Wireless Access

Reply
Occasional Contributor II
Posts: 66
Registered: ‎08-09-2012

Client-Match Configurations - What Are Best Practices to Address Sticky Clients

I have a question regarding the Client-Match configurations. I found the following document on Aruba Network referencing Client-Match Configurations related to Sticky Clients. 

 

https://arubanetworkskb.secure.force.com/pkb/articles/HowTo/Client-Match-configuration-related-to-Sticky-Clients-AOS-6-3-and-above 

 

The documentation does reference settings to deal with sticky clients. 

 

  • Client Match - default is Enabled, and needs to be enabled for sticky client algorithms to work.
  • Client Match Sticky Client Check Interval (sec) - How often SNR is checked to see if client is sticky. Default is 3.
  • Client Match Sticky client check SNR (dB) - If client's SNR drops below 25, then controller will search for a better candidate AP. Default is 25.
  • Client Match SNR threshold(dB) - Minimum SNR improvement between current AP and desired target AP for the move. Default is 10.
  • Client Match Sticky Min Signal - Minimum signal level required for target AP. Default is 70.

 

The document outlines 5 points that address sticky clients. Are there other best practices/recommendations for Client-Match that also address the Sticky Client issue? I want to determine if my controller has the most optimized settings for Client-Match or if there are areas that I can tweek to get better performance. 


Client Match Enabled
Client Match report interval (sec) 30
Allows Client Match to automatically clear unsteerable clients after ageout Enabled
Client Match Unsteerable Client Ageout Interval 2 Days 0 Hours
Client Match Band Steer G Band Max Signal (-dBm) 45
Client Match Band Steer A Band Min Signal (-dBm) 75
Client Match Sticky Client Check Interval (sec) 3
Client Match Sticky client check SNR (dB) 18
Client Match SNR threshold(dB) 10
Client Match Sticky Min Signal 65
Client Match Restriction timeout (sec) 10
Client Match Load Balancing threshold (%) 20
Client Match VBR Stale Entry Age (sec) 120
Client Match Max steer failures 2
Client Match Load Balancing client threshold 30
Client Match Load Balancing SNR threshold (dB) 30
Client Match Load Balancing signal delta bound (dB) 5

 

Anthony
Guru Elite
Posts: 20,811
Registered: ‎03-29-2007

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

You should not have to touch any of the settings.  It will take care of sticky clients automatically.  Just make sure your AP power is either 12 min, 18 max or 9 min 15 max.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor II
Posts: 66
Registered: ‎08-09-2012

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

Hi Colin,

 

Thanks for the response and info about the AP power. I'll definitely look into adjusting power on the APs. Hopefully, that will improve the roaming and reduce the number of sticky clients.

 

One other question/concern relates to the Client Match Sticky client check SNR(db) value of 25 recommendation. Currently, my controller default is set to 18. Since the recommended value is 25, should I move forward with changing the value from 18 to 25?

 

  • Client Match - default is Enabled, and needs to be enabled for sticky client algorithms to work.
  • Client Match Sticky Client Check Interval (sec) - How often SNR is checked to see if client is sticky. Default is 3.
  • Client Match Sticky client check SNR (dB) - If client's SNR drops below 25, then controller will search for a better candidate AP. Default is 25.
  • Client Match SNR threshold(dB) - Minimum SNR improvement between current AP and desired target AP for the move. Default is 10.
  • Client Match Sticky Min Signal - Minimum signal level required for target AP. Default is 70.

 

Anthony
Occasional Contributor II
Posts: 66
Registered: ‎08-09-2012

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

I checked the values for both Max Tx EIRP and Min Tx EIRP. I noticed the values are diffferent with OS version.

 

On the controller running OS 6.4.1.0, the values are Max-127, Min 9.

On the controller running OS 6.2.1.4, the values are Max-15, Min-12.

Anthony
Occasional Contributor I
Posts: 5
Registered: ‎02-10-2014

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

Hi cjoseph,

 

You mentioned 

 

"Just make sure your AP power is either 12 min, 18 max or 9 min 15 max."

 

On an aruba Instant configuration with AP225s, there is only one setting per AP, not per radio. Which setting is the most appropriate? I have an AP225 in every classroom at secondary schools, and one every other classroom at elementary schools.

 

Thanks!

Guru Elite
Posts: 20,811
Registered: ‎03-29-2007

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

What version of Instant are you running at that site?  ClientMatch on instant is different than the controller-based version.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor I
Posts: 5
Registered: ‎02-10-2014

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

Thanks for the reply. We are running Instant v 6.4.2.0-4.1.1.1_46936

Guru Elite
Posts: 20,811
Registered: ‎03-29-2007

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

I would disable ClientMatch on that specific version of code on IAP.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor I
Posts: 5
Registered: ‎02-10-2014

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients


cjoseph wrote:

I would disable ClientMatch on that specific version of code on IAP.


Thanks for the suggestion. Do you know if this is addressed in a newer version?

Guru Elite
Posts: 20,811
Registered: ‎03-29-2007

Re: Client-Match Configurations - What Are Best Practices to Address Sticky Clients

I do not think so.  Let me check.

 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Search Airheads
Showing results for 
Search instead for 
Did you mean: