10-28-2008 09:28 AM - edited 07-03-2021 04:41 PM
Hello,
I heard from a Cisco SE that WLCs could not manage the same number of APs if these are 802.11n APs (1250) or others.
For example: a WLC4404-50 will manage 50 802.11a/b/g APs but only about 33 802.11n APs (1250).
Is that true ? I really can't find anything about this on CCO.
Thanks!
Thomas
10-28-2008 02:51 PM
Kind of yes, kind of no. A Wireless LAN Controller operates via licenses, so it can support X access points, regardless of their type. The thing to keep in mind is the bottleneck that's created by having traffic pass through the controller. 50 APs each passing 20Mbps max = 1Gbps, and a 50-AP WLC has 2Gbps in uplinks. 50 802.11n APs each passing 100+Mbps quickly clogs the pipes.
Keep in mind that 802.11n implementations rarely hit this high throughput. It's only when in pure 802.11n implementations (no 802.11a/b/g). In these cases, you should probably avoid fully loading controllers, and use WiSMs where possible.
10-29-2008 07:32 AM
The odds of you hitting this throughput ceiling in the next 2-3 years is unlikely. Most devices today are still 802.11b/g. A new generation of controllers will be released in the next year or so to enhance throughput and resources such as processor and memory power.
10-31-2008 04:20 AM
Hi,
Wireless is access network. As much as I remember max oversubscribe rate for this type of network is 20:1. Max average throughput per one 1250 is around 250Mbs. So with WLC4404-50 You have 6.1:1. I think your IT manager would be delight :-).
Cheers
Greg
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