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qos dscp marking to wan

network770
Beginner
Beginner

I have a requirement to tag all voice traffic to the wan as DSCP field in the IP header set to ef (decimal 46).

i am currently running auto qos on the switches which are also facing the wan.

how do mark my voice traffic as such?

Do I need this on all interfaces:

auto qos voip trust

mls qos trust dscp (or cos)

or only on the phone server interfaces?

what about the interface facing the wan?

3 REPLIES 3

ajay chauhan
Rising star
Rising star

I have found the following, does that make sense:

access-list 10 permit ip 192.168.100.0 255.255.255.0

access-list 10 permit ip 192.168.110.0 255.255.255.0

class-map match-all permium

  match access-group 10

  match ip dscp 46

now i can 'capture' the traffic and categories it as dscp46 but how do i apply it?

note that the vlans above are all my phones

Hi,

packets with a src IP of 192.168.100.x or 192.168.110.x and a DSCP value of 46 will be matched in this class-map.

Now to make an action to these packets you must use a policy-map:

policy-map premium

class premium

    if you want to mark traffic as action then replace by set dscp ef

Then apply the policy to interface with service-policy command:

int fx/x

service-policy premium out

Regards.

Alain.

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