Reference Guide

Data Center Bridging | 95
Command Modes
CONFIGURATION
Command
History
Usage
Information
This command is supported in Programmable-Mux (PMUX) mode only.
As soon as you apply a DCB policy with PFC enabled on an interface, DCBx starts exchanging
information with PFC-enabled peers. The IEEE802.1Qbb, converged enhanced ethernet (CEE), and
CIN versions of PFC TLV are supported. DCBx also validates PFC configurations received in TLVs
from peer devices.
By applying a DCB input policy with PFC enabled, you enable PFC operation on ingress port traffic.
To achieve complete lossless handling of traffic, also enable PFC on all DCB egress ports or configure
the dot1p priority-queue assignment of PFC priorities to lossless queues (refer to pfc no-drop
queues).
To remove a DCB input policy, including the PFC configuration it contains, enter the no
dcb-input
policy-name command in Interface Configuration mode.
Related
Commands
dcb-policy input
To apply the input policy with the PFC configuration to an ingress interface.
Syntax
dcb-policy input policy-name
To delete the input policy, use the no dcb-policy input command.
Parameters
Defaults
None
Command Modes
INTERFACE
Command
History
Usage
Information
This command is supported in Programmable-Mux (PMUX) mode only.
If you apply an input policy with PFC disabled (no pfc mode):
• You can enable link-level flow control on the interface. To delete the input policy, first disable
link-level flow control. PFC is then automatically enabled on the interface because an interface is
by default PFC-enabled.
• PFC still allows you to configure lossless queues on a port to ensure no-drop handling of lossless
traffic.
When you apply an input policy to an interface, an error message displays if:
Version 9.2(0.0) Supported on the M I/O Aggregator
dcb-policy input Applies the input policy with the PFC configuration.
policy-name
Enter the input policy name with the PFC configuration to an ingress interface.
Version 9.2(0.0) Supported on the M I/O Aggregator