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Using QoS-groups with 802.1q/p

I was wondering if anyone had come across this problem.

I have configured qos-groups on a router. The qos-group matches on mpls exp-bit 4 on the input interface and sets CoS 4 (802.1p) frames on the output sub-interface.

The problem lays with the downstream router. The router isn't recording the frames as being ,marked with CoS 4. I am using extended pings to generate the traffic across the router. A network sniffer is also observing the the frames with CoS value 0.

Any recommendations?

The configurations are shown below:

Upstream router:

class-map match-all qos_group_4

match qos-group 4

class-map match-all mpls_voice

match mpls experimental 4

!

!

policy-map ethernet_trunk_out

class qos_group_4

set cos 4

policy-map ethernet_input

class mpls_voice

set qos-group 4

Downstream:

class-map match-all cos4

match cos 4

!

policy-map ethernet_trunk_in

class cos4

police 8000 1500 1500 conform-action set-mpls-exp-transmit 4 exceed-action

set-mpls-exp-transmit 4

1 REPLY
Bronze

Re: Using QoS-groups with 802.1q/p

I don't see the downstream router configured for Policy map on the interface. Hope you have applied the policy map on the incoming ethernet interface of the router.

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