AP load balancing question

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I see this here in school as well.

Typical scenario 8 classrooms (4 up 4 down) with 2 APs and I'll see 40 laptops in those rooms connect to 1 AP and only a few (5 perhaps) connect to the other AP. Would have expected a little more balancing between the two.

The 7363s seem to handle the numbers fine so it's more a curiosity than problem. I've learnt to ignore it and just be pleased it all works well!

To be clear the laptops are not missing the two nearest APs and picking up a remote one, just a big imbalance in which AP serves majority of clients. So not quite the same as Marty...should have read more closely.

Will post a similar screenie if I get chance early next week.

Note: This topic was created from a reply on the clients not connecting to nearest AP topic.
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Max O'Driscoll, AlphaDog

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Posted 4 years ago

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Keith - Pack Leader

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Client load-balancing is off by default. See p166 here: https://support.ruckuswireless.com/do... to enable
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Max O'Driscoll, AlphaDog

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Thanks for pointer. Have load balancing enabled (and background scanning - as required). Now rereading how it's implemented think I can see why my scenario behaviour occurs.

The balancing is per WLAN not per AP. My groups of laptops are each on own WLAN. So RED, GREEN, BLUE (15 laptops in each, there are many other colour WLAN groups) might nearly all associate with one AP because per WLAN they have not breached the balance threshold. So might have an AP with circa 45 clients (3x15 on each WLAN) and nearby AP servicing few or none of them because the WLAN limit is not reached.

All the WLANs have a balance limit at 15 so that one group of laptops would always be able to associate through one AP because there are areas of school where the next nearest AP would be too remote ie an edge scenario. Naturally this means no balancing, ever! Not quite how I envisoned it to work.

Ideally what I need is an option to tell the AP to balance with a neighbouring AP based on total clients not WLAN membership criteria.

Before you ask: lots of WLANs
1. to seperate out laptops for control (ie switching off access)
2. ACLs (one ACL per WLAN) are limited to 128 members total. I have way more than that.

Hope I made that confusing enough.
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Max O'Driscoll, AlphaDog

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Semi answering own option request:
looking further I see I can set a max connected clients per AP in the system default group (configure\access points\Access Point Groups\system default\edit...).
All APs belong to this group.

So would I be right in thinking (dangerous) that if I set the max at 30 then have 45 laptops (3x15 WLAN colours as above) near an AP the load balancing will kick in intelligently and some will be migrated to another AP?
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Max O'Driscoll, AlphaDog

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As a visual follow up.
2 physically close APs
Room01 39 clients
Room03 1 client



and ROOM01 nearest neighbours from monitor tab



note ROOM05 and ROOM16 are physically close and they have shared clients so are behaving (today)!
But ROOM16 nearest neighbours gives a zero for ROOM05...now I'm getting lost.



Head banging begins.
Tee, hee.
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Keith - Pack Leader

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This all gets a lot smarter (and more configurable) in 9.8.
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Max O'Driscoll, AlphaDog

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That would be wonderful. If just to make more sense when I look at monitoring like this.
I will repeat that my clients connect and seem "happy" but from up here in the Eagles nest I can see the odd disparity in AP loading.
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Max O'Driscoll, AlphaDog

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Here's how I'd expect (prefer) APs to balance. Room05 and Room06 are physically close to each other.

Room05 17 clients
Room16 22 clients



and the neighbours info from Room16



Query:
Since both APs are on channel 6 why do they report 0% for the other AP (and not 65% or more for instance)? They are circa 20m apart through a concrete floor and 1 or 2 walls depending on path. Just mildly curious.
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Max O'Driscoll, AlphaDog

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Here's a shot of the laptops on those APs. A few less than 17/23 split as I took it later. But it does show a mix of laptops (Samsung - 2 models, Lenovo and Toshiba) spread over APs Room05 and Room16.
The Toshibas (newest) are using 5GHz and all laptops report strong signal. Looks good to me - wish all the other APs did the same.