If you configure only the priority group in an ETS output policy or only the dot1p priority for strict-
priority scheduling, the flow is handled with group strict priority.
Configuring Bandwidth Allocation for DCBx CIN
After you apply an ETS output policy to an interface, if the DCBx version used in your data center network
is CIN, you may need to configure a QoS output policy to overwrite the default CIN bandwidth allocation.
This default setting divides the bandwidth allocated to each port queue equally between the dot1p
priority traffic assigned to the queue.
For more information, refer to Allocating Bandwidth to Queue.
To create a QoS output policy that allocates different amounts of bandwidth to the different traffic types/
dot1p priorities assigned to a queue and apply the output policy to the interface, follow these steps.
1. Create a QoS output policy.
CONFIGURATION mode
Dell(conf)#qos-policy-output test12
The maximum 32 alphanumeric characters.
2. Configure the percentage of bandwidth to allocate to the dot1p priority/queue traffic in the
associated L2 class map.
QoS OUTPUT POLICY mode
Dell(conf-qos-policy-out)#bandwidth-percentage 100
The default is none.
3. Repeat Step 2 to configure bandwidth percentages for other priority queues on the port.
QoS OUTPUT POLICY mode
Dell(conf-qos-policy-out)#bandwidth-percentage 100
4. Create a priority group for strict-priority scheduling.
QoS OUTPUT POLICY mode
Dell(conf-qos-policy-out)#scheduler strict
NOTE: You can not use scheduler strict when bandwidth percentage is configured. It
displays an error message.
Dell(conf-qos-policy-out)#bandwidth-percentage 100
Dell(conf-qos-policy-out)#scheduler strict
% Error: Strict priority scheduler mode is not allowed when bandwidth-
percentage is configured on qos-policy-output profile.
Dell(conf-qos-policy-out)#scheduler strict ?
5. Exit QoS Output Policy Configuration mode.
QoS OUTPUT POLICY mode
Dell(conf-if-te-0/1)#exit
6. Enter INTERFACE Configuration mode.
CONFIGURATION mode
Dell(conf-qos-policy-out)#int te 0/1
268 Data Center Bridging (DCB)