Cisco Wireless :: AP541N-E-K9 Keeps Dropping All WLAN Connections
Apr 26, 2012
We 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.
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Mar 6, 2013
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.
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Jan 8, 2012
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.
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Feb 8, 2010
We have an AP541N that has been deployed to replace a Cisco 1200 AP (B/G radio). The 1200 functioned perfectly in our environment. The new AP541N on the other hand seems to work fine right after a reboot but immediately starts to degrade service. Over a short period of time, the devices bandwidth degrades to the point were the wireless network is not usable. This happens with just one device connected. Eventually, the device stops accepting client connections. We are unable to get any relevant logging out of the device to diagnose the problem.
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Aug 22, 2011
I'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
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Jan 22, 2012
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.
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Jun 4, 2012
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.
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Feb 8, 2013
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
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Feb 7, 2011
Basically 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
[Code].....
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Nov 30, 2012
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.
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Mar 16, 2011
my 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 )
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Dec 2, 2012
I 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.
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Sep 27, 2011
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.
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Mar 8, 2010
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
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Jan 23, 2012
I 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.
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Apr 11, 2011
my 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.
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Aug 4, 2011
Set 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.
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Sep 16, 2012
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.
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Sep 3, 2011
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?
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Mar 3, 2013
Region : Canada
Model : TL-WR1043ND
Hardware Version : V1
Firmware Version : 3.13.12 Build 120405 Rel.33996n
ISP : Bell
I'm having to reboot what is now my 2nd router every 1-2 days in order for all connections to resume working. My 2nd router was working great since Saturday afternoon, and just now I needed to reboot in order for my laptop to connect to the network.Now that it seems pretty clear the router in general isn't faulty, I suspected that the issue was IP lease related, so I was looking at DHCP settings and changed the lease time to 2880 (max setting), from 120 (default). However, this should only prolong how often i'll need to reboot the router. So, what is it that's causing my devices to disconnect or not being able to connect to the router for a prolonged period of time?
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Jan 10, 2011
I'm fairly new to the whole Cisco WLC system so this may be a more simple question than I realise.We are having an issue with some laptops dropping on and off the WLAN while sat on peoples desks not roaming anywhere. I can see that some APs have Load profile failed. Looking in the docs is says that client density may have been exceeded. The AP in question has 12 clients attached however I read that the 1130's should be able to handle 24 clients. Is there a setting on the WLC that limits each AP to 12 users? Also is there a way to identify the AP by making its light flash for example via the WLC?
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Oct 28, 2011
A lot of the time webpages hang up and don't load.. errors out etc.. I keep unplugging the router and plugging it back in and this makes it a ton better for a little while.. however.. I can play games like BF3 on 64 man servers and not lag/spike/disconnect or anything.. I am baffled as to why I am having such issues with web browsing
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Nov 23, 2011
I just set up a new DIR-601.Now, whenever I make a VPN or ssh connection, it gets dropped, always after about 3 minutes.
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Mar 13, 2013
I just recieved a new RV180 yesterday and it will not connect to my switch. Router was updated to the newest firmware, reset to factory settings. I did change the ip and ip range. Router works fine with one computer attached direct. As soon as I connect my sf300-24P to it, the WAN and LAN lights all light up and then go out. Only the WAN will light back up. I have no connectivity to the router. I plug the laptop to the router directly and no LAN lights come on and can not see the router with arp -a.
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Apr 25, 2012
I have my RVS-4000 configured using static IP addresses in the LAN configuration. The users use DHCP to get their addresses (for the most part, a couple may have static IPs set on the computer). I have the maximum number of DHCP users set to 1 to restrict the ability of people to log in to the system. That one address is locked down.
The internal address of the router is set to 182.168.2.1. It doesn't conflict with anything on my network. I have 35 static IPs. About half of them are uing IP Based ACL to limit their access time but that doesn't seem to bear any relationship to what drops off.
Almost daily one or more of the users will lose their IP address and a hard reset of the router is required. The user this happens to seems random and it may be more than one but seldom all of them. The network includes Windows7 (Home & Pro), a FreeNAS, Macs (Leopard and Snow Leopard), iPad, iPods, an iPhone and an AirPort Extreme used as a WAP (DHCP is disabled). The AirPort is plugged directly into the router and has a staic ip on the RVS-4000 but is set to DHCP. It seems to be the most common problem child.
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Aug 10, 2011
Model: WAP4410N-A V02
Firmware version: 2.0.3.3
Deployed 3 of these as WAPs. No repeaters. They are spaced at least 50 feet apart over three offices, each in a server or switch room.
Across multiple laptops, and multiple WAPS, the wireless will function fine for a while with good bandwidth..then the connection will simply drop. By simply resetting the connection on the laptop or turning the wireless off then on, the connection typically returns, at least for a period of time before it drops again.
I’ve tried these configured as three separate SSIDs on identical channels, as well as one SSID for all three with different channels (preferred for a seamless wireless), and the behavior does not change either way.Based on some other threads, I tried forcing the LAN port speed to 100 mbps, but the problem persists.
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Apr 24, 2012
Randomly the internet connection for either my, my son's , or my husband's pc drops. This also can happen with the X-box. The router lights indicate it is working and the rest of the connections will be fine just randomly any one of ours will fail until we reset the router. Two of the pc's are wired, one is on a plug (devlo) and the xbox is wireless. I phoned BT, our isp, who sent an engineer out. It turned out the BT rep told the engineer I had reported no dial tone on my phone line and if I had allowed them to investgate this fictitious fault it would have cost me £150 for a call out.
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Mar 5, 2012
I've got a problem on 887VAMG router. It drops important connections. As customer wants to have a firewall I created ACL and ip inspect rules ,but the router drops their connections to cloud and some websites are not opening. So I removed ACL and most ip inspect rules just to test if it effects that. And left only ip inspect http urlfilter. But still they have those problems, so I'm really stuck how to configure that firewall. The below some dropping connection review:
%FW-6-DROP_PKT: Dropping tcp session due to RST inside current window with ip ident 13968 tcpflags 0x5014 seq.no 1629693318 ack 1687676045
000049: Mar 6 11:49:21.324: %FW-6-DROP_PKT: Dropping http session <ip>:1766 69.171.242.12:80 with ip ident 26247 tcpflags 0x5018 seq.no 264144210 ack 642133125
000050: Mar 6 11:50:00.774: %FW-6-DROP_PKT: Dropping http session <ip>:4708 69.171.242.12:80 with ip ident 2425 tcpflags 0x5018 seq.no 3819869211 ack 1862176018
000051: Mar 6 11:50:52.515: %FW-6-DROP_PKT: Dropping http session <ip>:2599 173.194.34.90:80 due to RST inside current window with ip ident 22909 tcpflags 0x5014 seq.no 899975979 ack 92642430
[code]....
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Jun 28, 2012
I have a cisco RV180 hooked up to a cisco cable modem and Cox service.
The basic symptoms of the problem are that every 10 minutes or so external connections will hang. This lasts maybe 20-60 seconds. If you're loading a website when this happens, various parts of it won't load and firefox will sit and spin indefinitely (it seems) until you manually stop the loading and click the reload button.
When this is happening I can still connect to the routers webserver and dashboard that auto-refreshes every 10 seconds. It seems perfectly fine. My initial theory was that something was broken on the Cox end of things, but after swapping out the RV180 with an old on-q router we had laying around, we haven't seen the problems.
Some other differences I've noticed between the on-q and the rv180:
* with the rv180 traceroute to external hosts shows a big delay (500-600ms) at the hop right after the router. With the on-q, it's 12ms.
* when I ping the ip of that hop with the large delay, with the on-q I get no responses. With the rv180 I would get these strange host redirect messages that make it look like that ip is redirecting to itself. There would be 1 or 2 of those redirect responses, followed by 3 or 4 errors, and every packet would be listed as an error in the ping summary.
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Nov 11, 2012
A couple of days ago, after a suggestion in a old forum post (rv180 dropping connections every 10 minutes or so) I tried increasing the various session timeouts. This didn't seem to affect anything for the first day, but last night the router started becoming unresponsive (not responding to pings, but maybe continuing to route established connections.) After a couple minutes the router would be pingable again, and as soon as i could I reverted the changes I made to the session timeouts. That didn't seem to fix the problem. Logs showed many many warnings saying "nf_conntrack table full, dropping packet."
Then as soon as I got on the phone with small business support the problem seemed to correct itself. The only thing we changed was decreasing the MTU to 1472. It is strange that the MTU would make a difference all of the sudden, isn't it?
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Jan 17, 2012
my configuration; ADSL2+ @ 21Mbps comes in via Telstra. Fibre optic cable trunk to main road, copper to the house, total distance 246m, hence good speeds. The phone is connected to a dual port filter with a phone and fax connected through double adapter to one port, and DSL-526B connected to other port.DSL-526B connected to DIR-655 Hardware A4, firmware 1.30. The two are set up in bridge mode, with a static IP. The DIR-655 connects to a DGS-1016D and a DGS-1008.I am running WIndows 7 ultimate x64 w/8GB ram, I5-2500K, and all MS patches.
four days ago I reinstalled my windows system. At that time, I uninstalled Tablet PC components and Windows search. I use FreeDownload Manager for my download needs, and it includes a BitTorrent client. I installed the latest version.From that point on, whenever I download any torrents the connnection to the internet resets and takes about 1 - 3 minutes to re-establish itself. I have tried going back through the several versions of the program to get back to the version I was running before I re-installed all to no avail.
I replaced the cable between wall socket and filter, replaced filter, replaced phone cable, also to no avail. I have tweaked the program settings now with only three half open connections, and I've reset the modem donezn of times. I've reset the DIR-655, and done factory resets on both and reconfigured them. Nothing has worked. I use MAC address filtering and I have ACLS which block access to various sites because of kids, and I use OpenDNS web content filtering too.
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Oct 14, 2011
I am getting crazy with our Cisco Linksys RV016. It handles 3 simultaneous connections to the internet using 3 ISP. All our company goes to the internet using this cisco linksys RV016, our corporate switches are connected as clients to the router. Sometime ago, this router started to drop POP3 connections to our network, when this problems is present, all users get Receiving' reported error (0x80042108) in Outlook 2007-2010. Currently i have setup POP3 service to use the First ISP connection, but when this problem is present, the only way to eventually resolve it is to switch the link POP3 Service from the First to the Third ISP, sometimes it works immediately, sometimes don't. We are using this router since 2007 but this problems started to arise from this month.
Our switch is the latest firmware available is Cisco website, this is the Firmware Version: 3.0.2.01-tm.
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Jun 23, 2011
6Jun 24 201118:08:44209.85.213.5458623174.141.xx.xx25Deny TCP (no connection) from 209.85.213.54/58623 to 174.141.xx.xx/25 flags RST on interface outside I am getting this error in my asdm logs whenever I try to send an email with an attachment. Regular email go through fine. If I send a 1mb file it seems to go through after several attempts. If I send a 5mb file it might go through anywhere between 4-15 hours. It doesn't matter where I send from. Sometimes it will say ACK or RST ACK on interface instead of RST. The ASA is running 8.3.1 code. I have tried inspect ESMTP and removed it, tried sysopt connection timewait. I am at a loss.
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