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I've followed the commands in this post: DSCP trust boundary

policy-map MARKDOWN
  class class-default
    set dscp ef

Interface Config:

interface gig 0/1
  service-policy input MARKDOWN

The commands went in fine on the Cisco switch I'm using, but it doesn't re-mark the DSCP field.

Switch I'm using is Cisco C2960 Ver 12.2(25r)SEE1.

  1. is this just a possible bug
  2. does this command work OK with other switches?
user10021657
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1 Answers1

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so I managed to figure it out....

Turn on QoS using switch(config)#mls qos command

the original example now changes DSCP values from 0 to 46 ....

Mind you, this is for everything, but I can refine it with an ACL.

edit: I also realise that this is one interface, with mls qos it will default other interfaces to 0.... I've fixed this with another policy map which is the same as in the original example, except with a different name and trust DSCP instead of set

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