Users Guide

Command History
Version Description
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.3(0.0) Introduced on the S4810, S6000 platforms.
Usage Information
Use the dcb-map command to congure priority groups with PFC and/or ETS settings and apply them to
Ethernet interfaces.
Use the priority-pgid command to map 802.1p priorities to a priority group. You can assign each 802.1p
priority to only one priority group. A priority group consists of 802.1p priority values that are grouped
together for similar bandwidth allocation and scheduling, and that share latency and loss requirements. All
802.1p priorities mapped to the same queue must be in the same priority group.
Repeat the priority-group bandwidth pfc command to congure PFC and ETS trac handling for
each priority group in a DCB map.
You can enable PFC on a maximum of two priority queues.
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
Version Description
9.7(0.0) Introduced on the S6000-ON.
528
Data Center Bridging (DCB)