Cisco Wireless :: Dipole And Monopole Antenna With 1250 AP
Mar 20, 2012
I have a customer using 1250 AP with monopole antenna, he face frequent disconnection for voice clients during roaming. Phone is forced for reregistration to call manager during the hand off. Same customer has dipole antenna in a different floor with 1250 AP and there is no issue observed for voice clients.
Is this an issue with monopole antenna ? Which is the best antenna to recommend for Cisco APs or wht is the occasion I need to use a dipole or monopole antenna ? How to understand the difference between them.
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Apr 3, 2008
When using dipole antennas such as AIR-ANT 4941 with the 2.4 Ghz 1250 AP, must the antennas be spaced EXACTLY as far apart as the antenna connectors on the AP, or can the dipoles be spread further out, say to 4" spacing.
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May 7, 2012
I need to upgrade a 1230 to the new Aironet 1250 at a location. I have only 2 external antennas at that location.
I understand that you still can run 802.11n with 2 antennas. But I can not find anywhere in WLC 5508 v7.2 that I can disable the middle nut (C)
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Nov 14, 2012
When have downloaded the c1250-k9w7-tar.152-2.JA.tar and attempted to load into a 1250 via tftp the process aborts with the following message. [code]
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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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Oct 20, 2011
I've just got a new AP 1250 series, and I was trying to configure the Radio for the 2.4Ghz spectrum using the interface dot11radio 0 and I've just noticed that this controller is not present so I cannot configure it so I wonder is it could be a HW problems as it looks to me or there is another way to enable this.
I never have an issue like this before so I want to first check with you before going back to our vendor.
Here is some of the details I get from the AP itself:
System image file is "flash:/c1250-k9w7-mx.124-10b.JDA3/c1250-k9w7-mx.124-10b.JDA3"
ap02#sh controllers dot11Radio 0 ^% Invalid input detected at '^'
[Code].....
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Dec 29, 2012
I can no longer open a http or https connection to the AP. I do have ssh access and I can log in with full privileges.
I was using the Web interface a few days ago and it did something strange during an update. The display of the web page became corrupted and no longer responded to my input.
I restarted it from an ssh session and I have also power cycled it via the power injector. Neither method has worked.
What should I do next or what additional info can I provide from an ssh shell?
Physical access is very difficult. It requires a 30' ladder after 10 p.m. So, I would like to avoid that if possible.
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Aug 25, 2010
upgraded my home AP from Autonomous to Lwapp. I was an Idiot and thought i was getting an IOS upgrade. I need to revert it back to autonomous and a simple "mode" button reset doesnt work. I read that I need to Reload original IOS software, but It appears I cant get it without a support contract. I cant afford servicenet and need to obtain old ios to revert to factory default 12.4(10b)JA1. Do I need a contract to roll back? Is there an archive (backup image) of the old IOS that could be still stored on the device. I didnt back it up and need to obtain the image.
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Jul 7, 2011
How many SSID can be create in a 4404 controller and also in standalone 1250 AP? How many VLANs can be created in eac one?
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Jun 11, 2013
I have an Aironet 1250 AIR-LAP1252AG-A-K9 I am having issues with, and I am hoping for some direction on how to resolve them. I understand this question has been posted many times many different ways, but i have no luck unfortunately. Here is where I am: I can terminal into the AP, which has been set to factory default, with the username and password and enable password of Cisco. Once I am in the enable mode, I get lost.
Usually there would be an option to go to config. t, and work from there, but this AP does not have that option, Actually if I do a ? at the enable prompt, the commands list only starts with the letter C; but none are config.
I also cannot get into the web interface of the AP. The AP gets a DHCP IP from my DHCP server, (192.1681.128/24) but I cannot get into the web interface using the IP it gets from DHCP. The page never comes up. To add to the confusion, I cannot turn off the CLI event logging, although I enter the command "no debug all". Maybe I am off on what to put in. Nonetheless, it drives me crazy with messages every two seconds as I am trying to type while attempting to figure things out.
Overall, from reading the forums and doing Google searches, I am going on the assumption that the AP is now in lightweight mode, as opposed to autonomous mode, which is where I want it to be. I have tried the method of updating the firmware to the autonomous firmware from Jan 2013 for the AP. I use the TFTP method as I have found here on the forums a few times; I hold the mode button down while applying power to the AP, let the system LED turn red and release the button so the TFTP process can go through, but nothing changes.
I have the AP powered from a gigabit POE switch. The computer I am using for the TFTP is on the same sub net as the AP. I have tried using 10.0.0.6/24 for the computer with the TFTP on it, made sure the view all file extensions option was checked, and renamed the firmware to the .default extension-still nothing updates.
I also noticed that once I hold the mode button down for 20-30 seconds then let it go, the CLI output says the AP it is on the 10.0.0.x sub net, but I cannot ping the computer with the TFTP program on it. If i try to, it get a "Command not supported" message. So I will go on the idea that this is most likely why I cannot do a TFTP update.
About 30 seconds after I release the mode button and the AP boots, it will say it has a 10.0.0.x IP address, then it starts going crazy with messages that it cannot find a DHCP server.
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Sep 3, 2012
I have a cisco wireless power injector for Aironet 1250 but I called Cisco and was told this can't be found in the system.
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Dec 19, 2009
We are facing an issue with a customer where a Cisco 4400 Series controller is blocking the 802.11a/n Radio Interface of a 1250 AP. The radio shows as down on the controller GUI. The error message on the GUI is that the 'Regulatory Domain' is not supported. This can be seen from the attached screenshot. Also relevant parts of the WLC configs are attached. WLC: Cisco 4402 WirelessWLC Country: SADevice: Cisco Lightweight Access Point 1250 (LAP) is controlled through the 4402 Cisco Wireless LAN Controller (WLC)The operating system version of the LAP: c1250-k9w8-mx.124-18a.JA version of the WLC: Software Version 5.2.178.0 The problem is that the controller shows that the 802.11a/n Radio Interface in Radio Slot # 1 is always down , the customer tried to manually 'no shut' the AP interface from the console and it worked , but obviously this solution would not work as the configuration cannot be saved (LW AP).
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Mar 6, 2011
I just started a project to make a guest wireless network available at every site in my enterprise. Guest wireless networks are currently available at some sites. Two key goals of this project is to enable WPA/WPA2 encryption and to develop a web based registration/autentication solution. All of the sites have a mixture of 1230, 1240, and 1250 autonomous access points. What do I need to do/get in order to make this happen?
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Mar 8, 2011
In a multiple SSID setup, can Aironet 1240 & 1250 series AP supports different WEP key for different SSID
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Aug 10, 2011
I have an Aironet 1250 Access Point. I was asked to upgrade the software on the access point so I downloaded c1250-k9w8-tar.124-23c.JA5.tar and tried to upgrade it from IE9 browser window. I allowed the upgrade to run overnight. It ran for 900+ minutes before I unplugged the router. I know it said not to interrupt the upgrade, but it seemed like something was wrong.So, I have the access point conntected to my computer with a blue cable and it is also connected to the network. I tried running Hyperterminal hoping that I could set the ip address or otherwise connect to it.
The Hyperterminal printout gives me this:
APc89c.1dfd.189a#*Aug 22 20:10:03.523: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.Not in Bound state.*Aug 22 20:10:12.027: %CAPWAP-3-ERRORLOG: Invalid event 38 & state 2 combination.*Aug 22 20:10:12.095: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 159.169.59.114, mask 255.255.255.0, hostname APc89c.1dfd.189a
Translating "CISCO-CAPWAP-CONTROLLER"...domain server (159.169.59.39) (159.169.59.25)
Translating "CISCO-LWAPP-CONTROLLER"...domain server (159.169.59.39) (159.169.59.25)
Is it possible to get this access point working again? How would I get it working again?
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Mar 22, 2013
I am new to the NCS implementations and configurations. I have one very specific case with Cisco Prime Infrastructure 1.2 and autonomous APs and several issues with Cisco VSS on 6500 switches. So here is the version from Prime:
NCS/admin# show version
Cisco Application Deployment Engine OS Release: 2.0
ADE-OS Build Version: 2.0.1.038
[code]......
Well the issue what we have now is that access point has been added but its not recognized by the NCS prime. I have tried all three versions of SNMP but I get the same result. The SNMP configuration is valid since I use the same for my switching infrastructure. When I enter "debug snmp packets" and "terminal monitor" I can see the SNMP communication between Prime and Aironet 1250 which is standalone.
When I switch to Life cycle theme and go to Operate > Device Monitor Center I see all devices I have added. The Aironet 1250 is reachable but under collection status I get Managed with Warnings. When I hover over with my mouse I get "None available".
I have successfully added my switching infrastructure in total, which is operating perfectly for Catalyst 2960/3650/3750/4500 series but for 6500 under VSS I have some warnings. The device is recognized by the system which is excellent and all is operational. I get the following errors under Collection Status:
feature_sensorSNMP request timed outfeature_powerSupplyFanStatus-6kSNMP request timed outIdentityCapabilityThe device is unreachable.feature_flashdeviceSNMP request timed outsam_ipsla_featureThe device is unreachable.
What can be done to resolve these issues ? I have attached a screenshot of this particular issue. The affected access point is 172.16.165.241.
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Jan 5, 2011
I have installed 4 unit Cisco Aironet 1250 acting as Autonomous AP each. I want to integrate these AP to Windows Active Directory for authentication level.
When I read configuration guide on Cisco Aironet, they must be authenticated via RADIUS server.
Is it possible that these AP directly authenticated to Active Directory via LDAP protocol?
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Aug 22, 2012
I don't really know what I am doing and have had no Cisco training I have an Aironet 1250 Access Point. I was asked to upgrade the software on the access point so I downloaded c1250-k9w8-tar.124-23c.JA5.tar and tried to upgrade it from IE9 browser window. I allowed the upgrade to run overnight. It ran for 900+ minutes before I unplugged the router. I know it said not to interrupt the upgrade, but it seemed like something was wrong.
So, I have the access point conntected to my computer with a blue cable and it is also connected to the network. I tried running Hyperterminal hoping that I could set the ip address or otherwise connect to it.
[code]....
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May 20, 2013
I have a aeronet 1250 access point and i have a windows 2003 radius server configured to authenticate users. I need to configure the access point for radius authentication .
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Jan 13, 2012
In my LAN, I have always been used an Aironet 1250 for internal use and always work fine. Now, I added a 3com AP but both AP are not correct. When I turned off the AIRONET 1250, the 3COM AP settings works fine. When both are turn on, the 3COM AP loses connectivity all the time.I have heard about the overlapping channels in 802.11b/g networks.
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Jul 29, 2010
I need to update from older Cisco 350 Aironet 802.11a/b Wireless CardBus Adapters to Cisco cb21ag Aironet 802.11a/b/g Wireless CardBus Adapters in rugged tablet pc's. I need these without the antenna cap present to utilize the tablets antenna sytem. They are pictured on the Cisco website but Cisco partners I've contacted have been unable to assist me in purchasing them.
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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 2, 2012
I connected an external 12dBi omni-directional antenna for Networks 2.4 Ghz (TL-ANT2412D) with LMR-400 cable 5M but my antenna "emits" nothing, I have no signal. With the two supplied antennas with WAP200 I signal but does not cover any desired area.
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Oct 24, 2012
We are installing 1260 Access Point (AIR-LAP1262N-E-K9) with 2 sets of external antenna:AIR-ANT2460NP-R (2.4Ghz, Patch Wall-mount, 6dBi Directional) & AIR-ANT5160NP-R (5Ghz, Patch Wall-mount, 6dBi Directional).What would be the recommended separation of the 2 antennas if they will be mounted beside each other?
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Sep 12, 2010
an external Antenna for a 881G? We're using AT&T.
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Jan 15, 2013
directional antenna for the WAP200e.
I've been googling but can't seem to find a product. I have found omni-directional but no directional antennae
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May 21, 2013
I recently checked the output of one of my AP 3502AGN which are connected to a WiSM with the current 7.0.240.0 software. There I saw the following output:
show ap config 802.11b 3502AGN-1100c-1
Legacy Tx Beamforming ..................... ENABLED
Antenna Type............................... INTERNAL_ANTENNA
[Code].....
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Aug 19, 2012
I have to replace a 1230 with an 1262 AP.
All antennas have to be in the same direction on the AP and I guess when the old 1230 is working well the 1262 will be only better . Attached u see how I plan to mount the new AP versus the old one...
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Aug 13, 2012
When we take a look at the internal antennas on the 1142 AP, we notice the 5ghz pointed all the same way, but for the 2.4ghz we can see each offset by 45/120 degrees. It was my understanding that all antennas are omnidirectionals on the 1142, why are those 2.4ghz antennas not all pointed the same way? onfiguration advantage and that each antenna is indeed omnicadirectional? Example, if I shut just one antenna off, do I lose a sector (120degree)?
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Jan 24, 2012
i want to install a 3500e. I have a hole in my wireless network where this AP will be a perfect fit. I do have a wireless controller running code 6.x, so I think I will need to upgrade to 7 which is not a big deal.
The problem I have is the antenna selection. Since the AP has MIMO multiple-inputs multiple-inputs I’m perplexed on the type of antenna to choose. Since the environment is a warehouse the Omni directional would be preferred - should I also add the dipole antenna for close proximity to the AP. Also, I noticed in the getting started guide the 3500e has 6 external connection points 3 for 2.4 and 3 for 5 GHz. The antenna documentation says to use dual-band antennas, but this contradicts what is shown in the getting started guide. So what antennas should I get to make the 3500e work in a warehouse environment.
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Feb 4, 2013
where can I find SKU for HGA9N antenna? Looking in CCW but I can't find it. Neither I can find EoS notice for it.
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Mar 22, 2013
I am still new to wireless. I have been studing for my CCNA Wireless for about 6 months now so I still have a lot of questions.
Right now I have to deploy some new APs. We are using 3502e APs. I have a qustion on how to mount antennas for these access points. I have to make a mounting bracket the new installations. What was done with the previous APs was to mount a unistrut beam to an I beam in the building. There is 2 AIR-ANT-1728's and 2 AIR-ANT-5160V-R antennas mounted straight out on the unistrut. Then they put a T bracket on the unistrut and mounted a second bar 90 degrees from the main bar and connected the third 1728 and 5160 antennas on the second mounting bracket. So we have 4 antennas in a row, and two off to the side 90 degrees from the other 4 antennas.
My question, is this OK to have them this way, or would it be better to have all 6 antennas in a straight line when I fabricate my new AP brackets?
Here is a picture of what I am talking about. This would be looking at it from above.
Current New Proposal
__________o__o__o__o_ _________o__o__o__o__o__o
| AP AP
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|o
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|o
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Sep 5, 2012
The 3502e has 3 antenna terminals for each band. Is the order of connection to the antenna pigtails significant? The antenna pigtails are not marked ABC (just blue boots for 5GHz.)
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