Hey,
That command is assigning COS value 5 to Queue 1 Threshold 3. Depending on what DSCP value is mapped to COS 5 in the mld qos map cos-dscp mapping will determine what traffic is placed in that queue and threshold. I have seen COS 5 mapped to DSCP 40 by default using Auto QOS, which means that if we wanted EF or DSCP 46 mapped to COS value 5 we would need to change the cos-dscp mapping to match that. I hope I didn't confuse you even more. The QoS section of the 3750 Configuration Guide is a great help.

Amp

Quoting CCIEing <aboaz...@gmail.com>:

HI All,

I am really struggling with QOS

I can understand what this command means :

mls qos srr-queue output cos-map queue 1 threshold 3  5

How to use it ???



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