Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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.

Weighted Deficit Round Robin (WDRR) is a scheduling method that uses a deficit counter to allocate bandwidth for traffic flows.

Schedule each egress queue of an interface 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.

1. Create a queuing type class-map and configure a name for the class-map in CONFIGURATION mode.

   class-map type queuing example-que-cmap-name

2. Apply the match criteria for the queue in CLASS-MAP mode.

   match queue queue-number

3. Return to CONFIGURATION mode.

   exit

4. Create a queuing type policy-map and configure a policy-map name in CONFIGURATION mode.

   policy-map type queuing example-que-pmap-name

5. Configure a queuing class in POLICY-MAP mode.

   class example-que-cmap-name

6. Assign a bandwidth percent, from 1 to 100 to nonpriority queues in POLICY-MAP-CLASS-MAP mode.

   bandwidth percent value

Configure bandwidth allocation

OS10(config)# class-map type queuing example-que-cmap-name
OS10(config-cmap-queuing)# match queue 5
OS10(config-cmap-queuing)# exit
OS10(config)# policy-map type queuing example-que-pmap-name
OS10(config-pmap-queuing)# class example-que-cmap-name
OS10(config-pmap-c-que)# bandwidth percent 80

View class-map

OS10(conf-cmap-queuing)# do show class-map
  Class-map (queuing): example-que-cmap-name
   Match: queue 5

View policy-map

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