I'm having a problem with my clients dropping the network connection constantly throughout the campus. I am using a Cisco 5508 controller and the APs are LAP1141N. At first I thought it was a roaming issue but I tested with only 1 AP and the problem persisted, I can tell you that we don't have interference problems and that our old linksys APs used to work without flaws.
View 1 RepliesBasically i got a belkin(on a tight bufdget) wireless n modem(f548633) last week. and when i first set it up it was fine except it disconnectiong everytime ia setting was changed on it and taking ages to reconnect to it.
anyway in the last 2 days its started dropping connections to anyone using the wireless. thing is it doesn't completely disconnect it just goes down to around 5kb transfer but when trying to acces the router through IP it doesn't load unless i disconnect and reconnect. i could deal with this at first as it was once every few hours but now its happening every 5 minutes. i plan on sending it back but thought i'd have one last ditch effort at working this out. my security log shows alot of ACK sends to my IP.
02/07/2011 23:26:08 sending ACK to 192.168.2.4
02/07/2011 23:26:08 sending ACK to 192.168.2.8
02/07/2011 23:10:15 sending ACK to 192.168.2.8
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I have 3 AP541Ns setup in a small environment. The wireless clients use laptops to attach, via RDP, to a Microsoft Terminal Server. They need the ability to walk, with laptop, from room to room, IE roaming wireless clients. The issue is the clients drop and re-attach constantly and takes up to 5 minutes to re-attach to the WLAN / RDP session. Is this a symptom of going from WAP to WAP and is their anything I can do about it.
View 2 Replies View RelatedFor 2 year now we have been running aironet 1240ag access points throught our warehouse. We use a telnet session on our handheld scanners to connect to our database on the main server.This last week our scanners started getting dropped from the access points serveral times throught the day and often would continue to get dropped at 1 minute intervals for several minutes at a time. This appears to be happening on all of our access points and is affecting all of our scanners but not at the same time.Each time a clinet is dropped we get the following event log on the AP.
Sep 29 11:57:14.807 -0500 Warning Packet to client 0c77.1a3a.6ff7 reached max retries, removing the client
Sep 29 11:57:14.800 -0500 Information Interface Dot11Radio0, Deauthenticating Station 0c77.1a3a.6ff7 Reason: Previous authentication no longer valid
All the AP's are setup the same with the below config
!! Last configuration change at 14:24:18 -0500 Sat Sep 29 2012 by Cisco! NVRAM config last updated at 14:24:18 -0500 Sat Sep 29 2012 by Cisco!version 12.4no service padservice timestamps debug datetime msecservice timestamps log datetime msec localtime show-timezoneservice password-encryption!hostname AP_10!enable secret 5 $1$lcac$OO/IqOlgR2.TPP/BFg7nX1!no aaa new-modelclock timezone -0500 -5!!dot11 syslogdot11 activity-timeout unknown default 128dot11 activity-timeout client default 128dot11 activity-timeout repeater default 128dot11 activity-timeout workgroup-bridge default 128dot11 activity-timeout bridge default 128!dot11 ssid jefferson377 authentication open guest-mode infrastructure-ssid optional!power inline negotiation injector 9caf.ca01.d818power inline negotiation prestandard source!!username Cisco privilege 15
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I have several wired and wireless devices connected to the router which is running the latest firmware (2.0.2.1) and I have this issue with all wireless devices. The router is configured for B/G/N Mixed, Channel 6, and to broadcast the SSID. Security Mode is WPA2-Personal w/ key renewal set to 3600. Connection control is configured to allow only the desired MAC addresses. All wireless clients are configured for DHCP (as are some of the wired clients that do not have this issue). I have tried various setting changes over time, none of which have resolved the issue.
What I have determined, and may be useful, is that each time this occurs I am unable to ping the router from the client and have no connectivity to the internet or other devices on the network. If I ping the WAP address (reserved for internal use address) I get a response and then connectivity is always restored after doing so. In other words, I ping 192.168.1.1 and get no response, immediately ping 192.168.1.2 and get a response, then immediately ping 192.168.1.1 and now get a response and connectivity is restored. If I skip the first step and just ping the reserved address followed by the router address result is always the same. It would appear the issue is between the the two router addresses.
Prior to owning this router I had a Linksys BEFSX41 that I had for about 7-8 years and a WAP54G I had for about 5, both of which still worked and I never had this issue with my wireless clients. I went to this router for the increased performance and am very happy with that aspect, however this issue is unacceptable.
I have 2 AP541N's set up using a WDS bridge, broadcasting a single SSID. I am using WPA-PSK for the bridge and WPA/ WPA2 and CCMP (AES) on the SSID. I only have around 75 (Mac, PC, iPad, iPhone and Android) devices that use wireless. Some are laptops that roam around from AP to AP, and are using LAN when they are not roaming. I have increased the roaming agressiveness on PC clients and this doesn't seem to have resolved the weak connection. At most, I have 50 clients trying to access the wireless at one time. My problem is that they keep on dropping the connections and have real problems reconnecting once it's dropped. After 4 or 5 tries, they may or not be able to reconnect.
View 1 Replies View RelatedI've got a DIR-651 that does one of two things regularly:
1--drops all wireless connections momentarily, then re-establishes them (happens multiple times a day)
2--drops all wireless connections and has to be reset (happens every 0.5-2 days)
#1 wouldn't be a big deal, except that I keep VPN connections on two systems and have to re-establish them every time this happens. I should probably also note that this happens even on the weekends, when those two systems are not VPN'd in.
It has done this since day 1, and the firmware update did not work.
What HW version is your router? A1 What FW version is currently loaded? 1.01NA
What ISP Service do you have? Cable What ISP Modem do you have? Stand Alone What ISP Modem make and model do you have? Scientific Atlanta 2203C
Ensure DNS IP addresses are being filled in under Setup/Internet/Manual? done Turn off QoS options. done Turn off Advanced DNS Services if you have this option. done Turn on DNS Relay under Setup/Networking. done Setup DHCP reserved IP addresses for all devices on the router. done Ensure devices are set to auto obtain an IP address. done Set Firewall settings to Endpoint Independent for TCP and UDP. done
What wireless modes are you using? mixed B/G What security mode are you using? WPA-Personal What wireless devices do you have connected? 3 laptops, 1 desktop, 2 Blackberries, 1 printer Any cordless house phones? yes, DECT 6.0. Did not interfere with previous Netgear or 2Wire routers. Any other WiFi routers in the area? up to 5 others, but they are all far away and my house has thick stone exterior walls
I have recently setup one stand alone aironet 1140 with mostly default settings with WPA key. but, it seems sometimes it's dropping the connections. hardly 15 users are connecting to aironet at the moment.
View 2 Replies View RelatedWe have with AP541N-E-K9 on the latest firmware.
Our AP541N-E-K9 keeps dropping all WLAN connections and will not allow us to connect via WIFI. I have to switch the unit off and on but even so sometimes it will take 10 mins for the WLAN to accept new connections. Nothing has changed on the network for months as it is a very basic scenario ie Draytek DSL Router -> Cat5e cable -> AP541N-E-K9, thats it! The AP is really only used for guest access and may have about 15 staff connected via WIFI at any one time.
After 5 years of services my DIR-655 begun acting up yesterday; first of it begun by getting REALLY slow, it could take up to 25 seconds to login into the software and up to 30+ seconds just going from one menu to another, on some instances connection (wired) to the router was lost. This morning it started dropping all connections, wired or not; first my iphone then my WDTV, after that it's been pretty much random connections. On one given moment wired works but not wireless, then wireless works but not wired and sometimes I get both but for 3 or 4 minutes.I've reset the router to factory settings, plugged/unplugged, changed cables, network adapters on desktops and the problem persists.
DIR-655 A2
FW: 1.35
Connection: ADSL
I have configured 5508 with multiple APs but clients on the internal SSID aren't getting an IP address. I have the IP helper address configured and I have also disabled DHCP proxy on the controller.
I get the following from the client debug, I don't know what the below mac address is, it's not one my APs or the clients, I am not seeing this mac address on the controller at all but it shows up in the debug.
type = Airespace AP - Learn IP address
on AP 6c:9c:ed:87:23:c0
*Dot1x_NW_MsgTask_0: Nov 25 16:14:17.579: 08:11:96:20:94:28 Entering Backend
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I have a Linksys E900 router that seems to drop connections all the time. When I look at the status page, all the IP4 information is gone.
View 1 Replies View Relatedmy e4200 updated with latest 1.00.1 firmware is constantly dropping connections from the outside to existant lan servers running low traffic services when my machine is using torrent or internet gaming.( call of duty modern warfare )
View 9 Replies View RelatedI have a new EA 6500 and it works OK but ever few days it drops all connections. If I reset the router it will start working property but a few hours or a few days later it will drop all connections again. I have installed the latest firmware. Unless there is a fix I plan to return the router to linksys.
View 3 Replies View RelatedWRVS4400N with firmware version V2.0.0.8.
After about an hour it routinely drops wireless clients. Wired clients are fine.
Re initiating a connection from the clients usually restores the connection fine. Sometimes this is just doing something to force the client to use the connection for some active function other times it's forcing the client to renew it's DHCP address or power cycling the client. The same experience is happening with a TioVo on WiFi, an iPhone on WiFi, and a WAP4410N in Client Bridge mode.
While this may not sound that bad, it's creating 2 huge issues that shouldn't occur.
First, the wireless clients that are dropped are not accessible from other clients on the network until they reestablish their connection. There is no indication on the client of an issue with the connection. For example, a TiVo connected over WiFi isn't accessible from the network until it reestablishes it's connection. It works fine then for a hour or so.
Second, for the WAP4410N (firmware 2.0.3.3) in Client Bridge mode, this client requires a power cycle to reconnect to the network. In much less than an hour it stops responding to it's IP address for it's management page, but continues to pass traffic from the multiple wired items it's bridging. Then, after about that same hour, it stops passing this traffic too.
I tried running the WAP4410N in WDS Bridge mode but was unable to get it to work. For this testing, access to the management page was the test with no devices behind it. So, it's possible that that access is what was broken and that it may have passed traffic. No wireless clients need to connect to the WAP4410N, just the bridged wired clients.
This WAP4410N was previously acting as a brige to a WRT54G with no issues, but at G speeds. Which makes me think it's an issue with the WRVS4400N dropping clients and the clients not knowing it.
I have a 5508 WLC with CAP3502i APs connected to it. I upgreaded the code to the newest 7.2.115.1 code. I am having trouble with laptops that are not physically moving but are moving their connection from AP to AP in the same area. This is in a school and causing a problem with a testing program they are using becuse they drop 2 or 3 pings in the process. I do have the area heavily saturated with AP but that is because of the amount of clients we have connecting to them. There is 8 classrooms in a hallway with 24 laptops in each classroom. Each classroom has an 3502i ap in it. The laptop can be connected to an AP with great signal and move to another AP that still has a good signal but not as great. I don't understand why if I get 4 bars and connected at 144mps it would move to a new AP. These are Lenovo laptos and i have updated their wireless card drivers and set the roaming agressiviness to low but it still happens.
View 3 Replies View RelatedI have a WLC 5508 with half a dozen LAPs (AIR-CAP3502I-E-K9).They have been working but sometimes clients detect conectivity problems with the wlan.Here is the message log I can obtain from the controller:
View 1 Replies View RelatedI have a WLC 5508 in my datacenter, and 1142s configured with FlexConnect at a remote site.Two issues:Some APs 'die' from time to time where I cannot ping them anymore and they do not service any clients. I can reset them from the WLC after which they work again. I have some clients in the building (same area) who lose connectivity from time to time and are unable to reconnect to the wireless. I am seeing errors that the gateway cannot be found or there is not a valid IP. restarting the AP closest to the clients fixes the issue. I have replaced the AP and connected to a different port on the switch.
View 6 Replies View RelatedWe have deployed a WLC 5508 w/ SW version 6.0.199.4, 1142 AP's & open authentication w/ MAC filtering. Clients are randomly getting dropped with "Limited Access" shown in Win 7. In this state, the client machine is unable to ping the gateway and sometimes lose their DHCP assigned IP as well. A manual disconnect/re-connect to the SSID is required everytime.I ran a debug on one the clients stuck in the "Limited Access" state (debug client xx:xx:xx:xx):
*Apr 15 16:59:23.205: e0:91:53:60:1f:e4 Adding mobile on LWAPP AP 3c:ce:73:c5:1e:b0(0)
*Apr 15 16:59:23.205: e0:91:53:60:1f:e4 Scheduling deletion of Mobile Station: (callerId: 23) in 5 seconds
*Apr 15 16:59:23.205: e0:91:53:60:1f:e4 apfProcessProbeReq (apf_80211.c:4722) Changing state for mobile e0:91:53:60:1f:e4 on AP 3c:ce:73:c5:1e:b0 from Idle to Probe
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We got a question about our WLC 5508 single controller deployment with 14 access points without a VLAN configuration.
When our clients connect to the wifi, we cannot see any ip address of them in the client details page. It shows everytime the ip address 0.0.0.0. The clients are configured with a static ip.
question in regards to the deployment of a new WLC and new LAPs,I have configured and connected a 5508 WLC and 3500 series LAP.LAG is enabled in the WLC and successfully connected to the neighboring switch (using etherchannel) and to the network.
The port-channel port is set to trunk mode obviously and certain vlan ids are currently allowed (3-5)
The management interface has this IP address 192.168.5.250/24
I created a WLAN with WLAN ID 3, Interface set to Management and say SSID test1
I have connected a new LAP to the network, which switchport interface is set to access mode and assigned with vlan id 3. The LAP is able to join the WLC successfully with an IP address, such as, 192.168.3.100 (assigned via DHCP).
When I try connecting a mobile client to the wireless LAN, it can successfully detect and connect to the WLAN, created in the WLC (test1) however it gets an IP address by DHCP, in the 192.168.5.0/24 network, which is the IP range of the management interface's IP address.
What can I do to get the clients connecting on network 192.168.3.0/24? I thought this would be the case since I allocated the WLAN Id of 3 in the WLAN test1 configuration and since the LAP switchport is set to access mode with vlan ID 3.
In the last three weeks I replaced a Linksys WRT54G wireless router with a new E2500. The only reason this was done because the store salesman indicated I should get much better performance over my router that was probably 5 years only.
Since the install I have had nothing but issues. I could never get on PC runing XP to connect. It worked one day and the next morning I could never get it to connect again. I even removed the encryption and went to WEP with no luck. My laptop that I loaded the software on and initially did the connection I didn't have an initial problem. The problem I now have is the wireless connection is constantly dropping. In the course of an hour the connection probably drops 3 to 4 times. If you leave the PC for several hours, you may need to sign of your user and resign in to get the wireless connection to work. This is an experiment gone bad. My old router never dropped a connection and every PC in the house stayed connected forever. This new router is located the same distance as my original one was, but is nothing but a series of failed connection.
I have gone through 2 of these routers now. The first time I was told I had a bad router so it was replaced. The problem is that it randomly disconnects all wireless devices. All I can do is wait for them to reconnect. I am very disappointed that I have not been able to find any solution to this problem. I have seen other posts for similar issuse but no resolution
View 2 Replies View RelatedI just installed a brand new e4200 replacing my WRT54.Wireless works good with a noticable performance improvement over my old wireless.However, the wired conenctions are not solid at all. I am getting over 10% packet loss from the wired conenctions.I can not even connecct to the web ui reliably over wired connections.I upgraded to the latest firmware release with no real change at all.
View 2 Replies View Relatedmy E4200 is dropping connections several times a day. I'd be working on my laptop, go to a webpage and bang, no connection. A minute or so later it would reconnect. It even appears to be doing this with a computer that is hardwired to one of the ports. So it doesn't seem limited to just wireless. Happens to both N and g channels as well.
View 9 Replies View RelatedSet channel manually - i've tried all the channels no luck
Different SSIDs for 5g and 2.4g
Beacon Interval 50
Fragmentation threshold 2306
RTS Threshold 2304
I'm running firmware 1.0.04 build 6 <script type="text/javascript"></script> Dec 6, 2010?I've had the router for 4 months now and this has been happening for the last 3.
I have a brand new EA3500 (three months old) that has worked fine until recently. For some reason the wireless keeps dropping all connections every few minutes. I have checked the internet connection and that is not it as I can be hardwired to the router and the internet never drops. This happens to every device in the house (two Xbox, tablet, multiple PC's) at the same time, or randomly between. The devices are a mix of G and N so it is not associated with just one particular band. I have verified the wireless phone, microwave, or anything else that might interfere with the signal is running. One thing I have noticed is that when the wireless connection drops, the actual signal does not go away, I can still see it with a wifi analyzer. This is very frustrating as I just replaced a previous Linksys router with this one for the very same reason. Perhaps I should have bought some other manufacture.
View 4 Replies View RelatedWe have a Cisco 5508 controller with 1142 LWAP's running version 7.4.100.We have several Dell laptops which will not associate to the access point UNLESS you stand directly underneath it, power off the wireless, turn it back on then eventually the PC will associate to the AP.Once the PC is associated to the AP and user is authenticated then all is well.
Have tried updating the wireless drivers downloaded from both Dell or INTEL. This does not happen to all of our laptops. However, without making any changes to the WLC or the PC's, we have begun to expirence this problem with laptop which previously did not have this issue.
For WLC 5508 software version 7.0.235.0, which command is needed to get the WLC send syslog messages everytime a wireless client associate and desassociate?
View 2 Replies View RelatedI'm working on migrating autonomous WAPs to lightweight mode in a WLC 5508. Some of the older WAPs are being decommissioned at the same time.
One issue I have found is that after replacing an old WAP in autonomous mode with a new WAP (3502); some clients near the coverage of this new LWAPP are now connecting to another WAP in autonomous mode that has not been converted or replaced yet; but that is located quite far away from where these clients are, actually two floors down. Users on these clients have reported wifi dropouts, which is obvious due to the distance where the old WAP is. A workaround that seems to work is removing the wifi profiles in the client machines and recreating them again, which is not a good solution for all of the wifi profiles we have in place. At this point of time we still need to have the older WAPs until they are all replaced.
How can I get clients connecting to a LWAPP that is closer to their location? I'm wondering what causes those clients to look for an existing older WAP rather than connecting to the new LWAPP, which is broadcasting the same SSID closer to where they aree. Bear in mind that the new LWAPP is working fine and has live sessions working just fine.
Upgraded to 1.0.04 from .03 and caused some problems. Worked great at first-upgrade was flawless-no problems there. THen it started dropping wireless connections. THen no wireless or wired connections. COuld not pull an IP address.Pulled power to router couple times and it worked great at first again then degraded like before.Held reset button for 5 secs to reset to factory defaults, now the setup display is missing all the html coding-no menu list. All in raw format.Am connected to port 1 via cat 5 to my laptop with no connections except the internet connection to the cable modem. Something has gone really wrong with my .04 software.Tried to find the .03 version, but the zip file is HUGE. Whats in it anyway?
View 1 Replies View RelatedOur 5508 Wireless Controller will drop MAC addresses clean out of the system. Addresses that are in use everyday just disappear. It is not a limitation issue because we are adding iPads everyday. And it is not a daily occurance, but maybe once or twice a week. Everything has been updated and it is more of a hassle than anything, I am just trying to understand what is happening.
View 2 Replies View RelatedJust inserted a new 5508 WLC into the network. We current have 3 4404 WLCs, and there was a need to duplicate, as much as possible, the configurations on the 4404s, and the design. The 5508 came online as expected. We moved a few access points over to it. The APs got the correct address range. The clients are expected to get addresses in the same scope range as the APs. However, the clients are receiving addresses in the management IP scope.I know there are two "not a good way to do it" in here. Why is the management address range in the DHCP scope, and why are the clients using the same scope as the APs. We are going to change that. For now, the AP and client in the same range has been going on since we rolled out wireless in 2006.The 8 ports on the 5508 are configured for LAG. There is no dedicated port for management. They tell me not to do that on a 5508.
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