Wireless QoS

[haitham.jneid]

Hi Experts,

I have the following design:

LWAP--->cisco 3850 switches--->cisco 6800--->WLC5508. as in the attached diagram,

I have 2 WLANs:

Corporate users SSID

Guest Users SSID.

the network has Wireless laptops, mobile phones, Cisco wireless phone 7921, ...etc.

how can I prioritize voice and video traffic at least for the corporate SSID as voice/video are the only critical application inside my  network. where to do the QoS config on WLC or on SW6800.

please support.

thanks,

[Georg Pauwen]

Hello,

before delving into complicated dcsp marking and configuration of policies, the first thing you might want to try is enable 'auto qos voice' and 'auto qos video' on your ingress interface, in your case that is the SW6800 for the WLC5508, and the 3850 for the LWAP

As an example, if your WLC5508 is connected to GigabitEthernet0/0 on the SW6800 switch, and the LAWP to FastEthernet0/0 on the 3850 switch, configure the interfaces as below:

interface GigabitEthernet0/0

 auto qos voip trust

 auto qos video (the command has several options, chose the application you are using)

interface FastEthernet0/0

 auto qos voip trust

 auto qos video (the command has several options, chose the application you are using)

These command will automatically configure QoS which in many cases is sufficient.

[haitham.jneid]

Hi,

thank you for you reply,

what about the 4 QoS classes on the WLC (Platinum, gold, silver, bronze). I read somewhere that we should configure QoS on WLC as well,

thanks,

Haitham Jneid

[Georg Pauwen]

Haitham,

the auto QoS solution I suggested is really just one of many. It is the easiest one to configure. Enabling QoS on the WLC is certainly another good option. In essence, they all do the same, which is marking voice and video traffic with a high (5 or 6) CoS.