mls qos command

LucaSalvatore_2 · ‎04-15-2010

Hi,

If switches do not have the mls qos command what happens to incoming packets that have a DSCP or CoS value configured? Do they get reset?

Also, if a switch does have mls qos command, but an interface is not set to trust DSCP or CoS, will any marking get reset?

thanks

Jon Marshall · ‎04-15-2010

Luca

Because QOS is quite different between Catalyst platforms the best thing to do is look at the default configuration for each switch to answer your question eg.

3560 -

3560 default configuration

6500 -

6500 default configuration

For others you can get to the configuration docs from the cisco homepage -> Products & Services -> Switches -> switch you are interested in and then select the configuration docs.

Jon

LucaSalvatore_2 · ‎04-15-2010

Thanks i'll have a read.... This questions is relevent to 3560 switches.

mohamed zafar · ‎04-16-2010

to enable qos on a switch u must enter mls qos

if the it is cos trust it will remark it will take the trusted value