Administrator Guide

To display the PFC and ETS settings in DCB maps, enter the show qos dcb-map command.
Use the dcb-map command to create a DCB map to specify PFC and ETS settings and apply it on Ethernet
ports. After you apply a DCB map to an interface, the PFC and ETS settings in the map are applied when the
Ethernet port is enabled. DCBx is enabled on Ethernet ports by default.
The dcb-map command is supported only on physical Ethernet interfaces.
To remove a DCB map from an interface, enter the no dcb-map map-name command in Interface
configuration mode.
priority-pgid
Assign 802.1p priority traffic to a priority group in a DCB map.
C9000 Series
Syntax
priority-pgid dot1p0_group-num dot1p1_group-num dot1p2_group-num dot1p3_group-
num dot1p4_group-num dot1p5_group-num dot1p6_group-num dot1p7_group-num
Parameters
dot1p0–7_group-
num
Enter the priority group number for each 802.1p class of traffic in a DCB map.
Defaults None
Command Modes DCB MAP
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.7(0.1) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810, S6000 platforms.
Usage Information
PFC and ETS settings are not pre-configured on Ethernet ports. You must use the dcb-map command to
configure different groups of 802.1p priorities with PFC and ETS settings.
Using the priority-pgid command, you assign each 802.1p priority to 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. For example, the
priority-pgid 0 0 0 1 2 4 4 4 command creates the following groups
of 802.1p priority traffic:
• Priority group 0 contains traffic with dot1p priorities 0, 1, and 2.
• Priority group 1 contains traffic with dot1p priority 3.
• Priority group 2 contains traffic with dot1p priority 4.
• Priority group 4 contains traffic with dot1p priority 5, 6, and 7.
To remove a priority-pgid configuration from a DCB map, enter the no priority-pgid command.
priority-group bandwidth pfc
Configure the ETS bandwidth allocation and PFC mode used to manage port traffic in an 802.1p priority group.
C9000 Series
Syntax
priority-group group-num {bandwidth percentage| strict-priority} pfc {on | off}
Data Center Bridging (DCB) 533