Dell C9000 series, Reference Manual

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• 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.
If the priority group to QoS policy mapping configurations in the DCB output profile are
not complete (for example, no priorities are mapped or only some of the priorities are
mapped), all eight priorities map to a single priority group with a PGID of 0 for DCBx
negotiations.
Related
Commands dcb-map — to configure PFC and ETS on Ethernet ports that support converged
Ethernet traffic.
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.
C9000 Series
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 This guide is platform-specific. For command information about other platforms, refer
to the relevant Dell Networking OS Command Line Reference Guide .
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