• The PFC dot1p priorities result in more than two lossless port queues globally
on the switch.
• You already enabled link-level flow control. PFC and link-level flow control
cannot be enabled at the same time on an interface.
In a switch stack, configure all stacked ports with the same PFC configuration.
A DCB input policy for PFC applied to an interface may become invalid if you
reconfigure the dot1p-queue mapping. This situation occurs when the new dot1p-
queue assignment exceeds the maximum number (2) of lossless queues supported
globally on the switch. In this case, all PFC configurations received from PFC-
enabled peers are removed and resynchronized with the peer devices.
Traffic may be interrupted when you reconfigure PFC no-drop priorities in an input
policy or reapply the policy to an interface.
NOTE: Please note that Dell Networking does not recommended to use this
command as it has been deprecated in the current 9.4.(0.0) release. A warning
message appears when you try to run this command indicating that you have
to use the dcb-map commands in the future.
Related
Commands
dcb-input — creates a DCB input policy.
dcb-policy input stack-unit stack-ports all
Apply the specified DCB input policy on all ports of the switch stack or a single stacked switch.
Syntax
dcb-policy input stack-unit {all | stack-unit-id} stack-ports
all dcb-input-policy-name
To remove all DCB input policies applied to the stacked ports and rest the PFC to
its default settings, use the no dcb-policy input stack-unit all command.
To remove only the DCB input policies applied to the specified switch, use the no
dcb-policy input stack-unit command.
Parameters
stack-unit-id Enter the stack unit identification.
dcb-input-
policy-name
Enter the policy name for the DCB input policy.
Defaults none
Command
Modes
CONFIGURATION
Command
History
Version 9.2(0.0) Introduced on the M I/O Aggregator. This command is
supported in Programmable-Mux (PMUX) mode only.
Data Center Bridging (DCB)
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