Solved

Wireless network issue

Posted on 2012-04-10
6
238 Views
Last Modified: 2012-05-08
Hi,

We have cisco wifi controller 1800 series and 9 cisco Access point.

Last month we have moved our office  to new building And we only had changed the IP address of controller. Old ip was 172.16.10.251 and new ip is 10.20.0.251

Now we are facing issue in wireless from one month. Our wireless is not stable. most of the time latency goes high. users are not able to access internet. Latency to our any local IP goes upto 3000 ms.

Can anyone provide me the solution?
0
Comment
Question by:sitg
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
6 Comments
 
LVL 46

Expert Comment

by:Craig Beck
ID: 37832581
So you have moved office?  Have you had a post-installation WIFI site-survey?  I'd guess you're suffering from interference which could be due to actual outside interference (from external sources) or because your APs are too close to eachother and therefore causing a problem.

If you log in to the controller and hit the Wireless tab, then click on 802.11a/n or 802.11b/g/n in the Access Points menu you should be able to see which power levels your APs are working at.  Take a screenshot of each and post it here so I can see what's what.
0
 

Author Comment

by:sitg
ID: 37875287
Hi,

Please find the attached screen shot.
Untitled.jpg
0
 
LVL 24

Expert Comment

by:smckeown777
ID: 37875341
Ok so there are

4 AP's on CH11
3 on CH1
1 on CH6

How are your AP's spaced? This obviously worked for you before but is it possible you have 2 AP's on same channel close to each other? If so you will be suffering interference...

I see only 8 AP's in total - you mentioned in first post you had 9 - has one been taken out?

With 9 AP's and depending on spacing between them you might be better to spread the Channel assignment out more evenly - 3 on CH1, 3 on CH6 and 3 on CH11...

If possible could you draw up a basic network map of the relevant location of each AP and its corresponding channel number for review?
0
Manage your data center from practically anywhere

The KN8164V features HD resolution of 1920 x 1200, FIPS 140-2 with level 1 security standards and virtual media transmissions at twice the speed. Built for reliability, the KN series provides local console and remote over IP access, ensuring 24/7 availability to all servers.

 

Author Comment

by:sitg
ID: 37875557
Can i change the channel manually is AP's?




Currently I had removed one AP thats why it show 8.
0
 
LVL 24

Accepted Solution

by:
smckeown777 earned 500 total points
ID: 37875569
Yes you can change the channel, once logged into the AP this should be an option.
I'm not familar wtih the controller you are using, it should be an option from there to change the channel too I think...

But if the AP's are not in the same physical layout as when they were in the previous building(which I can't see them being to be honest) then you probably have 2 or more overlapping on the same channel
0
 
LVL 46

Expert Comment

by:Craig Beck
ID: 37876477
I find it a little strange that all the APs are on power level 5.

Just as an experiment, could you try turning off two of the APs on channel 11 and one of the APs on channel 1, all at the same time?
0

Featured Post

Create the perfect environment for any meeting

You might have a modern environment with all sorts of high-tech equipment, but what makes it worthwhile is how you seamlessly bring together the presentation with audio, video and lighting. The ATEN Control System provides integrated control and system automation.

Question has a verified solution.

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

In this article I will describe how to setup a Cisco WLC 5508 to work with Apple's Bonjour protocol across VLANs.  I will also discuss using screen mirroring and Airplay on an AppleTV v3.  This article covers the wireless network only and requires m…
Multi-source agreements are important because they set standards that all manufacturers should follow to ensure that devices are compatible with multiple vendors. The multi-source agreement (MSA) is an agreement that establishes how multiple vendors…
This Micro Tutorial will show you how to maximize your wireless card to its maximum capability. This will be demonstrated using Intel(R) Centrino(R) Wireless-N 2230 wireless card on Windows 8 operating system.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…

749 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