I have two 3750ME switches connecting two ends of a LES100. On each switch, i have 3845 routers with the NM-CEM-4SER modules, plus direct to switch internet traffic. My complete setup is as shown in the attached PDF.
My problem is that with the default QoS settings, i have lots of drops in the Txqueue of the switches.
The CEM's send traffic as EF, which is trusted throughout the switch setup. Other traffic that comes into the switch is marked down to best effort. Thus, most of the traffic the switches handle is EF,(about 70%, 20MB for now). How do i tune the QoS parameters on the switch to handle this amount and more of EF traffic?