Users Guide

If you congure more than one priority group as strict priority, the higher numbered priority queue is given
preference when scheduling data trac.
If a priority group does not use its allocated bandwidth, the unused bandwidth is made available to other priority
groups.
To remove a priority-group conguration in a DCB map, enter the no priority-group bandwidth pfc
command.
By default, equal bandwidth is assigned to each dot1p priority in a priority group. Use the bandwidth parameter
to congure the bandwidth percentage assigned to a priority group. The sum of the bandwidth allocated to all
priority groups in a DCB map must be 100% of the bandwidth on the link. You must allocate at least 1% of the total
port bandwidth to each priority group.
dcb-map stack-unit all stack-ports all
Apply the specied DCB map on all ports of the switch stack.
Syntax
dcb-map stack-unit all stack-ports all dcb-map-name
To remove the PFC and ETS settings in a DCB map from all stack units, use the no dcb-map stack-unit
all stack-ports all command.
Parameters
dcb-map-name Enter the name of the DCB map.
Defaults None
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810 and S6000 platforms.
Usage Information The dcb-map stack-unit all stack-ports all command overwrites any previous DCB maps applied
to stack ports.
dcb pfc-shared-buer-size
Congure the maximum amount of shared buer size for PFC packets in kilobytes.
Syntax
dcb pfc-shared—buffer—size buffer-size
Parameters
buer-size Enter a number in the range of 0 to 7787.
Default The default is 832KB.
Command Modes CONFIGURATION mode
504 Data Center Bridging (DCB)