Cisco Wireless :: Intermittent Connection To Network Using 1242 AG Access
Oct 15, 2012
I have a Cisco 1242 AG wireless access point with the goal of having multiple SSIDs. I set up one network which broadcasts correctly but only sometimes can I connect to it.
And, even if I connect to the network, I cannot get a DHCP address for the client.Other devices connected (but not through this Access Point) to the associated VLAN 60 can get a DHCP address and connect just fine.Here is the configuration for the Cisco 1242 AG access point in question: [code]
Lastly, here is the information on VLAN 60 from the distribution switch. As mentioned, other devices connect to this VLAN and get IP addresses just fine.
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Oct 15, 2012
I have a Compaq with XP wired on a Network with a Belkin N600 Router.There are 5 computers on the Network, (4 wired, one wireless) and this is the only computer that I have problems with connectivity. It connects to the Belkin through 2 switches.Typically when I turn the system on it connects, downloads mail, etc. After a short period of time there is no connectivity to the network for printing nor the internet.I may get connectivity randomly again after a while, but you never know if or when you will get connectivity again for sure. I am using Explorer.I had loaded some Belkin software with no luck so I uninstalled it. The other computers have no special software for the router.
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Jan 24, 2013
I am using this wireless router for connection to internet:http:/[url]...The problem is that in most of the time the router works without a problem then suddenly without doing anything from my side the internet connection starts intermittent and then I can’t event connect to the router. This is a screenshot of pinging the router when the problem occurs.
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May 10, 2012
I moved 1242 access point to my new buliding which i have 5508 wlc and 3500 acess point are working. i connected 1242 ap in network it got registered and download new ios and downlaoded the configuration and working fine. But i open the WLC tha 1242 ap are not visible in ap list.
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Jul 14, 2012
I've been running into an issue for the past week or so where my wireless adapter intermittently can't contact my router.When it occurs the network connection reads as having limited connectivity. I'm unable to send requests to load webpages, and videos and the like stop loading. Sometimes the network disconnects entirely. After this occurs, I can't connect again for a few minutes. My connection consistently reads as having 2-3 bars available. The issue tends to occur frequently, often every 15 minutes or so. Strangely enough, I have been able to play bf3 online for over 40 minutes without connection problems (I quit before any occurred - not sure if any would have). So far I've tried the windows troubleshooter, updating the driver to my wireless networking adapter, manually assigning my network address (tried 192.168.1.4, 192.168.1.5, etc), setting my 802.11b preamble to "Long only" and performing a system restore. I have rebooted my machine as well.
My technical specs are as follows:I'm running Windows 7 Ultimate N 64 bit edition with service pack 1. System has 8gb Ram, an i5-3570k processor and HD7850 graphics card. Motherboard is the Asrock Z77 extreme 4. My wireless network adapter is the TP-link TL-WN722N. The adapter was working fine for some time before this issue appeared.My router is an old U.S. Robotics Wireless MaxG Router. It seems to work fine with other computers in the household, although it does require fairly frequent power-cycling. Running ipconfig on the command prompt while the internet is working returns:
Quote:
Windows IP Configuration
Wireless LAN adapter Wireless Network Connection 2:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::293a:e9bb:ba5a:7536%14
IPv4 Address. . . . . . . . . . . : 192.168.2.5
[code]....
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Dec 21, 2012
I am having trouble with my wireless internet at home, i am using a dell inspirion with windows 7, and an ipad, my router is a Netgear DGN2000, what happens is that the connection is intermittent on all the devices when using the wireless connection but no problem when using a direct connection.
These are the spec when it is working:
Windows IP Configuration
Host Name . . . . . . . . . . . . : Ericise
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No[code].....
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Mar 24, 2013
When I tried to add new AP 1242 to my network I had following problem:
The Ap was constantly reloading and I was getting message
Wed Mar 20 13:32:12 2013 AP 'UBFT-E06-F0A-R09-0022.901b.a6ba', MAC: 00:23:ab:27:1f:30 disassociated previously due to AP Reset.
%CAPWAP-3-IMAGE_DOWNLOAD_ERR3: capwap_ac_platform.c:782 Refusing image download request from AP - unable to open image file /mnt/ap_bundle/ap.pri//c1240
I decidet to reinstall software on WISM 2 modul (7.2.111.3) this fix the problem and AP joined controller but during this process I have lost connection to 87 AP for 3 seconds and then they joind back again.
"disassociated previously due to AP Reset"
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Apr 25, 2012
My router has been dropping the internet connection for years. The ethernet connection to the desktop works fine all the time. The problem is only with the wireless connection. About every 1/2 hour or so the router will drop the wireless connection and neither or my 2 laptops can find the network. Unplugging the router and replugging it in solves the problem temporarily, until it drops it again. I updated the firmware to 1.0.4 and that yielded no changes.
Router: WRT54G2 v.1 Modem: Siemens Speedster 4100 (part #060-D141-A12) My two laptops running wirelessly are Macs. The desktop is PC running Windows Vista.
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May 25, 2012
Bought an E4200 to replace my Netwgear router and am experiencing the following problem.One of my wireless boxes serves as mu mail server. I've been running this configuration for years so the only thing that has changed is the router.The neworkd is up and all wireless clients can connect, but after some time, access to the mail server just 'freezes'. I say freezes as the nework icon (i'm using ubuntu' still show a connection. In addtion, there are not error in any of the logs. I just seems that the mail server and the router just stopped communication.
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Nov 20, 2012
I would like to create a Mesh network using Cisco 1242 AP's running in Autonomous mode via A Channel.
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Oct 30, 2012
I want to setup Wireless Clients MAC+Active Directory based acess on AP 1242 standalone Wireless series.Steps i have configured :
1) SSID manger under Open authentication : Selected with EAP.
2) under advacned Radius.MAC Address AuthenticationMAC Addresses Authenticated by: Authentication Server Only
3) Server Manger : Current server list added the radius ip address 10.1.200.x
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Apr 14, 2011
I have just installed 3 access points along with 6 repeater access points all running V12.4. They are all AIR-AP1242AG-E-K9 using the 2.4GHz radio.
Prior to installation I bench tested that the repeaters would associate with the access points and if one of the access points was turned off the repeaters would automatically roam to another access point. I did not have all 9 devices powered up at the same time, but did have 2 repeaters and 2 access points powered up to simulate association and roaming.
During installation as access points and repeaters were powered up everything behaved as expected (repeaters were associating to access points etc.) however during installation once everything was installed the 3 access points were all powered down for half an hour or so and once powered back on the repeaters did not automatically re-associate until they were re-booted.
I have now configured the repaters with parent MAC addresses to reflect the above current assocaition pattern but not yet powered off the access points to test if this forces re-association as this is now a live operational site!!
Is it normal to have to re-boot the repeaters if ALL 3 access points are powered down at the same time? i.e. If only one access point is powered down will the repeaters automaically roam to another access point o.k.?
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Oct 16, 2011
my new E4200, replacing an E1000. In my net, at home, four computers are hooked up; 2 DELLs, 1 HP and 1 Vaio. All the computers are working fine with the new router but the VAIO notebook. I've installed the latest Firmware Version, 1.0.03. Done the new drivers on the VAIO. VAIO got intermintent net connection and nothing showed in the event logs. Worked fine with the E1000.
Sony VAIO: VPCEE45FB/BI
Windows 7 - 64bits
E4200: Firmware Version: 1.0.03
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Apr 21, 2013
I have a brand new DAP-1522 A1 connected to an 802.11n wireless LAN in bridge mode. Running in the 2.4GHz band with WPK-2 and AES security/encryption.Everything runs fine 99% of the time, but once a day or so the wireless LAN connection on the DAP-1522 drops and then takes about two minutes to re-connect. It re-connects and then everything is fine for a day or so until the next dropped wireless connection episode on the DAP-1522. I know my 802.11n wireless network is 100% fine as during the dropped connection to the DAP-1522 I can connect directly to the 802.11n wireless network (running from my gateway/router) using my other computer, no issues.I've seen some posts on this forum that the A1 version of the DAP-1522 hardware is not 100% compatible with the 802.11n network standard and there will be intermittent wireless drops. If this is true, it's just insane. All I can say is I can't believe DLink would allow a product to be sold that won't work properly on 802.11n networks.I check the logs each time I see the dropped wireless connection and all that shows is the following.1) Negotiating connection 2) 4-way handshake success [mac address]There's no message in the logs about why the wireless connection dropped, but I assume it has something to do with re-newing a key for the wireless network as the successful key renewal messages are the only other messages in the log. When the wireless network dropped I don't see the successful key renewal message at the time I should see it.I thought this DAP-1522 would take 15 minutes to configure in bridge mode and then I'd forget about it. Spend too much time on this already, so a bit disappointed with this DAP-1522 and DLink tech support....though when it's connected to the 802.11n wireless LAN it works fine.
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Dec 3, 2011
I recently upgraded my Linksys wrt120n router firmware & had to reconfigure settings. Subsequently, some (but not all) of my apple devices are having intermittent wireless connection problems. Specifically, my ipad1 & ipad2 never lose their connection but a mac book pro (~ 2 years old), iPhone 3g, iPhone 4, older iPod touch & very old i book g4 all work for a period of time (usually 1/2 day) & then lose their connection. When I attempt to reconnect these devices I receive the following error..."unable to join the network xxxxxx....". I also have a Dell laptop (1 1/2 yrs old) that generally does not have the connection problem. Finally, when the devices do lose their network connection all I have to do to reconnect is go to the Linkys router setup webpage & click on save & the wireless connection works again (almost like this is just refreshing the connection for these specific apple devices). I was not having any problem prior to the firmware upgrade & from what I have read the older firmware version is no longer available so going back to the old firmware does not appear to be an option.
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Mar 11, 2011
I get cut off after about an hour online. I have cable internet and they have been out to check. I have a new modem from the company. They have put the modem on a separate wire but the problem continues.
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Dec 5, 2011
My laptop is connected to an Internet cable inside my apartment building for access to a free Internet service provided by the building management.The high speed cable service works okay for a few days but then after say 4 or 5 days it starts to slow down and then on the 6th or 7 day I can no longer connect using the cable. The technician in my building doesnt speak such good English and claims it is a software problem in Windows itself in my laptop ,but I don't know what would cause the software to trigger this condition?The last time the technician told me to go through some steps but I have to admit I have forgotten the very last ones in the " procedure " and how to complete the final steps of the procedure :-
He said to :-
1. Right click on the computer icon on the desktop
2. click on device manager
2. click on " network adapters " these are shown as being " Atheros AR8152/8158 PCI-E Fast Ethernet Controller ( NDIS 6.20 ) and secondly " Realtek RTL8188CE Wireless LAN 802.11 PCI-E NIC "
4. After that he told me to " refresh " the connection but I have forgotten how to do so?The wireless connection is working okay but I have noticed once this fault happens to the cable connection, the wireless connection doesn't work either until I unplug the cable. Then I can connect to the wireless Internet connection. But if I leave the cable in then neither the cable or the wireless works?
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Apr 18, 2012
Im currently experiencing an intermittent connection on my office and we just upgraded from 4Mbps to 10Mbps. Latency is high when pinging commercial website like yahoo.com,it shoots up to 200sec. ISP router is connected to two HP Procurve Switch, then the workstation and servers. Already did a router/modem test and it failed, I advise our ISP to change the router but it were still experiencing the same problem. Network drop is also experience even after office hours, eventhough only few workstations are working.
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Dec 2, 2012
I have build a new pc this week. All was fine offline. After connecting to the Internet initially everything loads quickly however sometimes after turning on my pc or restarting it the Internet just refuses to load. Pages take forever then I get a message unable to connect however the connection is still active and all my other devices work ipad etc. after a few times restarting or leaving it for a while all is fine.
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Apr 12, 2011
I work in a small school and recently we started to have a problem with browsing the internet. We don't have an 'IT Department' as such as I'm the closest thing to it.When a browser is opened it will not connect to the homepage, or if it does its generally from cache, instead an error message about not being able to connect to server will appear. Now if you hit refresh you might or might not connect to the webpage in question but you can gurantee that it will take a long time to make that connection even on an undemanding site like wikipedia.The odd thing is that when connected to a speed checker it gives no surprising results, speed is normal. Also when downloading a file or the latest linux live distribution torrent I can achieve maximum speeds available to us.We use a selecction of Macs & PCs mostly connecting through ethernet cabling although connecting wirelessly is no different. We use BT 2Wire 2700HGV Business Hubs. I can't think of any changes our end that have happened to cause this and our internal network connections run just fine. I have tried pinging from the command line and it looks ok to my limited expertise, no lost packets.
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Mar 9, 2009
If you deploy a Cisco 1242 a/b/g access point as a rogue detector, can this be used for 802.11n wired detection as well.i.e Will the controller send the MAC addresses of the 802.11n clients and APs. url...
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Nov 11, 2012
I have intermittent internet access from a new laptop. When it works it is fast and consistent, but it seems there is a problem where I can sometimes start getting only part of an internet page, and then it stops downloading altogether.Below are ipconfig /all and ping tests and a screen shot of the device manager.A bit of background:1) There are 4 computers on the network, this laptop (samsung NP530) is the only one where internet is not working2) It is new, has avast installed as antivirus. Norton came with the laptop but I did not click on the button to activate it when it popped up on first opening3) A small strange thing: I get "SWMagent is restarting" message when I restart the computer. I don't know what this is.[CODE]
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Dec 14, 2012
I have an intermittent issue happening on my company's firewall, and I'm at a loss as to how to troubleshoot further.
We recently made some changes to our network, which included moving an ASA 5505 from one location to another. In moving this we also connected it to a different switch. It used to hang off a Cisco 3560, and now it hangs off a ProCurve 5406zl.
The setup is that the ASA is connected on two ports to the HP, which is simply a layer 2 device sitting between the firewall and the uplink to our ISP. One port, e0/0, is the outside interface and is set to switchport access vlan 2. The second interface, e0/1, is set for vlan 1, also access mode. It has an IP of 10.0.0.2. The HP on the other end of that has an IP of 10.0.0.1. So outside VPN connections come through the HP to the ASA on e0/0, and back out the ASA on port e0/1 to reach devices on the internal network.
What happens is that when a user connects to the VPN, they can reach internal resources intermittently. For example, I tried to ping an internal server IP address (let's say 10.0.0.23) from my laptop, while on the VPN, and pings failed. However I could ping that IP from the ASA itself. Another example is that during one VPN connection I was unable to connect to an internal web server, but once I disconnected and connected ahain I could reach the server fine.
The intermittent nature of the problem made me think that it could be an ARP issue, that somehow the traffic is getting sent back out the wrong interface sometimes, hence the lack of communication. However when I did show switch mac-address | include mac address, using the base mac of the HP, I only saw the mac address of the HP on one interface, e0/1. That makes me think that things are working as they should. Although I guess maybe it should appear on both interfaces...? I don't know. How I can most effectively troubleshoot this? It seems like the symptoms are indicative of some kind of rookie mistake, but for the life of me I can't figure out what it is.
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Jul 17, 2012
I've been having a problem for a while now wherein my internet connection seems to randomly drop for anywhere from ten seconds to a minute, then come back online. It's been doing this over the lifespan of one router, and continued into the life of this new one I have, which is a WNDR3700v3 Netgear.
I called my ISP and they fiddled around with things on my computer, but the issue is still going on. Rather than slog through another three hours with them, does anyone here have any tips for what I might look into for the cause?
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Jan 5, 2013
I was previously with sky and never faced any bother with my wireless broadband. Recently to my regret we moved broadband (amongst other utilities)to Utility Warehouse (UTW) who's broadband is through Telecom Plus. Anyway since joining with them I have had no end of bother with intermittent internet connection. Sometimes we get a stationary green broadband light then after a little while then we get a flashing green broadband light. We are constantly either pin resetting the router or switching it on and off at the rear, where it will work for a small amount of time then connection is lost again. The router that they have given us is a technicolor tg582n Pro. We have had two of these as originally we thought that the router could be faulty but obviously that is not the problem as even the second one is dropping our connection. We bought another filter incase that was the problem and even tried plugging router directly into phone box and still didnt work. Utility Warehouse have been about as much use as a chocolate teapot and we are so <unhappy> that we are paying for a service that does not work? They said that our cordless phones could be interfering with the signal? Is this maybe the case and the phones are running on same channel as router thus causing interference? We had these same phones when we with sky and they never caused interference with our broadband. I was going to try connecting my laptop via ethernet cable to router. Sometimes the landline crackles (since UTW installed a new landline & new tel number) so it could even be that? UTW will not send an enginneer out to check their line. we are at our wits end, about to cancel their broadband and go back to reliable sky.
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Sep 13, 2011
download an autonomous image for Cisco Access point 1242 ?
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Jul 23, 2011
Experiencing intermittent problem with access to home wifi for one PC (win 7) in the house (2 other PC's access internet OK via same wifi) Dell Studio one - details below - 50% of time will connect if we reset router or re-start PC or try again the next day.[CODE]
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Apr 11, 2013
I recently moved and got a new internet provider. All the laptops connected get intermittent internet access but stay connected to the network which has excellent signal strength. what could be causing this ?
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Jan 29, 2013
I have a Dell Inspiron desktop with Dell Wireless 1506 802.11b/g/n card. This PC is fairly new - purchased in October 2012. Most of the time the wireless connection is fine, although the signal is weaker than it should be (about 2 bars). Occasionally however the wireless signal drops to one bar or less, or is completely lost. The result is loss of internet connection. Restarting the PC will often restore the connection, although the signal level remains low. This is very surprising as other 802.11b/g laptops and PCs, sitting on the same desk in the same room, will show a strong wireless signal of 4-5 bars. I have measured the wireless network strength in that room using a laptop with inSSIDer and it seems just fine. So I don't believe the problem is in the wifi signal strength.
The wireless access point is a Motorola surfboard b/g cable modem that is located about 25 feet from the Dell PC. That cable modem is reporting excellent signal levels on the coaxial cable to the street, so the problem is not in the access point. Connection speed when tested from other PCs/laptops on that network is just fine.
I am wondering if there is some sort of intermittent hardware problem in the Dell wireless adapter that might be causing this problem. Or some sort of software conflict.
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Dec 2, 2012
Can I use the access point 1242 to do clients location using WLC 5008, NCS 1.1 and MSE3310?On this moment I doesn´t need of CleanAir features. I want just to do location for clients and rogue aps.
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Oct 11, 2012
I am having the peculiar issue in our ASA5500 firewall (version 8.2(5) ), where the remote access vpn is getting issue, I am unable to ping the internal resource for sometime, however without any modification the problem gets resolves.
During the issue we can see Tx count 0
Username : xxxxxx Index : 3147
Assigned IP : 172.17.254.24 Public IP : 14.99.x.x
Protocol : IKE IPsec
License : IPsec
Encryption : 3DES AES128 Hashing : SHA1
Bytes Tx : 0 Bytes Rx : 8764
Group Policy : EMP-VPN Tunnel Group : EMP-VPN
Login Time : 15:07:51 IST Fri Oct 12 2012
Duration : 0h:06m:34s
Inactivity : 0h:00m:00s
NAC Result : Unknown
VLAN Mapping : N/A VLAN : none
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Feb 23, 2011
Currently i m experiencing VPN Remote access intermittent disconnection on the asa 5540,what is the reason for that?how to start a proper troubleshooting?
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Jan 12, 2012
We run windows server foundation 2008 and have about 15 workstations. I had been running the network on 10 workstations prior to moving the server to our new location about a month ago. All was working well. We had run with the 15 workstations no problem in our new facility for several weeks. many of the computers are dropping the network connection now intermittently, with no predictable pattern. I can't seem to reproduce the conditions that cause the drops.
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