Users Guide

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 conguration
mode.
You can enable or disable pfc mode on the DCB mode using the pfc mode on or pfc mode off command.
priority-pgid
Assign 802.1p priority trac to a priority group in a DCB map.
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 trac in a DCB map.
Defaults None
Command Modes DCB MAP
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
9.8(1.0) Introduced on the Z9100–ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.3(0.0) Introduced on the S4810, S6000 platforms.
Usage Information
PFC and ETS settings are not pre-congured on Ethernet ports. You must use the dcb-map command to
congure dierent 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 trac:
• Priority group 0 contains trac with dot1p priorities 0, 1, and 2.
• Priority group 1 contains trac with dot1p priority 3.
• Priority group 2 contains trac with dot1p priority 4.
• Priority group 4 contains trac with dot1p priority 5, 6, and 7.
To remove a priority-pgid conguration from a DCB map, enter the no priority-pgid command.
For PFC enabled priorities, it is recommended to map single priority per Priority group.
502 Data Center Bridging (DCB)