Administrator Guide

Version Description
9.9(0.0) Introduced on the C9010.
9.6(0.0) Removed from the S-series. Replaced by the dcb-map commands.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
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, 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).
Related
Commands
dcb-map— to configure PFC and ETS on Ethernet ports that support converged Ethernet traffic.
dcb-policy input
Apply the input policy with the PFC configuration to an ingress interface.
C9000 Series
Syntax
dcb-policy input policy-name
To delete the input policy, use the no dcb-policy input command.
Parameters
policy-name Enter the input policy name with the PFC configuration to an ingress interface.
Defaults none
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.6(0.0) Removed from the S-series. Replaced by the dcb-map commands.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
If you apply an input policy with PFC disabled (no pfc mode on):
• 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 is displayed if:
• The PFC dot1p priorities result in more than two lossless port queues globally on the switch.
Data Center Bridging (DCB) 499