Solved: When to use COS instead of DSCP?

mitchell helton · ‎10-10-2012

Hey folks... i've searched google and the Cisco forums for an hour or better and haven't found exactly what I'm looking for. I'm hoping you guys can help.

Is there a good reason to use COS instead of DSCP? If all of my devices support DSCP, why would I want to use COS?

And if I am using DSCP only, is there any reason to have a DSCP to COS (or vice versa) map?

Thanks guys... I appreciate it.

Peter Paluch · ‎10-10-2012

Hello Mitch,

This is a very good question.

The DSCP is superior to CoS in most ways - it is retained end-to-end, has a finer granularity, can be easily used both by end hosts and intermediary devices, and is an integral part of

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