Wireless Access

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Frequent Contributor II
Posts: 141
Registered: ‎08-08-2007

troubleshooting poor performance

At a site (one of 50), they have been complaining of poor speed through put. They have AP105s, local bridge SSID (no BC/MC boxes ticked!) and a "global" SSID which is tunneled, they only use the bridge. (latest 6.3 code)

 

We use band steering, client match and Spec LB. Should all be fairly standard.

 

I believe I should pick a client which is running slowly and debug it, right? What else should I be looking at?  None of the APs show up in the monitoring tab as having a problem. It might be their local LAN or client side issues i.e. drivers. But, I'd like to get stuck into some CLI as soon as I get there. I don't think they have 11a cards in their dells which is a shame. Is there anything I can run against the APs to see if they are having a hard time with interferance or co-channel? Should I create another AP profile that will enable ALL channels and see if that helps? Its in a fairly normal residential area, its a small-ish school in a large house.

 

Thanks.

Frequent Contributor II
Posts: 141
Registered: ‎08-08-2007

Re: troubleshooting poor performance

Anyone?

Guru Elite
Posts: 20,970
Registered: ‎03-29-2007

Re: troubleshooting poor performance


m0bov wrote:

At a site (one of 50), they have been complaining of poor speed through put. They have AP105s, local bridge SSID (no BC/MC boxes ticked!) and a "global" SSID which is tunneled, they only use the bridge. (latest 6.3 code)

 

We use band steering, client match and Spec LB. Should all be fairly standard.

 

I believe I should pick a client which is running slowly and debug it, right? What else should I be looking at?  None of the APs show up in the monitoring tab as having a problem. It might be their local LAN or client side issues i.e. drivers. But, I'd like to get stuck into some CLI as soon as I get there. I don't think they have 11a cards in their dells which is a shame. Is there anything I can run against the APs to see if they are having a hard time with interferance or co-channel? Should I create another AP profile that will enable ALL channels and see if that helps? Its in a fairly normal residential area, its a small-ish school in a large house.

 

Thanks.


You should start by looking at the dashboard and look at Channel Quality, Noise Floor, Channel Busy and Interference for those access points...



Colin Joseph
Aruba Customer Engineering

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Contributor II
Posts: 47
Registered: ‎10-11-2013

Re: troubleshooting poor performance

First eliminate your wired network and wan links as a source.

Once that is solid, Start at layer one and work you way up.

In this case layer one is the air. 

 

Look for interference via the AP's monitoring capabilities. There are also some good handhelds for this like Fluke's AirCheck.

 

Could you have an AP in the wrong group? That caused me some headaches recently. 

 

Finally look at your design. Are you subnets sized according to best practices? Do you have separate wireless VLAN's for each site?

 

 

 

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