07-19-13 Expert Day

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Occasional Contributor I

Number of APs per Uplink

I have two Aruba 3200XM controllers (masters) and two Aruba 6000 Mobility Controllers with a single M3 module in each unit (local).

Everyone is running 6.1.3.4 software, and the master and local controllers each have a single 1G uplink to the network.

 

We have 430 APs between the two local controllers. From highest quantity to lowest, I have AP125, AP105, AP135, and AP93s.

 

Is there a rule of thumb, (Ratio of APs to Uplinks), that I need to be aware of when considering when to add additional 1G or 10G uplinks to the masters and/or local controllers?

 

Also, how would this ratio be impacted when moving 10-20% of existing APs to 802.11ac?

 

Thanks.

Aruba Employee

Re: Number of APs per Uplink

The general rule of thumb for current APs is 1 gig link per 100 APs.

 

I would feel comfortable putting 50 802.11AC APs per 1 gig link, but maybe someone else can chime in on that one.

 

GG

ACE Engineer
ACMX, ACDX, CISSP, B. Eng.
Aruba Employee

Re: Number of APs per Uplink

The answer to that question is multi-part for 802.11ac

 

1 - Forwarding mode for AP-22x

 

2 - Percentage of real 802.11ac clients

 

3 - Type of traffic clients are offering

 

4 - Do you have bandwidth contracts?

 

For example a Samsung Galaxy S4 in a quiet RF environment of 250 Mb/Sec TCP downstream,   In a normal environment speedtest.net results have been on the order of 150-200 mb

 

 

 

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