OS10 Enterprise Edition User Guide Release


Bandwidth allocation

You can allocate relative bandwidth to limit large flows and prioritize smaller flows. Allocate the relative amount of bandwidth to nonpriority queues when priorities queues are consuming maximum link bandwidth.

Each egress queue of an interface can be scheduled as per Weighted Deficit Round Robin (WDRR) or by strict-priority (SP), which are mutually exclusive. If the bandwidth percent command is present, you cannot configure the priority command as it is used to assign bandwidth to a queue.

In S5148F-ON, bandwidth weight is equally applied to UC and MC.

  1. Create a class-map of type queuing and configure a name for the class-map in CONFIGURATION mode.
    class-map type queuing 
  2. Apply the match criteria for the QoS group in CLASS-MAP mode.
  3. Return to the CONFIGURATION mode.
  4. Create a policy-map of type queuing and configure a policy-map name in CONFIGURATION mode.
    policy-map type queuing 
  5. Configure a queuing class in POLICY-MAP mode.
  6. Assign a bandwidth percent (1 to 100) to nonpriority queues in POLICY-MAP-CLASS-MAP mode.
    bandwidth percent 

Configure bandwidth allocation

OS10(config)# class-map type queuing solar
                                 OS10(conf-cmap-queuing)# match qos-group 5
                                 OS10(conf-cmap-queuing)# exit
                                 OS10(config)# policy-map lunar
                                 OS10(config)# policy-map type queuing lunar
                                 OS10(conf-pmap-queuing)# class solar
                                 OS10(conf-pmap-c-que)# bandwidth percent 80

View class-map

OS10(conf-cmap-queuing)# do show class-map
                                 Class-map (queuing): solar (match-any)
                                 Match: qos-group 5

View policy-map

OS10(conf-pmap-c-que)# do show policy-map
                                 Service-policy (queuing) output: solar
                                 Class-map (queuing): lunar
                                 bandwidth percent 80

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