Reference Guide

Data Center Bridging | 469
Command
History
Related
Commands
Usage
Information
By default, iSCSI is enabled on the unit and flowcontrol is enabled on all of the interfaces or if
link-level flow control is enabled on one or more interfaces. To enable DCB, do one of the following:
• Apply the
dcb-input policy command with the command no pfc-mode on to all the interfaces.
• Disable flow-control on all of the interfaces.
dcb-input
Create a DCB input policy to apply pause or flow control for specified priorities using a configure
delay time.
Syntax
dcb-input policy-name
To delete the DCB input policy, use the no dcb-input command.
Parameters
Defaults
none
Command Modes
CONFIGURATION
Command
History
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, you must 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
Version 8.3.19.0 Introduced on the S4820T
Version 8.3.12.0 Introduced on the S4810.
Version 8.3.16.0 Introduced on MXL 10/40GbE Switch IO Module
dcb-policy input Apply the input policy with the PFC configuration to an ingress interface.
policy-name
Maximum: 32 alphanumeric characters.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.12.0 Introduced on the S4810.
Version 8.3.16.0 Introduced on MXL 10/40GbE Switch IO Module
dcb-policy input Apply the input policy with the PFC configuration.