Interference and Design - Small Office

[bruce_gettel]

Hello Folks,

I'll keep this as succinct as possible:

• Small commercial office - 4K sq. feet
• Client has 1 (consumer grade) b/g/n AP (Cisco / Linksys)
• Both bands in operation, auto-channel-select enabled on 2.4, channel 153 at 80MHz on 5GHz
• Client complaining of poor WiFi Performance
• AirMagnet shows very congested airspace - 19 SSIDs / 25 WAPs in the surrounding offices / buildings
• Every "alien" AP is operating on 1, 6, or 11 on 2.4
• Two APs are operating close enough to channel 153 to concern me

I need to solve the client's problem.  Certainly getting the consumer-grade WAP out of there is the first step.  I'd like to put in a pair of Unleashed R600 access points.

What are your high-level config recommendations to help deal with the congestion / neighboring WLANs?  Would a couple of APs placed in the right locations, along with ChannelFly do the trick?

Credibility concern:  Removing the existing AP with auto-channel capabilities and replacing it with different (albeit commercial grade) APs with the same type of feature.  I need to be careful how I explain this, and confident that ChannelFly (if used) will work better than what's already there.

Thanks in advance.

BG