controller 2504 Load balancing problems

[lung.cheung]

Dear Support,

I have setup a closed wireless network as per "nd1.jpg", and connected to 8 notebooks. But I have faced some problem about load balancing, hope that you can help to solve the issue.

1. I found that the Load Balancing is not working, all the client will affiliated to 1 AP only, and 1 AP with no client, and this situation appears frequently. Therefore, all the loading is on 1 AP only, i hope that the 2 APs can share the loading with about 4 client affiliated to 1 AP. Any setting can help to improve the situation?

Remarks: All the client is located evenly, and not close to 1 AP

The Load Balancing setting has been enclosed for your reference.

Client Window Size: 5

Maximum Denial Count: 3

2. Sometimes, when 7 clients affiliated to AP"1", remaining 1 client affiliated to the AP"2". We found that there will be abnormal connection after running for about 2-3 hours. And the abnormal connection appear on the AP"2" which connected to 1 client only, but not the AP"1". And both AP will have same problem when only 1 client affiliated to it.

For the abnormal connection, we found that the client is connected to the AP, but no data is transmitted and received. We have tried to restart all the clients, but it doesn't help, until we restart all the network equipment.

The model and firmware version are as below.

Cisco 8 Port POE switch	WS-C35860CX-8PC-S	ROM: c3560cx-universalk9-mz.152-4.E1.bin Version: 15.2(4)E1 Boot: 15.2(3r)E2 IP: 192.168.0.250
Cisco 2702i Access Point	AIR-AP2702I-UXK9	IP: 192.168.0.253
Cisco 2702i Access Point	AIR-AP2702I-UXK9	IP: 192.168.0.254
Cisco Wireless controller	AIR-CT2504-K9 V03	Version: 8.2.100.0 Recovery Image: 7.6.101.1 License: 25 wireless client IP:192.168.0.252

[Rasika Nayanajith]

It's client who decides which AP they need to connect. AP has very little control over it. What power level these AP operate?

I would reduce power level & see if client distribute among those two APs (if you turn off one AP does all clients move to the other AP ? )

HTH

Rasika

*** Pls rate all useful responses ***

[lung.cheung]

Hi Rasika,

we use the automatic mode of power level assignment method, because it is the mobility solution for video broadcast.

I try to remove one AP(unplug POE cable) fail-over is work properly, all clients will connect to one AP. After fail-back, all client will associate with the previous AP, and will not balance the no. of client.

Is there any setting in the controller that can help for the situation?

Thanks 

K.L. Cheung

[Rasika Nayanajith]

Hi 

Post the output of below two CLI commands. 

show advanced 802.11a summary 
show advanced 802.11b summary 

In which frequency band (2.4GHz/5GHz) clients are associating to?

HTH

Rasika