Cisco Wireless :: Clients Disconnected Randomly From AP1262 / Invalid MIC
Feb 2, 2012
End user has a AP1262 which at the beguinning was working fine, suddendly clients reports problems with disconnections. [code]
the version of IOS is Version 12.4(25d)JA., WPA- PSK is set,I have check this errors in cisco tools, it says about possible reasons; one of them
A failure of the Michael MIC in a packet usually indicates an active attack on your network or RF problems.For the moment I set countermeasure tkip hold-time 0 , based on some recomendations in this forum.
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Jul 29, 2011
My computer is a desktop in a differet part of the house, away from the main computer. My computer is hooked up with an AE1000 Wireless USB. This USB is wirelessly connected to a Netgear Extender (Repeater) for a better signal strength. This Repeater is wirelessly connected to the router on the other side of the house, plugged into the main computer.
So my problem is, when im working on my computer or gaming on my free time, it randomly disconnects. My signal has a (!) inside of a triangle at the bottom right of my screen. I run the automatic troubleshoot on my Win 7, and it says either "DNS server not responding" or "Your computer is working properly, but some of your devices are not responding". Other times it works just fine and i run troubleshoot alot and it doesnt find a problem. Some days its running at 144 Mbps others 6.5...
I have checked that all of the devices are uptodate. .I've contacted GeekSquad and they said there was no problem. But obviously for them to connect to my computer the wireless has to be working, so they didnt find anything because it worked for the time being.I'm just woundering are there any capability issues with my wireless? Or any other problems im not aware of?
From Cable>Modem>MainComp>Router(Cisco)>NetGear (Repeater)>Cisco AE1000 Wireless USB>My Comp.
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Jun 18, 2012
I have two routers, a Telkom Mega 100WR and a Belkin F6D4630-4 v2. First I used the Mega 100WR and it randomly disconnected, then Belkin (which is new) and that too randomly disconnected. The funny thing is, both of them use to work.
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Feb 7, 2013
So, i just got a new computer from a friend of mine.It is a couple years old running Vista, but i keep having this problem.I can connect to either of my routers, and i will be fine for about 5-10 mins before it disconnects me from Skype or Yahoo or whatever webpage i am on.The connection icon in the corner doesn't say it is disconnected, but everything disconnects.
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Sep 20, 2011
Wireless clients drop off Netgear router - Running a Netgear router in home. Have one desktop PC, 2 printers, 1 Mac and 3 Windows laptop connected. The devices that connect wirelessly will drop of the router in a random way. One printer, an HP all in one, will no longer function and I have to pull the plug to de-energize and restart it. My wireless network is a mess. I have called Netgear and for the first two months they had me change channels and adjust other settings which seemed to work at first but then these symptoms all came back.
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Feb 18, 2013
The problem is basically that my home wifi runs from a router that renews its IP adress every hour or so, and I keep getting disconnected from the Internet for 15 mins. or so every single time and then again not always; sometimes a page fails to load and then the connection is re-established a moment afterwards - it's very random.
The odd thing is that while my desktop Pc gets disconnected for long peiods of time my PS3, phone and laptop all seem to be able to reconnect during other periods of time where the desktop is unable. Also my parents and sister seem to be disturbed in different intervals. This makes me think that besides the annoying short disconnection on every device, my wifi adapter might cause the desktop additional problems reconnecting.
I'm using a Netgear WG111 v3 adapter. I should probably note that when I was running Windows 7 it already gave me trouble installing drivers and I had to run compatibility mode for Vista, and now with Windows 8 Pro 64-bit I had even more trouble, installer crashing and me having to manually go to the Device Manager and search for the install data for the driver. It's only been causing me problems since I bought it and though it works as I write this there is no way for me to know if it goes offline again or not in the next second.
I've recently reformatted my Pc and that didn't change a thing in this context and I've also been in contact with my Internet provider (the largest of such in Denmark, where I live), and they are the ones that told me that the router needs to reaquire a new IP every now and then for security reasons.
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Jan 7, 2013
I am at one of our remote offices and I am noticing my laptop, despite excellent signal strength is periodically losing IP connectivity on the wireless network. When it drops, all of my IP connectivity stops (pings fail, RDP sessions "await reconnection", etc...). The lower right corner still shows I'm connected to the hidden WPA2 Enterprise SSID. The only way to reconnect is to select disconnect on it, then click connect again. Immediately everything IP based starts working.
There is a 5508 controller in the headquarters. The site I am at has a 30mbps fiber point to point WAN to the headquarters. This site has 2 x 3300 series LAPs which are very good coverage. H-REAP mode is on so traffic terminates at the local office because it is more efficient than traversing the LAN twice for things like local file and print sharing, dhcp, proper active directory sites and services mapping, etc.
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Jan 15, 2012
Some days ago, I download standard IOS image for 1262 and installed, now this 1262 AP can start up without WLC. but I don't know how to recovery this AP image, and let's startup / download the image from WLC and has been managed...Is that ONLY remove the existence image ? and it's will be auto find WLC ?
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Mar 5, 2013
I have a running Mesh Network with AP 1552E and Controller 5508. The end customer has a new requirement to have a indoor coverage near to AP1552E (mesh AP). But in this building he has not any wired Network (it is far from any switched site). The question is: We can use an AP1262 indoor with Line Of Sigth to AP1552E in the running Mesh Network? I know AP1262 can be used in a Mesh Netwok (Root or Mesh) configuring it as BRIDGE [URL]
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Jul 5, 2012
Both the SLM2008 switch, and the AP1262n-a-k9 are currently at factory defaults. I can web into the switch from my laptop, but when I connect one of the 4 AP's I am trying to set up, the switch doesn't see it.
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Feb 1, 2011
I have 4 desktops cat5 to Dlink DIR 615 router. All work fine. Any wireless clients, laptop or netbooks, see the desktop computers for a while then disconnect somehow. All machines can see the Internet through the router at all times. The desktops disappear from the laptop/netbooks but the wireless machines can be seen from the desktop computers but clicking on them gets 'Access Denied' message after a wait.3 desktops = XP, 1 98SE. All laptop/netbooks = XP
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Jun 18, 2012
I have a ASA5505 and it has a vpn set up. The VPN user connects using the Cisco VPN client. They can connect fine (the get an ip address from the ASA), but they can't ping the asa or any clients on the network. Here is the running config:
Result of the command: "show running-config"
: Saved
:
ASA Version 7.2(4)
!
hostname ASA
domain-name default.domain.invalid
[code].....
what I need to add to get the vpn client to be able to ping the router and clients?
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Nov 5, 2012
We currently have an ASA 5520 communicating with 10 ASA 5510's, all on static outside addresses. I was asked to add 5 additional 5510's on dynamic address. All worked well in testing until it was decided that some of the dynamic clients needed to talk to each other.
My testing shows packets just dying in the 5520.
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Aug 11, 2011
i'm getting invalid ip address during connection to nearby wireless network
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Nov 7, 2012
i'm having some trouble pushing CLI templates to controllers in my lab. i get an invalid credentials error but it is random. sometimes i can push the template fine but 30 seconds later if i push the same template it will fail with error. several minutes later try it again and it fails. i have verified the credentials by reconfiguring them consistantly accrosss the devices but if the credentials were actually wrong it should fail every time, not intermittently. there are also 2 controllers i am testing this against and it is also random which controller fails. on the instances where i don't get the credential error my CLI template fully executes without error.
i am using WCS 7.0.230.0 on WIN2K and two 4400 controllers running 7.0.230.0.both controllers are configured with SNMPv3 and SSH. telnet and lower versions of SNMP are disabled.
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Sep 1, 2012
Sometimes the router has too many devices connected to it and the other people living with me don't understand this so they keep their iPhones, iPads, laptops, et cetera connected via WiFi even though I tell them to turn off the WiFi setting when they're not using it. So it kicks me off constantly, not sure why, but I don't mind too much. Basically when I'm "connected" but not really connected I remotely reset the router so I don't have to walk upstairs all the time.
I've reset it without troubles before. But did it tonight and now it's completely screwed up. I run a windows diagnostics test and it comes up with: "Wireless network connection doesn't have a valid IP configuration."
[URL] Here's my ipconfig /all
Code: Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:Windowssystem32>ipconfig /all
[Code]....
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Jul 6, 2012
I have a Netgear WNDR4500 running the stock firmware, acting as a router for my home. I also have 2 routers that are flashed with DD-WRT (Linksys WRT54G and Asus WL-520GU) running as client bridges. The Netgear is 192.168.1.1 and the other 2 client bridges are 192.168.1.2 and 192.168.10.3. The Netgear router is performing DHCP giving addresses from 192.168.10.100 to 192.168.10.254. I have numerous machines connected to the Netgear, wirelessly and wired, and numerous machines wired to each client bridge. All machines have IP addresses that are 192.168.10.100, 192.168.10.101, 192.168.10.102, etc... Everything is working fine, but I have one question: When I access the Netgear router, it shows the client bridges as clients, machines that are wired and wireless to the Netgear router are listed as clients, but the client list does not show any clients that are connected to the client bridges. I assumed that since the router is performing DHCP that all clients would show up.
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Jun 17, 2012
one of our customers wants to update the firmware of a 5508 wlc, but always gets the following error message:
Error Message %UPDATE-3-INV_FILE_SIGN: Error! Invalid image signature!. Image may be corrupt.
but the same image works fine on another 5508.the update was downloaded via a smartnet for the wlc, on which the update works fine. does the customer has to download another image for the second controller, or should the image work on both wlc?
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Dec 20, 2011
I am running a WRT320N with Firmware 1.0.04Trying to Upgrade the Firmware to 1.0.05 it always fails at about 24% progress with a message saying an invalid value has been entered.I downloaded the firmware from your homepage twice so that the file is not corrupted
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Jul 1, 2012
I keep on getting this error from my adapter I am trying to install. Here is what I copied.
Error description: Invalid key Manual
Model name: AE3000
Operating system: Windows 7 SP 1
Software version: 1.0.0.3
The password I had from my connection is correct. I checked it about 3 times, and it keeps on saying it is wrong? Does this mean I have to reset my router?
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Jun 24, 2011
I've got a setup like this:
WLC 5508 v7.0.98
6-7 Autonomous upgraded to lightweight APs - 2 * 1231G while the rest are 1242AG
3 dynamic interfaces, 2 to Corp (diff VLANs) and 1 to Guest
4 WLANs binded to different interfaces
2 to the Corp interface Vlan X
1 to Guest
1 to Corp Vlan Y
DHCP for Corp is provided by their own Win DHCP server while controller is the DHCP server for Guest. Lease time is 1 day.
My problem now is, some clients, at random, loses their IP after being connected to the network. They get a 169.254.x.x. They connect to the Corp network OK, no browsing issues but after a while, they lose their IP address.
They can either wait for a while before getting an IP back or just simple renew their IP on their machine.
I've tried increasing the threshold values in the Local EAP to double its default values and also setting the WLAN session time out values to infinite. However, these 2 didn't work. I'm still having clients that occasionally lose their IPs at random.
I've also noted that this affects clients with WZC wireless drivers and not others e.g. Intel Proset.
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Nov 27, 2012
We have WLC 5508 installed in our premises to which 80 1242AG APs are connected. Few days ago, all the APs all of a sudden disconnected from Controller and rejoined after 12 to 15 hours. when we try to investigate, there was regulatory domain conflict occur. But we didn't understand that those APs were configured with the same config before. How come they got diconnected and now rejoined without changing any configration in WLC?
Logs for both AP and WLC has been attahched here.
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Jan 19, 2011
computer was working fine a few days ago, all of the sudden not able to get online anymore at all,recieve error message 651 with dsl connection, and when trying to connect to wireless get an error message saying invalid ip adress configuration,
ipconfig/all reveals:
C:Usersygydfre>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : bygydfre-PC[code]......
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Apr 21, 2012
I am trying to add a new computer to my wireless statione access list but have not been successful. I got the ip address of the computer i was trying to add, my issue is how to add it to the list. i tried adding the details and filling in the device name and MAC address but kept getting the error message "invalid MAC address.please enter again.
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Jun 18, 2012
Your product is stable but not profitable For the price your customers is easier to buy a model Zyxel Correct firmware for the static route, or Dynamic Routing (RIP)LinkSys E1000 Enabled - Dynamic Routing (RIP) NO RESULTS!ZyXEL KEENETIC LITE - automatic routing!
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Nov 13, 2012
I have a EA2700 and will try to reserve an IP address to a PC, but getting up that address is invalid.I already have two reservations, which is 192.168.10.10 and .... 50, I try to reserve ...... 20 but am getting alert that this then is "Invaldi IP".
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Jan 27, 2012
im triyng to forward a port but when i click save settings it give me a message: "Entry 10: Invalid IP Address".
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Sep 1, 2012
I have WRT54G2 that I've set up my wireless network on. My Kindle, just the basic one, sees and recognizes the network. It has good signal from it. When I attempt to sign in though the Kindle says my password is invalid or it says it just can not connect. I have gone over and checked what I hope are all the settings but to no avail.
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Feb 2, 2012
My Dell studio XPS, wireless is not working. I am running Vista and Ubuntu. When running Ubuntu sometimes it loads with working wireless (only if I keep the wireless switch on at the time of booting). The wireless never works with vista. When installing the driver software it shows an error saying "The syntax of the INF is invalid"
The hardware I am using is Dell wireless 1515 wireless N adapter.
Error: The syntax of the INF is invalid.
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Nov 12, 2011
I have a logitec LAN-WH300ANDGR(not logitech) wireless router, it's been working fine for months. Yesterday I enabled port forwarding, but after that I kept getting disconnected from the internet.I updated the router, but no joy.So I disabled port forwarding but I still get disconnected and now I cannot access my router's webpage [URL] the page will not load.
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Apr 12, 2011
I was able to connect smoothly to any preferred connections in my area including my own. But now, it doesn't let me connect wirelessly to any of them. Now I typed ipconfig and this is what showed up.
Ethernet adapter Wireless Network Connection:
[code]...
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Dec 15, 2012
I am not able to connect my laptop wth router... There is APIPA problem in network.
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Aug 20, 2012
I bought a brand new acer aspire one 722 notebook and it works fine except I can't connect to the internet. After I run the diagnostics I get the following problem detected: "Wireless network connection doesn't have a valid ip configuration."
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