How to: Give 1 SSID higher priority than other SSIDs

[Khoa Pham]

I sometime have up to 90 people connected to an AP.I have 3 SSIDs on my APs. 1 of them is the Corporate one and I need people who on that SSID have special treatment and make their network run faster , in the event of congestion. I dont really care about the service quality of the other SSIDs. 

Note: The congestion is only at the AP since 90 people is a little too much for an AP. Once they get through Wireless to Wire, I dont have problem with Wire connection so no End-to-End QOS I prefer.

How do I archive this ?

I am on WLC v8.0

[Rasika Nayanajith]

You can configure that SSID with platinum QoS profile & other two SSID with Silver or Bronze QoS profile.

This is a basic way of giving some priority for the important traffic of your corporate SSID. To achieve this you have to implement end to end QoS on your wired network as well.

HTH

Rasika

**** Pls rate all useful responses ****

[George Stefanick]

Its my 2 cents. Even with QoS applied the medium contention with 90 (if all on the same radio) or even 45 / 45 (if 2.4 and 5 GHz) will be very high. QoS users will have a hard time getting access to the medium because of the amount of clients. 

The real fix to this issue, add another access points. 

[Khoa Pham]

Out of 90 devices, only 5 to 10 are the corporate ones. That's why I need to find a way to make the APs give special treatment to 1 particular SSID. For other devices in other SSIDs , I can live with "Best effort" 

[George Stefanick · Accepted solution]

I undestand. But think about it for a moment. 80 non QoS devices all contending for the network at various parts in time and 10 QoS devices doing the same.

Even when a QoS device wants to trigger a frame he needs to listen to the medium. He may hear some mix of 80 other devices using the medium. The QoS device does his backoff and starts to count down. While counting down he is listening to the medium and hearing other (part of the 80 clients) transmitting frames. The QoS device then needs to pause, wait and then resume countdown when these frames are heard. When he hits 0 with his NAV, with 80 other clients on that cell the odds of him being the only one transmitting at that point of time isn't as good if there were only 20 clients on cell. 

So my point being while you QoS you may not see the performance you want with that many people on cell.