Cisco Wireless :: Aironet 1240AG Error - Previous Authentication No Longer Valid
May 8, 2007
I am an IT professional that is installing my first extended range wireless AP in my companies warehouse. I am very excited!
Now I have set up many a linksys and repeater wireless networks, so when I was looking into the Aironet 1240AG I thought ?No Problem!?
And at first, it is not!
I have the AP and antenna set up here in my office before I take it out and mount it in the warehouse. And I can get connected to it, no security for now, no filters, I just want to connect and make it work.
I stay connected for maybe 3 minutes, I can get to the internet, I can ping all my servers. Full connectivity. But then for no reason the connection fails and I cannot reconnect.
The error I get in the log is
Interface Dot11Radio0, Deauthenticating Station 0006.2510.bbe3 Reason: Previous authentication no longer valid
So strange! So I have reset the AP to factory defaults and then set the SSID, and I can connect, again for a second, then nothing.
I have tried with multiple wireless cards, even laptops. Thinking maybe the problem was on the computer side.
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Sep 28, 2012
For 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-0500 Information Interface Dot11Radio0, Deauthenticating Station 0c77.1a3a.6ff7 Reason: Previous authentication no longer valid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
[code]....
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Apr 29, 2013
We are using an Aironet 1240AG series wireless AP here to connect handheld scanners. They work fine on WPA. However, when we switch to WPA2, they often lose connection. We have tested on 802.11g and a bands, with various encryption types (TKIP, AES, TKIP/AES). Also, how can I update the outdated firmware without signing up for a service contract?
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Feb 11, 2009
I got 4 aironet 1310 Πbut i don't have password into Enable mode!. I follow this document "Password Recovery Procedure for the Cisco Aironet Equipment.pdf" to recovery password. It succeed reset password to default Πbut it also reset Previous setting to default.
Can I reset aironet 1310 password and keep Previous setting?
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Apr 8, 2013
I have a question regarding cisco aironet 1240ag AP.
1st - Does this devices has a firmware ? So I can update a firmware ? or is an image file for IOS software ?
2nd - Which wireless controller I can use to handle multiple aironet 1240ag AP's ?
3rd - The controller has the ability to create temporally guest password ?
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Jan 23, 2013
I work as Network administrator in a building products plant at Poland. We had core switch HP Procurve 6200yl with 5 vlans, and 11 Aironet 1240AG Access points without controller. I have a problem with create 2 wi-fi VLANs on the Cisco AP's and linked it with HP switch.
VLANs on the switch:
1 - Default (for office sutff) - working great,
2 - Production (for production stuff) - working great,
3 - Inter (for Router's) - working great,
4 - WMS - i need configure it as wireless,
5 - WiFi with Radius - i need configure it as wireless.VLANS on the Access Points:
4 - WMS - for warehouse terminals - WPA2,
5 - WiFi for office stuff with Radius.
I'm easily able to get it running a single SSID (non-VLAN) network and confirm that I can use that network fine. However, I need to set up these 2 VLANs. I can connect to it via telnet if that'll let me program it faster.
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Mar 11, 2013
I have a Cisco 1941 ISM. It sits between my Fortinet Firewall and the Internet. I tried to console to it so I can backup the configuration. Is there any way I can do this as I do not know the name and password for this unit as the previous net admin is no longer employed.
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Oct 8, 2012
We have Cisco Aironet 1240AG Wireless AP's in out network. Now, we have some PC's, laptops and mobile phones connected with with this AP and all devices are working fine. Now suddenly from today when I am trying to associate some new devices to the AP it is not working means the devices are not associating.
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Jan 31, 2012
I have a "standart" settings of Cisco Aironet 1240AG with ENABLED broadcasting SSID, encryption is WPA2 (AES). I can see the wifi network (ssid) with windows system but with MAC OS 10.5 and MAC OS 10.7 also with iPhone the wifi is acting like hidden. But If I manually enter the wifi ssid and set the proper encryption the connection work normally. Also I have a separete windows partition on one MACbook and this windows 7 have no problem to see the SSID of my network. But If i Boot to the MAC OS the WIFI is "hidden" until the manually connection. (same problem on iphone, manuall connect with manually entered SSID is working well).
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Apr 11, 2011
What is the average/maximum distance coverable by Aironet 1300 and 1240AG ???
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Aug 17, 2011
I have a Aironet 1240AG and have our main SSID set up on Radio0-802.11G. It uses WPA TKIP. Everything works fine on it. Recently we have been getting a lot of visitors who need wireless access, so reather than hand out our main key to visitors, I decided to create another SSID on Radio1-802.11A for guests. For some reason the new SSID does not show up on the available networks on client devices. You can connect to it manually by entering the name and key. But how do I get the SSID to broadcast on the 2nd SSID. A lot of these guests are not very computer smart, so it becomes a real pain to have to walk them through connecting to the guest network.
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Jan 27, 2013
I have a Cisco Aironet 1240AG Access Point and I am trying to setup a guest network that is secure and limited in bandwidth utilization. I see an option under security > SSID Manager on the web interface to select an interface of Radio0-802.11G, Radio1-802.11A or both. Can I put the guest network on the Radio1-802.11A and make it more secure/bandwidth limited or does this option not matter?
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Dec 18, 2012
Recently we updated to the Anyconnect 3.0 client. I see the new 3.1 client is out and we are currently testing it for production. My question though is since updating to 3.0 our end users receive a message at the bottom of their client stating "No valid certificates available for authentication" They can still VPN in since we dont do certificate based authentication but we have been getting tons of questions on this. I would like to stop these messages from appearing and I am not sure if its just how the new client behaves or if its something configured on our ASA's.
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Nov 18, 2012
About 2 weeks ago, my wireless adapter and ethernet port stopped working all of a sudden. When trying to diagnose, I got the Dagnostic Policy error 5. On the basis of other postings on this subject, I have tried restoring an earlier restore point, uninstalling/reinstalling the network adaptors, have tried to run net localgroup Administrators /add networkservice & /add localservice, have tried adding permissions for mpssvc in regedit (DSP parameters). For the hardwired ethernet adapter, it worked but for my wireless adapter all failed so far. Output from sc queryex DPS > 0 is as follows:
SERVICE_NAME: DPS
TYPE : 20 WIN32_SHARE_PROCESS
STATE : 1 STOPPED
WIN32_EXIT_CODE : 5 (0x5)
SERVICE_EXIT_CODE : 0 (0x0)
CHECKPOINT : 0x0
WAIT_HINT : 0x0
PID : 0
FLAGS :
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Mar 28, 2012
I try to setup a 1141 aironet AP to authenticate my user through our Ms Radius Server ( Win 2008 R2).Everything is fine with small Bussiness AP WAP4410N with the following configuration:But I can't setup successfully the aironet 1141 with the same settings and getting it works.Here is my configuration for the Aironet 1141 Vlan 1 is the ssid I want to get it work with Radius.
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Aug 14, 2011
Is there a way to configure client/user to AP authentication without using encryption for joining to an wireless network? What we need to do here is protect network access at our hotspots by enforcing a password to get connected. The other part is making it compatible with every possible device so we need to have encryption off. We have a mixed environment at this time until everything is upgraded. Aironet 1200 series and some new Aironet 1142 models. No controller, all standand alone AP's
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Jan 22, 2013
I would like to be able to have a few "guest" users on the Wireless network for visitors. Is there any method to have a prompt for "Username / password"? I would like the user accounts to have different expiry periods if this is possible. My current config is attached. The SSID "test" appears on the network. The SSID "test111" does not appear.
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Sep 14, 2012
I'm using the Express Security Set-up tab to configure an Aironet 1142 (stand-alone) access point with EAP.
Objective is to make it a RADIUS client and have laptops authenticate through this access point to a Windows 2008 NPS (Network Policy Server) using computer (machine) certificates - EAP-TLS.
When I select "EAP Authentication" under the "SSID Configuration" I was literally floored to see mention of WEP encryption (a security joke) and no possibility to prefer some variant of WPA (well, apparently not with EAP).
WPA2-Enterprise is what I've selected for "Authentication" and "AES" for encryption in Group Policy (so the laptop clients automatically connect to the access point).
WEP? I bought a Aironet 1142 access point for WEP encryption? How can I configure this securely?
These are currently configured settings as displayed under the "SSID Table" heading:
SSID - "MYSSID"
VLAN - none
Encryption - WEP Mandatory !!!
[Code].....
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Feb 22, 2013
I am evaluating a Cisco wireless solution for our building. The building is occupied by two separate but related companies, which share some basic network infrastructure (some switches, an Internet connection, a DMZ environment), but which have two completely separate "Windows networks" with separate Active Directories. Each of these two networks are placed behind separate Microsoft TMG firewalls, each of whose external NIC are connected to the same DMZ network.
a) Acquire a set of Aironet 2600 APs and a controller, b) establish a BYOD SSID to be share between the two companies and guests, connected to the shared DMZ network, c) establish two additional separate SSIDs - one for each company’s staff, each authenticating against the appropriate AD-environment (incidentally, one is a straight Windows Server 2008 R2 environment with a TMG 2010 firewall and the other uses Windows Essential Business Server, so based on Window Server 2008).
Is that even possible with a single WLC?We are on 3 floors and about 60 people total. I am thinking that we can make do with 5 or 6 APs. Without having looked into it much, the 2500 controller looks good. Agree?
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Jun 11, 2012
an Aironet 1252 which is failing on boot. When power on the access-point shows the error below.
WARNING: A memory error occurred during the system start-up self-test. The device must be serviced if the error persists.
The following commands can, optionally, be used to initialize the flash file system and the TFTP file transfer system:
But when this happen, I can start the IOS manually doing flash_init and boot in ROMMON. After do this commands, the access-point starts and works normally.
How can I check and correct the memory and solve this issue?
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Mar 16, 2012
I cannot connect to the internet. After running troubleshooting i receive and error message."Local area connection 2" doesn't have a valid ip configuration.
[code]...
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Aug 24, 2011
I just got my internet hooked up in my new apartment yesterday, and it is not working when plugged directly into my laptop. It worked fine on the installer's laptop.A buddy of mine let me borrow his wireless rory to connect. I've tried disabling IPv6, restarting both the modem and my laptop, and updating the ethernet driver, which I could not find (HP dv2715nr is my model and I have windows 7 ultimate). elow is my ipconfig with the modem plugged in and the wireless turned off.
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:UsersAllan>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Allan-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
[code].....
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Apr 2, 2013
I have just setup a new WLC 2504 controller to manage a WiFi service that will span 6 geographic locations. The local networks at each location are on different subnets (all 192.168.x.x) and are linked up via IPSEC VPN links, and there is Active Directory spanning the sites, with DNS and DHCP servers running at each location.
I tested the WLC at our main office with a single AP, and it worked fine. The AP set itself up, and wireless devices connect with no probs. Great! Yesterday I headed out to one of our remote sites, and connected an AP to their network - and that seemed to work fine too. Within a few minutes I was able to see the WiFi network I'd setup, and my smartphone connected to it straight away (as I'd rpeviously connected at the main office), so I was pretty happy that all was working well.
This morning however I've had notification that wifi performance at the remote site isn't great. I've got someone to check their ip address, and I've found that their IP address and default gateway match the LAN at the main office where the WLC is based - NOT the LAN where the wireless client is. Obvioulsy this is not ideal!
(I guess I HAVE done something wrong!?). And how can I get wireless clients at remote sites to pick up an IP from the DHCP server at THEIR site?
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Aug 2, 2011
I've set up a Cisco Aironet 1301 AP to be used for a guest network. I've got several other of the Aironet 1140-series around the business but none of them are in reach of this one at the moment.
The problem I have is that clients that try to connect to the AP are either not able to connect at all or lose their connection after some seconds. The config is more or less copied from the other APs with the same guest VLAN.
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Feb 29, 2012
I have a windows 7 computer and a windows 2000 on a wired network. The windows 7 and 2000 previously played nicely although it was a bit of a pain to get it to work the first time, don't really remember what the issue was. I have a big old CAD plotter connected to a parallel port on the windows 2000 computer and previously was able to use it from the windows 7 computer. I was also able to access any file on the windows 2000 from windows 7, it all worked fine a few months ago. I haven't had the win 2000 computer on for a while but recently needed to use the plotter. I now get a log-on error when trying to access the win 2000 from the win 7, but it shows up on networks. The log-on error window shows a domain with the name of the windows 7 computer listed as the domain name, but nothing is set to be on a domain. I can access the files on the windows 7 computer from the win 2000 computer with no issues in that direction. There is no home group set up (think that was the issue the first time) Windows 7 is always updating itself and I suspect that's part of the problem, I am guessing something went back to a default during an up-date but I can't find it.
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Dec 19, 2012
When I get the web authentication dialog from 1.1.1.1 it starts of with a certificate error. Is there a way to prevent this certificate error while using the self signed certificate? I have not been successful installing certificates on my WLC - problems with OpenSSL and others. Want to get this deployed but don't want users to have to encouter that error.
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Sep 13, 2012
I have 3 Aironet 1260's with the same SSID and set with Open Authentication with MAC Authentication. Can I designate one of the 1260's as the MAC Authentication Server? I have all 3 now working with MAC Address Authenticated ty Local List Only and have to put the new MAC address in all 3.
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Jun 3, 2012
I have a Cisco Aironet 1140 with ENABLED broadcasting SSID, encryption is WPA2(personal). Ubuntu 12.04 and Windows 7 are authenticated, but MACBooks never be authenticated. Any specific configuration for MAC books?
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Apr 29, 2013
I have a device manufacture there are requesting the following change on a customer's WLC 5508.
-config advanced eap identity-request-timeout 60
-config advanced eap request-timeout 60
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Dec 9, 2012
i have a problem with 1552E to register with 5508 WLC, and always got "AAA authentication error” in the WLC log, while AAA is not enabled. so my question is , do i need to add the MAC address to the WLC MAC filter list even if i not enable the AAA server in the WLC.
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Feb 3, 2013
On an AIRONET 600 AP (officeExtend) with the remote LAN interface is configured to use 802.1x authentication:If a Cisco IP Phone is connected, 801.x authentication challenges for credentials. The AP does not seem to have a way to detect that this is an IP Phone and to skip the challenge (as Cisco switches/routers would do) Is there any way around this? Can the remote LAN interface be configured to skip authentication for IP Phone and only authenticate PCs etc..?
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Sep 7, 2012
I configured ACS 5.3 and added AAA clients with TACACS+ server and shared secret key as cisco123. i did the below config on switch also. when i try to authenticate login with ACS it does not respond. Find the configuration and debug output.nd
In debug output it gives ruser and rem_addr is null. i did not understand why .
I am able to ping to ACS server and i used telnet 192.x.x.10 49 and it gives the proper output.
aaa new-model
aaa authentication login default group tacacs+ local
!
tacacs-server host 192.168.60.10 key cisco123
tacacs-server directed-request
ip tacacs source-interface Vlan172
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Mar 29, 2012
What are the pros and cons of 2.5 Ghz and 5Ghz spectrum ,My customer wants 1240AG and the antenna for those are either 2.5 GHz or 5GHZ and wants to know which spectrum is better for him to use
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