Cisco Wireless :: AIR-LAP1242G-A-K9 - Devices Keep Disconnecting From Lightweight APs
Jun 12, 2012
I have several Lightweight APs (AIR-LAP1242G-A-K9) runing of a single WLC. We keep getting devices, sometimes all devices, losing network signal. The WLC is running a global power setup so all APs have their power set automatically. The setting for power parameters are default. I have noticed when I run a client test the APs run at 11Mbps while the client devices run at 50-54Mbps. The protocol used by both devices is 802.1G. These network drop offs are frequent and I should say may well be an issue with the client devices although there are several different types of devices experiencing this issue. My question is should the TX and RX rates be the same? Is it ok to have this disparity in the TX/Rx values?
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Dec 31, 2012
The network is constantly disconnecting from my devices and wont let me reconnect...I reset the network completely back to factory settings and started from there. Some of my devices didnt want to connect at all after the complete reset.These are the settings that I have changed: SSID has been changed,wifi security(wpa2 personal,AES) ,channel(width=20, channel=auto) ,DNS server(changed to Norton DNS: 198.153.192.40 & 198.153.194.40) & router management logon password & firmware upgrade to 3.0.03...
Router:Linksys WRT160N V1
Firmware:3.0.03
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Dec 10, 2012
I have a AIR-LAP1242G-A-K9. I have several question:
1. Does the antenna is a MUST for it to work.
2. If I have a 1 unit of AIR-ANT2422DG-R (antenna) , does the wireless access still work? Do I need 2 antenna
3. If I have a 1 unit of AIR-ANT2422DG-R, does 802.11 b supported.
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Mar 11, 2012
we do have a site where we need to deploy AIR-LAP1142N-E-K9 and AIR-LAP1242G-E-K9 APs. We have two AIR-CT5508-K9 controllers with SW version 6.0.188.0.AIR-LAP1142N-E-K9s work okay, as expected, we do not have any problems with them.However AIR-LAP1242G-E-K9s do not, there is a problem with establishing CAPWAP tunnel with the controller.The AP is seen on the controller for a while, with 0 time up-time, cannot change any settings on the AP via controller, and after a while it disapears from the controller, apears again and this repeats.
The APs and controllers are connected to the LAN campus.Controllers via two 1G links configured as Etherchannel to WS-C6506-E VSS switch with s72033-ipservicesk9_wan-z.122-33.SXI1.bin on it.APs to WS-C3750G-48PS with c3750-ipbasek9-mz.122-50.SE2.bin on it. 3750 is connected to the C6505 via two 1G links configured as Etherchannel.Below I copied the log I captured on 1242 and the controller. Highlighted ones are the ones which I think might bring a clue.
I performed some troubleshooting steps.
- As we have some other controllers available over WAN, I tested the 1242 AP with 2100, 4400 and also with the same model AIR-CT5508-K9 with SW version 6.0.188.0 over WAN and this worked always okay.
- I wanted to be sure that I eliminate any kind of out of sequence packet issue, so I brought down all redundancy L2 links so that the L2 path from the AP to the controller was only through one leg links.
- I also brought the second controller down to eliminate potential issue with having two of them up.
- The AP gets its IP from DHCP configured on the C6506 switch, I am always able to ssh to AP, so the IP connectivity does not seem to be an issue.
- I have more 1242s, all behave in the same way. I also connected them to some other 3750 switches we have in the campus, always the same.
- As this seems to be maybe a kind of ssl issue, I tried to play with controller settings, like enabling Accept... options under Security/AP Policy,but this did not work.
- I also tried to reboot the controller, no improvement.
- The APs came from the factory, so in the beginning everything was factory default in them. They were always able to download the image from the controller in the very initial phase. I still do have some of them untouched, so I can perform any troubleshooting steps with the fresh one.I can reproduce this, can also send debugging logs if needed.
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This Discussion has been converted into document:- [URL]
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AIR-LAP1242G-E-K9 10.0.13.28 log
*Mar 1 00:00:05.922: %SOAP_FIPS-2-SELF_TEST_IOS_SUCCESS: IOS crypto FIPS self test passed
*Mar 1 00:00:07.536: %SOAP_FIPS-2-SELF_TEST_RAD_SUCCESS: RADIO crypto FIPS self test passed on interface Dot1 1Radio 0
*Mar 1 00:00:07.672: %LWAPP-3-CLIENTEVENTLOG: Read and initialized AP event log (contains, 304 messages)
[code]....
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May 25, 2012
I'm working in a campus environment that has an existing wireless network using a Cisco AIR-WLC2112-K9 controller.There are 8 AIR-LAP1242G-A-K9 access points connected to the controller. Each access point has a 5.0GHZ 4.5dbi Cisco omnidirectional antenna, although the AP only supports 2.4GHZ.
Q1. Why a 5.0ghz antenna might had been used with a 2.4ghz AP, and if we can expect increased performance if we replace the antennas with 2.4ghz ones?
Q2. On the controller, the antenna gain is set to 0 for each AP. Is there also a benefit to leaving that 0 as opposed to 9 for 4.5dbi?
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Apr 24, 2012
I am working on installing a new 2500 Controller with 2 AIR-LAP1242G's attached to it. I have both registered and on the controller but I am having trouble moving one of them to a new IPS AP group that I created. Furthermore, I noticed the default gateway is missing from the static ip settings and I am unable to add that as well. When I add the default gateway and hit apply, the controller does nothing. Same thing for when I try to change my WIPS device to monitor mode.
A couple other things that I noticed is that when I go to AP groups and try to remove the AP's from the default group, there is no remove button when you go inside the default group like I see when i go into my IPS group.The AP's are on software ver 12.4(23c)JA3 Boot ver 12.4.13.0 and the controller is at 7.0.22.0I have already power cycled the controller and both AP's.
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Jan 29, 2013
This model is FK91105v1. It is great with our ten different devices (possibly even a dozen?), but it continues to disconnect a Kindle Fire - that used to connect with no problem - evidently upon acquisition of a newer Kindle Fire. As long as MAC Filtering is not enabled, then there shouldn't be an issue of a "white list" - which the Kindle manual suggests as a solution ("If ... filtering is enabled, ensure your Kindle's MAC address is added to your router's white list in your network settings"). (I did figure out how to go to the network address, but was mostly flumoxed from there)
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Jul 15, 2012
Our client have cisco 5500 Wireless lan controllers. They connect to core switch and other ports conenct to various switches on each floor. Then we have cisco AP 1300 series mounted on celing. I was reading that lightweight AP gets config from WLC as soon as they plug in. Need to know how the AP gets config from WLC switches?
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Mar 4, 2012
I have a air-lap1042-n-e-k9, how to put this wi-fi mode autonomous ?
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Sep 16, 2012
a few day l have 3 AP Ligthweight 1250, today l was checking my infrastructure and l saw that these 3 AP can´t join to the controller, l reset the AP to the, and its can not join, l checked physicly the AP, and the Ethernet Led is in Amber permanent and the Radio Led is in Green permanet , i am searching the status led to find the fix but l have not found these convination led. and l can not access to the consolo port.
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Apr 28, 2013
how to convert a 3502 access point from Autonomous to Lightweight ? 3502 has a new IOS released back in Dec 2012 to work as staandalone mode. I need to convert this back to Lightweight mode.
I have been searching on web but have had no luck so far with anything. Tried converting it to lightweight in the same way as putting it on Autonomous IOS but errored out.
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Feb 28, 2013
how to convert a 1602i AP from lightweight mode to autonomous?
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Feb 19, 2013
I have a problem converting 2602 from lightweight to autonomous. It will not boot to the autonomous IOS. The procedure below is waht I did.
ap: set IP_ADDR 10.0.0.1
ap: set NETMASK 255.255.255.0
ap: tftp_init
[Code].....
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Mar 24, 2013
How can I upgrade my 1041N AP to lightweight firmware? I found an upgrade tool which works in only XP and 2000 machines. I do not have these outdated OS so is there another way to upgrade it to lightweight?
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Nov 8, 2012
Here is what I am attempting to do.
1. I have a 1042N AP configured as a Workgroup-Bridge attaching to a Lightweight Access Point.
2. LWAPP AP is on a 5508 series Controller.
3. I have MAC Authentication configured through an Ciso ACS box running 5.2 code. And that portion is working.
4. I want to lock this WGB down even further with a second layer of security. I am thinking WPA2 -AES.
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Nov 11, 2012
We have a couple of smaller remote locations running cisco 1811W routers (built in switch ports & wireless).Now I have been tasked with determining if the wireless portion can be converted to Lightweight or not; if so what is required.
I am running
WCS 7.0.230.0
WLC 5508 (same code)
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Nov 15, 2011
How to upgrade C3502i to Lightweight? I failed to upgrade using Upgrade tool v3.4. The error message is "AP model is not supported" . how can I upgrade it?
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Jan 30, 2013
Is there any difference between AIR-SAP2602-x-K9 with lightweight IOS and AIR-CAP2602-x-K9?
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Nov 10, 2012
Is it possible to convert an Autonomous AP 2602i to Lightweight just changing firmware as the first generation Aironet APs?
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Apr 15, 2012
Apparently converting autonomous 1142N to lightweight is not supported by ether WCS 7.0 or the Upgrade tool. The option is to do it manually with CLI, but there is about 200+ AP's that need converting. We can't do them all at the same time. We have to do it building per building.
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Apr 30, 2012
Doing the firmware upgrade on a 1041n AP from Autonomous to Lightweight. Downloaded from Cisco, checked MD5 and got a match so went and upgraded. Upgrade went find etc.. and rebooted. When I reboot I get the following error and then rubbish text
DDR values used from system serial eeprom.
WRDTR,CLKTR: 0x83000800, 0xc0000000
RQDC, RFDC : 0x80000037, 0x0000018a
PCIE0: link is up.
PCIE0: VC0 is active
PCIE1: link is NOT up.
[code]...
I rolled back to the autonomous OS and all ok and AP operates as normal. When on the lightweight IOS I can get a telnet response but cannot access as it states Password require but not set.
Followed this process to upgrade [URL] and followed this process to restore to Autonomous: [URL] why it's not working.
Update: Just tried another AP same result. Downloaded Lightweight again and same result
Here is the CLI upgrade process
examining image...
Loading c1140-rcvk9w8-tar.124-21a.JA2.tar .from 172.16.4.114 (via BVI1): !
extracting info (273 bytes)
Image info:
Version Suffix: rcvk9w8-
Image Name: c1140-rcvk9w8-mx
[code]....
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Mar 24, 2013
Is AP 1220B (b-only radio) supported for registration to WLC (7.0.x) with Lightweight software? I've managed to convert the AP to Lightweight mode, but I could not get it to register with WLC 2504 (software version 7.0). Is it possible that this AP is only supported if changing the in-built radio module?
In the compatibility matrix [URL] there is an information that this AP is supported on WLC up to version 7.0.x. On the other hand it is not supported by Autonomous to Lightweight Mode Upgrade Tool [URL] Since these APs does not have pre-installed MIC, it is mandatory for them to create Self-Signed Certificate (SSC). Upgrade tool could do this job (along with adding the created SSC hash to the authorized list on WLC), but it does not support this particular AP/radio. If I do the conversion manually (archive download-sw ...), the AP does not have the SSC needed for communication with WLC. I've tried making the SSC manually (instructions found on this site [URL] while AP is autonomous mode, and then converting it to Lightweight, but the AP still could not register to WLC.
In the debugs (on WLC/AP), I am receiving an error that is described in some Cisco troubleshooting documents as something related to WLC not having an SSC hash in the auth list. Problem is that the AP is not even sending standard CAPWAP messages and there is nothing to be seen in "debug pm pki enable" on WLC...
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May 21, 2012
is there any issue in buying air-ap1142n-ek9 802.11A/G/N FIXED AUTO AP INT ANT and later on converting it into lightweight under the control of air-ct2504-15k9 2504 WIRELESS CONTROLLER WITH 15 AP LICENSES ?Are there any requirements on the SW of the WLC and the IOS of the AP? The reason of the choice is budget.
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Jul 12, 2012
This is one of our first site where we are implementing Cisco wireless, and we bought some external Autonomous AP1262, when we should have bought Lightweight LAP1262 . We can get those replaced, but I am looking into migrating them in order to get them to register with our 5508 controllers.
There do not seem to be a migration tool to download for 1262. Must it be done via the WCS ?So far I have not managed to add these autonomous AP to the controllers. How to know if a migration toll exists for those !
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Aug 22, 2011
I have a Cisco WLC 5508 managing several 1252s in lightweight mode. There is a portable across campus that has a standalone network but no cabling to tie in to the corporate network. I have another 1252 that is in autonomous mode. Could I essentially configure that as a bridge with the same security and SSID in order to bridge the corporate WLAN? If not, what are my options?
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Apr 20, 2012
Is it possible to convert a 1041 in Autonomous AP mode to Lightweight? Since on the cco page there is no upgrade tool under the 1040 series AP,and also i didnt find any document with the procedure.
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Apr 3, 2013
I have a 5508 controller, just upgraded from 6.0.182 to 7.0.98.0. Also LAG was switched off directly after upgrade.
Since the upgrade none of the 1142 LAPs are associating with the controller. I can see they are being issued IPs by the internal DHCP but putting a console cable and watching I am getting:
Not in Bound state.
*May 4 11:41:17.759: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
*May 4 11:41:17.759: %CAPWAP-5-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
One Ap prior to the upgrade was on a static IP and that connected through without any problem, (it was an 1131 though, but I dont think that is the issue...)
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Apr 4, 2012
Does the Cisco 1262N Lightweight Access Point (AP) work's with Wireless LAN Controller 4402?
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Feb 4, 2013
What 113X AP model will work in Autonomous and LightWeight Mode? I want to buy some 113X AP's for my lab and want to make sure I don't get stuck with the ones that only run in one mode. I am looking at buying this one AIR-AP1131AG-N-K9 802.11a/b/g. Will this model work in both modes?
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Mar 29, 2012
I have 2 units Cisco WLC 5508 running software version 7.0.220 with 70 over units Cisco AP 1262N and 1242AG. Some of wireless clients having problem to get the correct IP address from the DHCP server. There are 2 units of Microsoft DHCP. Both DHCP server ip have been configured on the Interface at the WLC. The core switch also being configured with ip helper. I've attached the debug output of one of the wireless client during the problem.
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Mar 22, 2012
I'm wondering if there is an easy way to change the regulatory domain on a lightweight access point. The reason I'm asking is someone accidentally placed an order for AIR-CAP3502I-N-K9 access points instead of the AIR-CAP3502I-A-K9 flavored ones. I can see how it happened, since undoubtedly someone asked for the "N" access points, thinking 802.11n, and the other person was thinking AIR-CAP3502I-"N"-K9.
do I have to RMA them, or is there a way to magically turn them into the ones flavored for the Americas?
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Jun 6, 2013
I have AP AIR-AP1231G-E-K9 with iOS c1200-k9w7-tar.123-7.JA2 and I want to convert it to Lightweight Mode with iOS image c1200-rcvk9w8 tar.124-21a.JA2. First of all, is it possible? Because I tried to convert from tftp server command (archive download-sw /overwrite /reload tftp://ipaddress/image.tar) and I cannot see in the controller. (controller and aps are in the same network)
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Jul 9, 2012
I created a LAP Template in NCS to configure some new 1142 LAPs that were installed in a remote office. These LAPs need to be in Flex Connect mode with V LAN support. The template is being applied with partial success on every access point. Details of the partial success say the Flex Connect Parameters fail with the following error.
Provision Failure: { URL}.Object Not Found Exception cannot be cast to [URL]
Am I doing something wrong? The Flex Connect portion of the template has V LAN Support enabled, Native V LAN ID, and the Profile Name- V LAN Mappings configured.
Prime NCS version 1.1.1.24 Access Points are AIR-LAP1142N-A-K9s running 7.2.110.0
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