many people have the same problem, random disconnects. I am a long term sufferer from this. I have called support before they can't fix it. and being knowledgeable with routers has not worked at all. I turned off every wireless device in the house, even the microwave it still happens. I change the channel countless times it still happens.
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Oct 14, 2011
I check all of the settings and changed the channel to see if it works. For some reason it disconnects my wireless internet at random times and i know before it never use to do that before with a older router. There is nothing blocking it, it worked before, and my computers can connect except two. The only thing i can guess is my wireless card.
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Jul 31, 2012
I have this laptop with a built-in Intel Centrino Advanced-N + Wimax 6250 adapter to connect to WiMAX.Right now I have a WiMAX connection at home with a simple gateway. So what I want to do right now is trying to connect to this network using my built-in adapter.I'm facing right now is that the driver of the adapter only searchs for a certain provider from the US (Clear). I'd like to subscribe to their service but I live in Argentina so that's not a valid option. So my question is if you know of a custom driver or some other way to search for my local wimax network.
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Jul 24, 2011
I just recently (4 days ago) purchased an E3200 router. I noticed some random disconnects on my devices using the 2.4GHz frequency.I installed inSSIDer from MetaGeek to see what was going on and noticed some strange behavior where the Amplitude on the 2.4GHz randomly drops dramatically. Sometimes its once every 10 minutes, other times it happens 5 times in one minute. I can't figure out what is the cause. The 5GHz signal is steady as a rock.
What I tried so far: Set the Channel to the least crowded channel instead of auto, upgraded the firmware, restarted the router all to no avail. This is annoying to say the least. It doesn't affect anything unless you are playing video games or running a remote desktop session, where a single disconnect is disastrous. I just upgraded from an old linksys wrt54g, tried a netgear n600 which was terrible, then swapped it out for the Cisco E3200..
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Aug 12, 2012
Recently I've been experiencing random disconnects.
My setup is a Actiontec Q1000 with (QAQ002-31.20L.4) modem/router that talks to qwest. Then I connect to a linksys router WRT54G2. I connect directly to the linksys router with an ethernet cable, but my family connects to it wirelessly.
I ran a constant ping to my modem and to google, and on the random disconnect, the Actiontec Q1000 gets a huge 4000ms response time (but then it resumes normally), and I get ping timeouts to google. Windows 7 will say "no internet connection available". Not sure if it makes a difference, but I had google timeout 4 times during my constant pings.
Nobody else is connected when it does this random disconnects, so I'm not sure what's causing it. I've tried a lot of things, from changing and flushing my dns, connecting directly to the modem, turning off QoS/firewall settings, but nothing seems to work.
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Nov 2, 2012
I just moved to a new rural city and Centurylink DSL is the only option for internet. I just had it installed on Monday and have had problems immediately. The two main problems are this:1) My computer is connected wirelessly but cannot seem to connect my mobile devices. My phone and my Google Nexus both try to obtain IP address and then immediately disconnect and try to reconnect over and over. Strangely my Kindle Fire didn't seem to have a problem.) I've found that when I am playing a game (Team Fortress 2 and World of Warcraft) and sometimes even watching a video on youtube, I will lose connection and get booted from my game or have to restart the video. The lights on the modem don't change and the modem itself does not disconnect or reboot. I seem to have internet service immediately after, but I get a hiccup probably once every 10 minutes that makes games unplayable
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Mar 2, 2013
recently upgraded most of my computer parts and reformatted from windows 7 enterprise 32bit to win7 enterprise 64bit. (all of this happened in a computer store) I never had internet problems before the reformat, however it has happened to me before when I had previous, newly reformats on my pc which usually goes away after 2-3 months. here is the problem, the internet is fine when I start using it and after an hour or two it will disconnect and when I troubleshoot it, it will just say "DNS server isn't responding" and what I do is turn the modem off and turn it back on and the internet will come back after 10-20 seconds. so basically my internet is fine and will just go down then to fix it I just have to turn the router off and on.
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Apr 18, 2011
We recently converted autonomous 1131APs to LWAP. We have some 802.11b clients that were associated to these APs and they worked fine. Ever since we converted them to LWAP, the clients frequently disassociate and it causes alarms on these wireless clients which are used as monitors.
WCS shows the client disassociation and re-association and it says the roam reason as "unspecified". It associates to the same AP and keeps the same DHCP client address etc. I tried setting a static IP on the client but that did not work. We verified the PSK settings and they all match between the clients and the controller. [code]
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Mar 11, 2012
I have a new deployment with a Cisco 5508-50 controller running 7.0.220.0 code and 35 AIR-LAP1262N-A-K9 access points. Current legacy clients have trouble connecting and after connecting they may or may not drop off and have trouble connecting again.
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Feb 20, 2012
Just today i've started having problems with my Wireless Network. Other adapters in my area are causing me to get random disconnects every few minutes.I've tried changing the channel on my router several times, but to no avail. Is there anything else worth trying?
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Jan 25, 2013
I have been having a high ping issue both via a cable and wireless. When i connect via wireless, it is generally 2 ms, sometimes goes up to 4 and 5 and rarely i get packet losses. Via a cable, i get usually 1 ms, and sometimes 2 ms. It generates a problem while online gaming and btw i tried changing channels and it didnt work. I even get same pings when i am 3 meters away from the router compared to less than 1 ms pings.
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Oct 30, 2011
I just recently purchased a D-Link 615 and i've been having disconnection issues with the internet. Every now and then the internet connection disconnects and i have to reboot the router to have internet access again.
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Jul 11, 2012
Recently I upgraded the wireless infrastructure in my campus and deployed WISM2 controllers and Cisco 3502i APs throughout the campus. Until now all my users were using 802.11b/g/a speeds without any issues. However, now I am trying to enable 802.11n speeds in a test group of users by enabling AES encryption and I am seeing lot of issues. These test users sporadically loose wifi connection and an asterix appears in the WIFI icon in the task bar. Interesting part is that all the manually configured wireless networks in the laptop stop displaying. The broadcasted SSIDs continue to show up though. All these users are using "Intel(R) Centrino(R) Advanced-N 6200 AGN" wireless cards with driver version 13.3.0.24. I had upgraded one of the client drivers to the latest 15.1 version. However, he still complained about wireless disconnection (I am not sure about this problem as I didnt personally attend his laptop to know the cause of diconnect).
One another interesting incident is that 2 people from this test group were having a meeting in a conference room once and surprisingly both dropped at the same time with the same symptoms. The only fix was to reboot their PCs.
I have done following changes in my controllers hoping that the problem would get fixed, But still no luck.
1. Enabled client band select.
2. Checked EDRRM for A as well as B/G
3. Changed Channel allocation from freeze to auto.
4. Enabled "avoid persistent interferers".
In my calls with Cisco support we also ran debugs in the controller and sniffer captures in the client machine. All we see in the controller is that the client dropped without any reasons. Also, didnt find anything significant in the sniffer captures. At this point not sure what to do. If upgrading the client driver is an option, then I need to produce some proof or document to the management which says the current 13.3.0.24 has known bugs to run 802.11n speeds. Scanned the entire internet, put a post in intel support site but no luck.
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Feb 11, 2013
Wired PC randomly disconnects from network at random intervals each dayoday it has done so 3 times. The only way I have found to get it working again is to reset the router which can be inconvenient. When it disconnects all wireless devices continue to work and I have no issues like this with my wired consolesI switched to using a static IP address, since having an automatic one gave me the same results [i have since switched back to automatic]Be happy for any suggestions on how to sort this. I am using W7 OS and I'm using an Orange router. I don't know if its relevant, but when I go to reset my router I have noticed that the download light on my router is flashing like crazy when my PC has disconnected.
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Aug 6, 2012
E4200 Version 2.0.37.131047 disconnects my wireless clients intermittently. I am seeing it mostly on the 5Ghz band but that is where most of my clients are connected. I have all the setting in advanced tweaked per cisco best practice. It just seems to reset every so often. Wired connection is not disconnected.
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Nov 19, 2012
Is there any solution for the usb wireless which its chipset is unknown when u do the airmon-ng
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Apr 15, 2011
I've been having some issues with my network connectivity for a while now, and I haven't been able to figure out what the problem is. I run a wired connection to an Ethernet port in the wall of my university dorm. I have verified that it is not a global network issue or an ISP issue; this problem only happens on my PC.My network connection drops/disconnects randomly throughout the day. When I say disconnect/drop, I mean that all attempts to ping or access the internet fail. A few minutes pass before the Network and Sharing center task tray icon shows a warning sign saying that my computer could not connect to the internet.This is temporarily fixed by doing an ipconfig /release and ipconfig /renew, but I have to execute these two commands about 2-3 times a day on average.
There is no exact interval between the disconnects, nor does it happen when I am running particular programs. The disconnect happens regardless of what I am doing at the moment (gaming, browsing the internet, leaving the computer idle).A month back, I installed some Windows Updates and suddenly my internet connection was almost completely broken. I was experiencing the same issue, but much more frequently. My internet would die within 10 seconds of executing any download, but Windows wouldn't recognize that something was wrong. At first I thought the ZoneAlarm, Avast!, or the SafeConnect (as required by my university) services were causing trouble but uninstalling/disabling these services did not fix the problem.I also tried reverting to my default ethernet drivers, which did nothing. I uninstalled and reinstalled multiple versions of my drivers to no avail.However, the internet worked just fine in Safe Mode with Networking, so I cross-referenced the processes/services running in Safe Mode w/ Networking against my normal startup, guessing something else was at play.After some poking around, I discovered that disabling the Server and Browser services permanently fixed the issue of instant connection death. But the initial problem I described still remains;random, less frequent internet connection drops.
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Feb 18, 2012
I am experiencing random disconnects from the internet -- they have been occurring about 1-3 times per day, although I've just had four in the last 20 minutes.
ISP: Wow! Cable - 15/1Mbps
Modem: Motorola SB6121 (new)
Router: D-Link DIR-655 (new) Firmware 2.00NA
When the internet disconnects:
- Both the LAN & the WAN are affected, but I do not lose any wireless connectivity with the router itself.
- I am able to log into the router wirelessly but cannot access the modem.
- If I plug my laptop directly into the modem, I can connect to the internet.
- When I reboot (using the on/off switch on the surge protector), everything comes back up.
There are a couple of other wireless routers nearby with fairly strong signals, but they appear to be running on different channels.
My phones are DECT 6.0, so there shouldn't be any interference problems with those.
I've been poking around this forum, and have already made some setting changes that seem to be consistently recommended:
- Ensured DNS IP addresses are being filled in under Setup/Internet/Manual
- Turned off ALL QoS (DIR only) GameFuel (DGL only and if ON.) options. Advanced/QoS or Gamefuel.
- Turned off Advanced DNS Services
- Turned on DNS Relay under Setup/Networking.
- Setup DHCP reserved IP addresses for all devices on the router.
- Ensured devices are set to auto obtain an IP address.
- Set Firewall settings to Endpoint Independent for TCP and UDP.
- Using mixed G and N signal mode
- My security setting is WPA-Personal. WPA2-PSK
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