Hierarchical QoS policy question

unclerico · ‎12-02-2009

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.

Giuseppe Larosa · ‎12-07-2009

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