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Hierarchical QoS policy question

Using the following code snippet:

class-map match-any COS2

  match access-group 181

policy-map COS2_CLASSIFICATION

  class COS2_TRAFFIC

    police cir 552000 bc 69000 be 69000

      conform-action set-dscp-transmit af31

      exceed-action set-dscp-transmit af32

policy-map CE_EGRESS_QUEUING

  class COS2

    bandwidth remaining percent 40

    service-policy COS2_CLASSIFICATION

why would you police in the child policy and also use bandwidth remaining percent in the parent policy?? just curious. thanks.

1 REPLY
Hall of Fame Super Silver

Re: Hierarchical QoS policy question

Hello,

the child policy doesn't discard exceeding packets but it remarks it with a dscp value af32 that may receive worse treatment in WRED on other nodes in the core of the network.

the bandwidth command is used to provide resources on this specific link.

Hope to help

Giuseppe

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