Owners Manual

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 a DCB input policy with PFC configuration to all stacked ports in a switch stack or on a
stacked switch. You can apply different DCB input policies to different stacked switches.
To apply DCB policies in a switch stack, use the following command.
NOTE: Use only 40G ports as stacking ports when you enable DCB. S4820T does not support DCB
when you use 10GBaseT ports as stacking ports.
• Apply the specified DCB input policy on all ports of the switch stack or a single stacked switch.
CONFIGURATION mode
dcb-policy input stack-unit {all | stack-unit-id} stack-ports all dcb-input-
policy-name
Entering this command removes all DCB input policies applied to stacked ports.
A dcb-policy input stack-unit all command overwrites any previous dcb-policy input
stack-unit stack-unit-id configurations. Similarly, a dcb-policy input stack-unit stack-
unit-id
command overwrites any previous dcb-policy input stack-unit all configuration.
Entering the no dcb-policy input stack-unit all command removes all DCB input policies
applied to stacked ports and resets PFC to its default settings. The no dcb-policy input stack-
unit
stack-unit-id command removes only the DCB input policy applied to the specified switch.
Applying DCB Policies with an ETS Configuration
You can apply a DCB output policy with ETS configuration to all stacked ports in a switch stack or an
individual stacked switch. In addition, you can apply different DCB output policies to different stack units.
Data Center Bridging (DCB)
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