Configuring Bandwidth Allocation For Dcbx Cin; Applying Dcb Policies In A Switch Stack - Dell S4820T Configuration Manual

CIN supports only the dot1p priority-queue assignment in a priority group. To configure a dot1p
priority flow in a priority group to operate with link strict priority, you configure: The dot1p priority for
strict-priority scheduling (strict-priority command). The priority group for strict-priority
scheduling (scheduler strict command.

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.
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
qos-policy-output output-policy-name
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
bandwidth-percentage percentage
The default is none.
3. Repeat Step 2 to configure bandwidth percentages for other priority queues on the port.
QoS OUTPUT POLICY mode
bandwidth-percentage percentage
4. Exit QoS Output Policy Configuration mode.
QoS OUTPUT POLICY mode
exit
5. Enter INTERFACE Configuration mode.
CONFIGURATION mode
interface type slot/port
6. Apply the QoS output policy with the bandwidth percentage for specified priority queues to an
egress interface.
INTERFACE mode
service-policy output output-policy-name

Applying DCB Policies in a Switch Stack

You can apply DCB policies with PFC and ETS configurations to all stacked ports in a switch stack or on a
stacked switch.
To apply DCB policies in a switch stack, follow this step.
Data Center Bridging (DCB)
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