Administrator Guide

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}
Parameters
priority-group
group-num
Enter the keyword priority-group followed by the number of an 802.1p priority
group. Use the priority-pgid command to create the priority groups in a DCB
map.
bandwidth
percentage
Enter the keyword bandwidth followed by a bandwidth percentage allocated to
the priority group. The range of valid values is 1 to 100. The sum of all allocated
bandwidth percentages in priority groups in a DCB map must be 100%.
strict-priority Configure the priority-group traffic to be handled with strict priority scheduling.
Strict-priority traffic is serviced first, before bandwidth allocated to other priority
groups is made available.
pfc {on | off} Configure whether priority-based flow control is enabled (on) or disabled (off) for
port traffic in the priority group.
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.
Data Center Bridging (DCB) 557