We have about 15-20 APs out in the field, and at random they seem to disassociate from the WLCs and re-associate within a few minutes. We have not looked into that entirely yet, but we are having an issue with a few. Sometimes, they will disassociate and after a few hours reassociate.
View 9 RepliesNetwork running about 60 computers, most of which are running windows 7 professional. Some are on a domain, some are not.At (seemingly) random times, some computer on the network will lose the ability to browse websites (including the web interfaces of networked devices). I can't identify what circumstances cause this to occur. I only find out about it when someone calls me.From the affected computer:I can ping sites I can ping our Cyberoam UTM (which acts as our DNS, DHCP, and firewall)disabling/enabling connection doesn't fix the problem releasing/renewing ip doesn't fix the problem flushing dns doesnt fix the problem uninstalled antivirus on two test machines, problem still randomly manifests.replaced the Cyberoam with newer model users have claimed that if they wait a long period of time (40+ minutes) the problem sometimes resolves.rebooting the computer resolves the issue until it randomly occurs again changing the computer's mac address also resolves the issue until it randomly occurs again.
View 3 Replies View RelatedI 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.
View 6 Replies View RelatedThe wireless drops specifically from my laptop constantly at random times. When the wireless drops in order for me to be able to reconnect i have to restart the router itself. There are also random times where the Wi-Fi stops broadcasting altogether. I have a computer connected via Ethernet and it does not lose connection during these times. All the computers are running Windows 7 and the Router is up to date on firmware.
View 5 Replies View RelatedHad an E4200 for a couple of months now and have not been able to resolve an issue with the router dropping an Apple iPad 2 at random times.The E4200 is replacing a Cisco Aironet 1200, which never dropped any clients, iPad 2 or others, and never displayed any of the issues below.
TECH DETAILS:The E4200 is being used purely as an access point. All extras are not in use and are disabled.
Firmware 1.0.03
Hardware version 1.
BASIC ISSUE:The E4200 drops an Apple iPad 2 off the 2.4 Ghz Mixed (B, G, N) network. The user must then select the network to rejoin. Rejoining occurs without incident. The same issue occurs when the network is restricted to B, G. The drops occur at what appears to be random intervals - sometimes 10 minutes apart, sometimes hours apart. We can have as many as 6 drops in an hour. A ping to the apple ipad shows the device stops responding to pings about 10 seconds before the user is prompted to rejoin a network. Meanwhile, a ping to the E4200 itself from a laptop connected via the E4200 on the same radio as the ipad continues to work without fail during this incident.
1. The iPad 2's cannot connect to the 5Ghz radio. I believe iPad 2's are supposed to support 5Ghz.
2. Both our Apple TVs do not connect to the 5Ghz radio: they fail with a "There was an error connecting to the network. Check your settings and try again. (-3914)" error. Apple TV supports 5Ghz.
3. The admin interface for the E4200 is very slow sometimes. Probably over 20 seconds to render some pages when it gets really bad. As a comparison, Internet-based pages on fast sites that delivered via the E4200 itself load in less than 2 seconds.
4. The HTTPS version of the admin interface can only be connected to via Safari browers. Both Internet Explorer 9 and Chrome 16 fail to connect with a "Connection reset" error. In Chome, it says "Error 101 (net::ERR_CONNECTION_RESET): The connection was reset." This is across multiple devices. There is no issue with straight HTTP.
All other devices - including Macs and PCs - connect fine with the E4200 on both 5Ghz and 2.4 Ghz radios, even if they cannot access its admin interface via HTTPS.I've presented quite a few issues above, but the main one is the drop outs for the iPad 2 devices. I'd present logs on drops, but the thing doesn't record any useful logs.
Basic wireless config:
5Ghz:
Network Mode: Wireless-N Only
Channel width: Auto (20 or 40 Mhz)
Channel: Auto (DFS)
SSID Broadcast: Enabled
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The router is being good so far. I have a Belkin Wireless G Plus MIMO router with windows XP operating system. This has been going on for a couple of weeks now and I really want it to stop because it is stopping me from doing things that require the internet.
View 2 Replies View RelatedI have fiber optic Internet with static ip and keeps disconnecting at very random times. It started 3 weeks ago, before it worked perfect. Most of times dcing 3 times per hour. But sometimes working for hours without dcs. Usually disconnects only for half minutes then reconnect, it can be very annoying. The provider keep saying that need change router. I'm tried three different of routers already, but keeps disconnecting. I'm tried connect the net directly into my cpu, without router, but not worked, dc-ing too. I tried ping the default gateway when its disconnected, and its saying: request timed out.What else can i try? It should be, that the provider has too many clients, and their router collapsing?
View 2 Replies View RelatedWe recently moved and upgraded our internet service from 1.5 Mbps to 4Mbps with CenturyLink. However, since our service was activated last Thursday, the internet connection intermittently drops and will not recover unless I reboot the modem. The period of up-time will last anywhere between fifteen seconds to several hours, usually falling along the five-to-ten minute range. No difference when using ethernet/wifi. The DSL light stays on, and the Internet light remains on as well.
View 11 Replies View RelatedI have a brand new Dell laptop running windows 7 connected to a sky router wirelessly. My internet connection randomly just drops. At 1st I could just click on the yellow triangle and troubleshoot and it would reset the network adapter. I cannot do that now - Im having to disable the adapter and the enable it and Im back on the internet.I have set it up so I am connecting via a manual IP address as I wondered if when the kids PS3 was connecting it was pinching my Ip address.
View 11 Replies View RelatedI've been having some problems with my new custom built computer connected wirelessly to my Router. My router is an SMCD3GN. So it is a Router/Modem in one. I am currently using the Linksys AE3000 Wireless-N USB Adapter. I have had a past Wireless USB Adapter, & an internal Wireless network card. The USB quit working & in order for me to get it to work is I have to reinstall the drivers everytime I turn my computer back on. The internal wireless network card would randomly lose internet every 30mins - an hour. Being a gamer, this is very frustrating. So, right now I am using the Linksys USB, and I was just playing a game & talking to some friends on skype & I would lose internet for 2 seconds then it would automatically reconnect. So I am beginning to think that it might be my Router but I tried my USB on my laptop for like 10 mins (I disabled the internal wireless network adapter) & I went into cmd.exe and pinged google for about 10 mins, & it said "Request Timed Out." several times.
View 2 Replies View RelatedI keep getting random moderate Nat sometimes, other times its opened. I have made a static Ip and port forwarded 4 ports that xbox uses. 88 udp..3074 both...53 both...80 tcp... Now when i test my connection on the xbox dashboard a message will come up saying make sure my UpNp is enabled, which it is and it tells me to make sure port 3074 is enabled which it is. I have restarted both my modem and router multiple times to try and fix this.
I have a linksys cisco e4200 and I recently updated its firmware which i thought would possibly fix the problem.I have talked to linksys but no luck.I have talked to my internet Cox Communication but they tell me its the router and i believe it is because when i directly connect my xbox to the modem i never get the moderate Nat. I have also talked to Norton about my virus protection because I thought maybe it was blocking some ports, but they disabled it and I still get the message.
isp is Comcast. They have had 2 techs come out here to look at problem and found nothing. I'm on a wireless connection with router in the next room. Modem was replaced a week ago and still problem persists. Landlady says she has no problem (shes the one in the next room and is connected directly) but I think that because she doesn't notice (I play online games so its very noticeable). I have excellent signal from router. This is my report:
Windows IP Configuration
Host Name . . . . . . . . . . . . : *****
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
[code]....
We have a bunch of computers(70 aprox) connected to a domain. Since couple weeks ago very strange issues started occuring, internet and network access(path to network share is lost) would come up at random times and on different machines and would last for about 10-20 seconds it would re-connect again.All the computers are using private addresses.Most machines are windows 7, some are xp.Using Windows server 2003 as dc.Since the occurance is so random it's very hard to pin point the cause.
View 1 Replies View RelatedI have a 2911 router hanging/freezing at random times, could work fine for a week then crash, or sometimes, could only go a few hours, completely random with timing. The onyl fix is to manually pull the power and reinsert.When this happens, all services/access stop working, including nothing on console access.This was on 15.2.1.T1 which im aware, has a few bugs, so i upgraded to 15.2.1.T2.The issue continued, so I swapped out the 2911 with a brand new one. The issue is still present.
One interesting thing, is when the router crashes/freezes, all lights appear to remain on working as usual, but when i unplug any of the ethernet links, the lights still continue to remain flashing and on for the ethernet LEDs, even once i have fully removed the cat6 cable.
Since about 3 weeks ago my DSL has been getting totally random ping spikes, from under 40 to over 1500MS for minutes to hours on end. Nobody else is using my internet, I've verified this. There is nothing sucking up bandwidth on any connected device or computer, as far as I can tell through troubleshooting to the best of my ability. I tried switching to a Cisco X2000 modem/router combo and it did nothing, still totally random latency. Also, when I called AT&T about this, they didn't even know what ping was. They ran an upload/download speed test (which is still mostly consistent regardless of latency) and told me I was basically making the issue up.
View 5 Replies View Relatedi have an acer laptop an iphone and an xbox360 running on my connection not always all at once but my connection just randomly cuts out at any point whenever im on xbox live i get disconnected and i look at the router and its just resetting itself and i have to go and reboot it or just reset it and wait a wile before it will come back on. but even when it is on its not for long before it goes off on its own
View 2 Replies View RelatedWe currently have around 150 2975 switches and have had problems with it them not handing out PoE power to the cisco phones and access points at random times. There is plenty of power left for the switch to use. We have at least 15 that will be running fine for about a week and then all of the devices that use PoE power will shut off and will not come back on until we reload the switch. If you console in there aren't any messages that pop up and if you look at the port it just shows on connected or will show IeeePD in the power inline. We have contacted Cisco TAC and they just RMA them.
View 6 Replies View RelatedI have an AP(1131) that keeps disassociating from the controller. It stays alive for about 10 mins then it doens't work anymore. I tired changing the AP but that didn't make a difference. I also tried changing the port on your 500 POE switch. My last effort to fix it was to put the AP on a 3550 switch with a power injector. Still no luck.
I don't understand why its doing this. I am able to connected to it and surf the internet for about 10 mins. After that It leaves the controller and just cycles through different colors.
I have AIR-AP1141N-A-K9 access point, but can not get over 130 Mbps speed. Looking at the manual it appears that I need to set "channel width" to 40-above or 40-below, but it only accepts 20. Is the 2.4Ghz radio limited to 20Mhz? Since the specs indicate that it can do 300Mbps, I must be misunderstanding something.
View 4 Replies View RelatedI'm trying to turn off the LED on a Cisco Aironet 1141 p/n AIR-AP1141N-A-K9. This is a standalone AP and from the CLI I'm issuing this command:
ap(config)#led display off
The LED does not turn off after typing this command. If I do `show run' it shows up in the config so the command was accepted. Is there a different way to turn off the LED? I'm running IOS Version 12.4(21a)JA1.
I have two access points that I recently purchased from ebay. I updated them both to c1140-k9w7-mx.152-2.JB and I have been unsuccessful at getting either of them to connect at faster than 39MBps. After scouring google for answers I found several with the issue of not using the correct WPA2/AES configuration and that was me. However after changing the configuration, I am still unable to connect to either of the APs at faster than the 39Mbps. [code]
View 4 Replies View RelatedI have 2 Cisco 1141 aironets access points.
I've fallowed this tutorial: [URL]
I have an Ubuntu server running free radius authenticating against an LDAP server. Now I'm able to log into the AP via ssh with my LDAP credentials.
What I can't figure out is how do I setup the AP so when people connect to the AP's wireless they are prompted to use their LDAP credentials.
I have an aironet 1141 with multiple v lans configured, all with wpa2 but I need to put mac filter on only one v lan, so I follow this manual: [URL}. Basically is mac a ACL and applied to sub interface. So, I can associate to the AP, but no one can transmit or receive . If i remove the ACL all works fine.
My config:
access-list 700 permit <maclist> 0000.0000.0000
access-list 700 deny 0000.0000.0000 ffff.ffff.ffff
interface Dot11Radio0.130
[code]....
I have an existing setup consisting of:
Windows Server - doing DHCP for private wired/wireless
Cisco 1141 Autonomous WAP with only private wireless access.
ASA 5505 (with very basic licensing)
HP switch
The customer wants to have guest WiFi.
The guest WiFi is going out to the internet via a seperate VLAN/interface on the ASA. Can the 1141 do DHCP for the guest WiFi? Or do I need to do it via the ASA?
I have a problem putting a Cisco 1141 AP in repeater mode with a AP HP Procurve.Root AP is a the Procurve, but when try to put the Cisco AP with same SSID, Authentication, etc, I receive this error:
%DOT11-4-CANT_ASSOC: Interface Dot11Radio0, cannot associate: NO Aironet Extension IE
I try disable the Aironet Extensions and always get the same error all time. It's possible connect both APs?
I have a customer who accedentally got a AIR-LAP-1141. He needs it to be autonomous. If I convert from LWAP to Autonomous, will there be a licensing issue?
View 1 Replies View Relatedrecently we purchased cisco aironet AIR-AP1141N-E-K9 standalone model. after configuring it , client has no problem with connection and coverage, but there is problem with thoughput. clients are not able to connect at higher rates, even if i set channel width at 40 mhz, max rate for N capable client device is 54mb.
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I'm setting up a Cisco Aironet 1141 (standalone mode, AP) to handle wireless traffic in the office. It gives out 2 mbssids, one of which authenticates domain users through a RADIUS server and places them in an appropriate VLAN (RADIUS options 64, 65, and 81). The other is a guest ssid that uses WPA-PSK and places users in the restricted guest VLAN. Physically, the AP is connected to a 3750 PoE Catalyst, to which RADIUS and DHCP servers are also connected. AP, SSIDs, RADIUS and EAP authentication all work. The configuration given below is a working configuration. People do get authenticated and do get placed in the appropriate vlan. The problem is that, once authenticated, the "Obtaining IP Address" phase on the client hangs and most clients timeout without getting an IP address. Given that the DHCP server is on the same switch and a test simple ASUS Wi-Fi IP gives out the same scenario (except the multiple VLAN) at the speed of light, I don't think that it's a problem with the network connections between clients and the DHCP server. After reading some topics here, I realized that probably other communication will be extremely slow, as well, but haven't tested that for sure. Clients are all non-Cisco - smartphones, notebooks, etc. Most of them are 802.11G, not N.
View 4 Replies View RelatedHow do i get the 12.4 code to assign a dhcp address to my ethernet interface from my server? I deleted the default config on the 1141 and searching has not turned up anything useful.
View 1 Replies View RelatedWe just replaced our Cisco 1240 AP in one of our shops with a Cisco 1141 AP. This is not controller based.
We use several wireless (infrastructure mode) auto diagnostic tools which connect to the AP. We also have many laptops which run the diagnostic software.
We had no problems with our 1240AP. With our 1141, we cannot connect to the wireless tools if both the laptop and the tools are connected to the 1141. If I connect one to the 1240 and one to the 1141, they can see each other and work fine. IF they are both connected to the 1141, they show up as connected in the AP, they can ping each other, but the software does not communicate.
[URL]
I have an airlink ar525w wireless router. My wireless connection drops out every few hours and I have to reset my router to get it up again. My wired connections work perfectly. Also, I am able to see my network as available and with full signal strength from windows but connecting to it doesn't do anything (just says connecting forever). This is not isolated to one computer. I have tried it with laptops, desktops and smartphones. The strange thing is that it works perfectly (hasn't dropped a connection for one month) if I have wireless security disabled.I have tried different types of security (WEP, WPA, WPA2), different channels (all 11 channels), assigning static IP addresses to all my devices and turning off the DHCP server on my router. But none of these settings fix the problem. would be willing to buy another router, but I was reading through reviews on newegg and every router that I saw reviews for has a few people experiencing the same problem that I described here. Is this a widespread problem that I have to live with or does this have something to do with my router specifically?
View 3 Replies View RelatedMy nephew's MAC continuously times out when trying to connect to my wireless connection. Details are:
ISP=Orcon
Modem/router=Dynalink: RTA1025WE
No other network equipment.
Wireless connection
Authentication=WPA-PSK
Browser=Firefox
MAC Book Pro, OS=10.6.2
I am trying to convert two Aironet 1141n access points to autonomous stand-alone units. I have connected the console cable and I can see the unit giving information in the console window, but I cannot type any commands. When I try to get the unit to upload the c1140-k9w7-tar.default file by holding the mode button in for 20-30 seconds, it shows it is examining the file, and then states that the connection to the tftp server has timed out. My windows firewall is off, the interface is configured as 10.0.0.2 255.255.255.0 and the tftp server is showing that.
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