Traffic Marking on a Router


It’s possible to mark some traffic from an ip subnet and/or vlan at the router.

First we’re going to create an access list :
access-list 101 permit ip 192.168.0.0 0.0.255.255 any

Now we’re creating a class :
class-map match-all Voice
match access-group 101

Followed by the Policy Map :
policy-map Marking-For-Voice
class Voice
set ip dscp ef

And finally apply this policy map to an interface :
interface FastEthernet3/0.1
description Connected to Voice Clients
encapsulation dot1Q 10
ip address 192.168.0.1 255.255.0.0
service-policy output Marking-For-Voice

About Joost van der Made

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