Cisco Wireless :: 1252 LAP - Configure Additional Antenna
Aug 20, 2012
I would like to add an additional antenna to a 1252 LAP but I'm unsure of a few things...
I know this LAP currently has at least a yogi directional antenna (AIR-ANT2410Y-R) and also a ( AIR-ANT2485P-R) connected to it. The access point is in a ceiling so I cannot view the connections but according to this data sheet, { URL } each of the antennas I've specified require 3 per AP. I am only aware of 1 of each being used so not sure why 3 would be required?
Also on my 1252 1 side has 3, 2.4Ghz connections for antennas, TX, TX&RX, and RX. If I want to only use 1 AIR-ANT2410Y-R, would this be connected to the TX&RX port? Do all antennas support transmit and receive or are there some that only support TX and others that only support RX or is this based only how you configure the antennas? On the other side of the access point there are 3, 5Ghz antenna connections.
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Oct 27, 2012
I am using two Cisco Aironet 1252 (cisco AIR-AP1252AG-A-K9) to setup a point to point link (one is configured as root bridge and is as a non-root bridge). Both Aironets are running software version Version 12.4(25d)JA.
Is there a way that I can that I can perform an antenna alignment test on the Aironet that is configured as a non-root bridge?executing the following command dot11 dot11radio 0 ? does not show the antenna-alignemnet option.
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Oct 2, 2011
I`d like to know if that antenna AIR-ANT24120 works with the LAP 1252 in a Mesh deploy.
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Sep 9, 2012
I found a few older forum posts and documents online discussing how to create multiple SSIDs on 1 1252 AP using the WLC and they state that VLANs are needed for the interface and then I've read that multiple SSIDs on 1 interface are also possible. I'm not sure on how to actually configure this. I would like my 2.4Ghz radio on the 1252 to be associated with the current SSID in production and the 5Ghz band associated with another SSID that's in production. I couldn't find an option in the WLC or anything stated in the documents I've read about how to associate the radio band with the SSID.
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Mar 7, 2013
I'm trying to configure my Cisco Aironet 1252's in my office to utilize their 5GHz antenna's but I've never worked with these routers before .
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Mar 25, 2013
Region : India
Model : TL-WR941ND
Hardware Version : V3
Firmware Version : 3.6
ISP :
We need to configure the AP in such a way, only 1 antenna to be used & not other two, to meet some mounting requirements/limitations. Will I be able to do this using any test/debug commands?
Essentially I want this AP to be operating in 1x1 spatial stream, & with no antenna diversity, so that I can connect only 1 antenna & be deterministic about AP using only connected Antenna RF port & not others
With out configuring anything, when I connect only 1 Antenna, I observed that signal is fluctuating on Client Application & causing the applications traffic stream disconnect.
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Dec 5, 2012
I have two Cisco Aironet 1252 that I want to configure as a point-2-point bridge. Now I want to know if this configuration supports the 802.11n protocol.
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Dec 16, 2010
I am replacing an older AP with a new 1252 unit. I attached everything and powered it up, but my DHCP server does not appear to be finding it and assigning an IP address. The status light stays green and the ethernet light blinks randomly green. Seems to be connected fine, but without an IP I cannot configure it to use it.
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Feb 17, 2013
How can i connect my laptop (11n supported) to LAP 1252 with WLC 7.0.116.0?Status: 11a enabled on wlcDCA channel list in 11a on wlc is showing only 149 153 157 161 channels.
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Jul 17, 2012
I have a lightweight AP that boots into RoMmon, if i hold the reset button in for 10 seconds or so it will boot into the IOS and download the config from the controller but never registers. then once i reboot it it goes back to Romon unless i hold in the button again.
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Jan 5, 2012
I have a used 1252 wireless AP. I can't get into it. How do I reset to factory default?
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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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Jun 20, 2011
Is it possible to Change IOS of 1252 LWAP AP to Autonomous AP? I have seen some documents for changing Autonomous AP to LWAP and change back procedures.
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Jul 1, 2012
we want to have full wireless coverage in a big warehouse (120mx90m) and 15 meter Height that will be having big racks (14 meters height) and 2 meter between the racks and the rack itself is 1.5 meter (2 rack back to back), now we will be having scanners and we need to make sure the wireless is covering everywhere.Where is the best place to put the AP, Ceiling? How Many APs per row ? each row will be around 60 meters length.
Is AP 1252 a good choice? The scanners are a/b/g.What i'm thinking of is to put 1 AP per row mounted on the ceiling and antennas facing down because it is hard to mount the APs between the rack because of the automated racking system.
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Sep 10, 2012
Currently my company has 1 primary SSID that is used throughout both floors of the building. We have 1252 LAPs which have 2.4 and 5Ghz antennas. I'm not sure if this issue is only with XP or perhaps it's the computer's drivers but we run into problems with end users going to a different location and having a very weak signal or nothing at all, yet coverage is fine. I believe the problem is the end user's machine selecting the strongest signal and it I have the feeling that switching bands isn't being done as it should when it's in range. So my question,
Should I split up our 1 SSID and created multiple SSIDs according to the location and include 5Ghz or 2.4Ghz in the SSID name so it's easier to ensure that users are connected to the proper signal? I want to ask if multiple SSIDs would still enable users to freely roam (as long as the ssids are configured) throughout the building without noticing a loss of signal but currently just having 1 SSID isn't really enabling people to freely roam around without connection issues.I don't believe having multiple SSIDs will be useful for the computer's choose their connection any more efficiently but allowing the user to manually see what they're connected to and pick something better according to their location.
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May 15, 2011
I am configuring a mobile van that is used for a mobile health clinic to drive to several locations and when pulling into an allocated parking spot the van will connect via wireless automatically. I am using autonomous 1252 AP's and am considering either briding or workgroup bridging.
The issue I am encountering is that the AP inside a van is a router that has to do DHCP across the wireless and because the ethernet interface between router and AP in the van never goes down the router does not know to re-DHCP. I remember from way back there was an IOS command to track a serial interface and drop the ethernet if the serial link goes down. Is there an equivalent command for AP's to drop the ethernet interface if the radio interfaces go down?
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Sep 1, 2011
We are using WiSM WLCs and WCS to control a variety of 1131,1142 and 1252 APs utilising AP groups.
I've noticed on WCS that the power of certain APs is at a low setting, even though the APs surrounding them are also at a low setting. This is causing some gaps to appear on the heatmaps. I was under the impression that the WLCs would regulate the AP power to compensate for any gaps. Currently the global TX power level assignment method algorithm is set to automatic every 600 sec.
Now, obviously I could change this to fixed (not ideal as I may not want all my APs to run at max power all the time) or to on demand (also not ideal due to the increased admin).
Is there a way I can verify that the automatic power levels are adjusting as they should? Why are there gaps appearing in my heatmaps?
*NB It's not just the gaps on the heatmaps, I'm getting reports of dropping wireless signals from users hence me looking at the heatmaps and they just happen to correspond.
WLC version 6.0.199.4
WCS version 7.0.172.0
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Apr 30, 2013
I have two 1252ag wireless access points running in lightweight mode, and connected to a 2006 wlc. They were both running fine until this morning. One of the 1252s won't stop rebooting itself. I consoled in, and this was the output -
*Mar 1 00:00:32.055: %LWAPP-3-CLIENTEVENTLOG: Performing DNS resolution for CISCO-LWAPP-CONTROLLER
*Mar 1 00:00:32.055: %LWAPP-3-CLIENTERRORLOG: DNS Name Lookup: could not resolve CISCO-LWAPP-CONTROLLER
*Mar 1 00:00:32.055: %LWAPP-5-CHANGED: LWAPP changed state to DISCOVERY
[ code].....
IOS Boot loader - Starting system. X modem file system is available. I'm particularly curious about this line -
*Mar 1 00:00:50.283: %SYS-4-PUPDATECLOCK: Periodic Clock update with ROMMON failed, because size left in ROMMON (4294967295), size needed (29), error code (-1)
The only reference to it I found online was a very vague "It's a hardware failure", but no further explanation.
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Oct 12, 2012
I have two 1252s on ports 1 and 2 off a Catalyst 3550. No other device on the switch except the fiber uplink.
Initially 1252 #2 (on port 2) resets for no reason at no specific time. We did not have a problem with 1252 #1.
The show ver on #2 does indicate that equipment resets due to power. I figured the 3550 is having problems powering two 1252s so had this AP on PWRINJ4 (validated its not drawing power via show power inline).
Today, #2 does not reset. However, now #1, which is the only device using inline power is now resetting. Same thing, reset due to power. Same weird behavior, at no particular time.
I've also have "no cdp enable" out off each port as i understand CDP sometime cause device to not boot up (15w versus 15.4w issue).
Both AP btw are Standalone IOS.
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Aug 2, 2012
I have three Autonomous AP´s in a small office running voice applications, all of them are connected to the same infrastructure switch and they have same configuration, voice Vlan is configure to open authentication. I have two models of AP 1252 and 1262 and I paste Radio configuration below.
First issue: During calls users are facing problems when roaming between AP´s, and eventually calls are dropped.
Second issue: Sometimes one of these AP´s(1252) lose all transmit signal and when return I got authentication error on log.
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Jan 18, 2011
Recently we had a situation where our users were unplugging one of our un-mounted 1252 LAPs. They would do this so they could borrow the wire to direct connect any one of their devices not realizing they were disconnecting a wireless access point. After discovering that the AP was unplugged once again, our admin plugged the AP back to the network but noticed that it no longer would connect to the controller. We can no longer console into the AP but can console into all other APs we have. All 3 lights are now green. Radio and Ethernet are solid and Status is blinking. I found the Cisco doc explaining the meaning of the front panel lights but have not found this particular configuration. What these lights mean and why not being able to use the console port?
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Jul 10, 2011
I am facing this particular issue while providing Cisco unified Wireless solution to the customer. We are having CAPWAP 1252 APs controlled by WLC.
Scenario: 50 persons sitting in a hall with closely packed chairs using wireless simultaneously. Wireless access provided by patch antenna at a height of 11m from the user. As one AP can server 25 users, 2 APs are placed with antenna directions facing the compact users. Each users gets very good signal from these two APs.
Whether there will be serious interference and client association issues in this scenario? once one AP associates 25 clients, whether other 25 clients associate completely to other AP?
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Sep 23, 2010
I was using Document 100787 as a guide.
1. I have 1252 & 1142 AP's connected to the Wism (6.0.188.0 code)
2. FWSM I have a 4402 (6.0.188.0 ) appliance connected as my anchor.
3. ACS is ver 4.2
All of my wireless networks function as expected. I see the successful auth in ACS. I just built a new WPA2 network and set it up to use Splash screen redirect. It doesn't seem to matter what I do it just wont work. IE or Mozilla.Test 1 was to drop the users at the wism. There was no splash screen.There was no evidence of my url-redirect in the wireshark trace.Test 2 used the 4402 as my anchor point with the same results. In both cases the client was authenticated and was able to navigate the internet and other duties. The problem is apon opening the broswer there is no redirect.
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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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Nov 8, 2012
I have 2 cisco Aironet 1252 setup as a point to point link using an external antenna (one radio is setup as the root bridge the other is setup as the non-root bridge). Now I see that the connection between the radios is established at a speed of 54 Mbps. However when I perform a speedtest on the link I see that the my actual download speed does not exceed the 2,5 Mbps. what can cause my actual speed to be far lower than the 54 Mbps? And what can I do to improve it?
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Nov 29, 2012
This is regarding an issue with one of my access point. The access point 1252 is autonomous one running the IOS version C1250 Software (C1250-K9W7-M), Version 12.4(10b)JDA3, RELEASE SOFTWARE (fc1)
The status of the dot11Radio 0 interface is showing as RESET. I have pasted the interface brief details below.
ap03#
ap03#
ap03#sh ip int brief
[Code].....
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Oct 25, 2012
In my class room, a lot of new Dell notebook (university purchased) all of those are the same model. Those came with 2.4&5Ghz WLAN NIC.
So, my WLC-based AP in that room which is Cisco 1x1042 & 1x1252 running in light-weight.This make huge congest on 5 Ghz. All of my 41 NB go for 5Hgz. And Zero client on 2.4Ghz radio, 2.4Ghz is not utilized at all.
I have read a lot of those related discussion. But I even can not find one that need to utilized BOTH of band. Most of those discussion talking to band-select which is "this feature only goes in one direction from the 2.4 GHz range to the 5 GHz not visa-versa."
My constrint is We can not touch the NB. Because this is university, much many diverse user loging in.
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Dec 19, 2011
how to configure Cisco 1252-AG-A-K9 Access Point Root and Repeater?
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Mar 29, 2012
I want to split the usage of the AP so that visitors are on their own wireless connnection and VLAN.We have 2 WAP4410N APs. One AP acts as a repeater for the another AP.They are both in 4.0.4.2 firmware.We are using WPA2 RADIUS authentication, and would like for visitors to use WPA2 PSK. Under Wireless tab, I have 1 SSID, but the other 3 available boxes for SSIDs are greyed out.When I click in them, they will not allow me to type an ID.I watched a video of how to add SSIDs and VLANs, and it looked simple enough.He just clicked in the box and was able to add more IDs.Could my current config be preventing me from adding additional SSIDs?
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Jul 27, 2011
I recently purchased another 1142 AP to expand out our current wireless infrastructure, my question is, what exactly needs to be done for this to work so that users can roam freely and auto-connect to the closet AP with the best connection without getting disconnected?
I have set all the settings the exact same on the new AP to match the existing AP. (How to save the configs into a file would be great, I am not sure how to do that)... But anyhow, before I launch it, I would like to be sure I am correct so I do not bring down the existing network. Of course, the only difference between the 2 are the IP addresses. AP1 is 192.168.2.2 and AP2 is 192.168.2.3
All computers are using Linksys Wireless-N cards.
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Oct 3, 2011
I am having some difficulties on finding information on how to setup two Cisco 1252 autonomous access points, via the command line. I am not having any luck finding steps on how to go about doing this and was curious if any one would be willing to give some insight. I am working on taking two of them setting one up as the root bridge and the other as non-root.
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Aug 1, 2012
I have around six number of Cisco 1252 Access Points on HReap mode and wIPS submode in one particular location. This was implemented more than six months and it was working fine. Suddenly, I faced Network conjestion and more bandwidth utilization in that location in particular. But, after disabling the wIPS in the AP, The bandwidth got stable and working fine. Not sure, if wIPS will utilize more bandwidth..
Does this will be anywhere related to the RF Heat maps that Cisco NCS will generate? As there is no map uploaded for that location, Will this cause an issue?
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Aug 25, 2011
at the moment we are using as default the manager interface as ap-manager interface.
Now I have to change the IP. I would like to change that very smooth with all our locations. My question, is it possible to add a ap-manager interface with a new vlan and IP Range, so that I can move the AP's to the second interface as as soon as it is planed with the location. Sometimes in special cases we have hard coded the WLC IP oder we just need to change the DHCP option but this needs to be planed and I see problem to do that in a hard cut.
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