Symptom

CPP configuration such as policy rate change for class system-cpp-police-system-critical is not allowed. When trying to disable the CPP class, and re-enabling it, we can set different policy rate for it. Changes for other classes are allowed.

Conditions

Switch(config)#show platform hardware fed switch active qos queue stats internal cpu policer CPU Queue Statistics ============================================================================================ (default) (set) Queue Queue QId PlcIdx Queue Name Enabled Rate Rate Drop(Bytes) Drop(Frames) -------------------------------------------------------------------------------------------- 25 3 System Critical Yes 1000 1000 0 0 <<<<<<< Yes Switch(config)#policy-map system-cpp-policy Switch(config-pmap)#class system-cpp-police-system-critical Switch(config-pmap-c)#police rate 500 pps System critical class (system-cpp-police-system-critical) cannot be modified Switch(config-pmap-c)#no police rate 1000 pps Removal of police rate from system class (system-cpp-police-system-critical) is not recommended Switch(config-pmap-c)#$ve qos queue stats internal cpu policer CPU Queue Statistics ============================================================================================ (default) (set) Queue Queue QId PlcIdx Queue Name Enabled Rate Rate Drop(Bytes) Drop(Frames) -------------------------------------------------------------------------------------------- 25 3 System Critical No 1000 1000 0 0 <<<<<<< No 26 10 NFL SAMPLED DATA Yes 250 250 0 0 27 2 Low Latency Yes 5500 5500 0 0 28 10 EGR Exception Yes 250 250 0 0 29 5 Stackwise Virtual OOB Yes 8000 8000 0 0 30 9 MCAST Data Yes 500 500 0 0 Switch(config-pmap-c)#police rate 500 pps Switch(config-pmap-c-police)#$ue stats internal cpu policer CPU Queue Statistics ============================================================================================ (default) (set) Queue Queue QId PlcIdx Queue Name Enabled Rate Rate Drop(Bytes) Drop(Frames) -------------------------------------------------------------------------------------------- 25 3 System Critical Yes 1000 500 0 0 <<<<<<< Yes & Changed Switch(config-pmap-c-police)#

Workaround

Further Problem Description