?
Solved

Wireless network still notworking

Posted on 2007-09-29
17
Medium Priority
?
280 Views
Last Modified: 2010-04-24
I have a 6 access point wireless network with a cisco 2000 wireless lan controller. T he network has been down for over a month. I have replaced the lan controller but the APs still don't communicate with the controller. Need suggestions on what to do to fix problem. The Cisco APs turn green then red, then green, then red etc. Sometimes I can get to the web page for the lan controller and sometimes I can't.
0
Comment
Question by:jimmylew52
  • 9
  • 8
17 Comments
 
LVL 2

Expert Comment

by:tlamonia
ID: 19986007
Not enough info.  Need a diagram and the configs for all devices, including interconnections.  If you're in a pinch and need immediate help, call Cisco for support.  Or call your local Cisco account rep, he/she usually has an engineer assigned to assist in such cases.
-Todd
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 19986663
All APs connect to a switch. The controller connects to the same switch. The APs are supposed to get their config from the controller. At least that is what I was told. The documentation with the controller does not mention needing to configure the APs. Neither does the documentation with the APS.
0
 
LVL 2

Expert Comment

by:tlamonia
ID: 19986931
What's the model# of the APs you are using?  And what's the code version of the controller?
-Todd
0
A Cyber Security RX to Protect Your Organization

Join us on December 13th for a webinar to learn how medical providers can defend against malware with a cyber security "Rx" that supports a healthy technology adoption plan for every healthcare organization.

 
LVL 2

Expert Comment

by:tlamonia
ID: 19986988
Things to check:
1) Make sure your APs are in Lightweight mode.  If not, refer to: http://www.cisco.com/en/US/partner/docs/wireless/access_point/conversion/lwapp/upgrade/guide/lwapnote.html#wp157638
2) Then make sure the LAPs are authorized, refer to this config example:
http://www.cisco.com/en/US/partner/products/hw/wireless/ps430/products_configuration_example09186a00808c7234.shtml
3) This document explains how to control LAPs via a controller:
http://www.cisco.com/en/US/partner/docs/wireless/controller/4.0/configuration/guide/c40lwap.html#wp1104685
Please provide the model# of the APs and your controller code version for more specific help.
-Todd
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 19987012
The links require a cco login which I do not have. I will get the requested information when I get to work today.
0
 
LVL 2

Expert Comment

by:tlamonia
ID: 19987053
I suggest that you sign up for a CCO login.  It's free.
-Todd
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 19988832
It turns out that the authentication server has had problems for days. I was able to get some help from Cisco today. My biggest problem now is that the web interface keeps going away. If I reprogram the lan manager I can get to the web interface, but after about 15 min it goes away. I was trying to upgrade the OS and it kept timing out. I lose the web page because I cannot contact the lan manager. After about 15 min I cannot ping it any more.  I have not been able to find out what is happening. The next chance I get I will try again to download a new ios and see if that helps.
0
 
LVL 2

Expert Comment

by:tlamonia
ID: 19990190
You're on the right track.  Other things you may want to check:
1) Replace the Ethernet cables, check for loose connectors
2) Duplex and speed settings on the switch and controller.  Hard code these to 100 Full
3) The length of the run from the controller to the switch.  Should be less than 300 ft.
4) IOS on your switch- check it for bugs
5) Power source for your controller, should be connected to a UPS for reliable power, check grounding or other electrical issues
6) Turn on debug/logging on your controller, that may give you a clue as to what's going on
7) Check for duplicate IP addresses on the network
-Todd
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 19997623
Cables good, speed and duplex auto, cable length 5 ft. no Duplication of address, have UPS, debugging quiet. The IP address does not go away Like I thought. If I reset the IP adress after boot up thru CLI then I have access to the WEB Interface. I sent the configuration to a Cisco engineer for them to look at it. I have no heard back yet.
0
 
LVL 2

Expert Comment

by:tlamonia
ID: 19997905
Hard code the speed and duplex to 100 full on your controller and on the switch port its connected to.
-Todd
0
 
LVL 2

Accepted Solution

by:
tlamonia earned 2000 total points
ID: 20002369
Any luck?
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 20008591
Have not had an opportuniity to try yet. Big wigs in town with priority items (personal) to be handeled first.
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 20035567
Contrary to info in documentation and Cisco TAC the VLAN on the controller interfaces had to be set to VLAN1 not 0 or the switchport vlan. I now have communication between the controller and the APs. I still do not have the wireless network available to users. I am working on the problem. Any suggestions?
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 20053170
Wireless network up and running. Thanks for al  the input.
0
 
LVL 2

Expert Comment

by:tlamonia
ID: 20053468
How did you get it to work?
0
 
LVL 1

Author Comment

by:jimmylew52
ID: 20070696
The "management" and "ap-manager" port both had to be assigned to vlan 1. Cisco TAC told me they had to be assigned to the native vlan for the attached port (220 in my case). The documentation I downloaded from the cisco web site said to assign them to vlan 0. Once I configured both to vlan 1 everything started communicating and I have access to the web configuration. I thought I still had a problem after configuring both interfaces to vlan 1 but it turned out to be a problem with my wireless NIC and not the system.
0
 
LVL 2

Expert Comment

by:tlamonia
ID: 20070885
Good deal, thanks and I'm glad it's working!
-Todd
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is a step by step guide on how to create a basic PTP link using Ubiquiti airOS devices. This guide can be used on the following Ubiquiti AirMAX devices. Nanostation, Bullets, AirBridge, Nanobeam, NanoBridge to name a few. Please review …
In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…
When cloud platforms entered the scene, users and companies jumped on board to take advantage of the many benefits, like the ability to work and connect with company information from various locations. What many didn't foresee was the increased risk…
Suggested Courses
Course of the Month15 days, 21 hours left to enroll

850 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question