Dell S6100 Configuration Manual page 499

Parameters
priority-group
group-num
bandwidth
percentage
strict-priority
pfc {on | off}
Defaults None
Command Modes DCB MAP
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version
9.10(0.0)
9.8(1.0)
9.7(0.0)
9.3(0.0)
Usage Information
Use the dcb-map command to configure 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 configure PFC and ETS traffic handling for each
priority group in a DCB map.
You can enable PFC on a maximum of two priority queues.
If you configure more than one priority group as strict priority, the higher numbered priority queue is given
preference when scheduling data traffic.
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 configuration 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 configure 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.
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.
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%.
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.
Configure whether priority-based flow control is enabled (on) or disabled (off) for port
traffic in the priority group.
Description
Introduced on the S6100-ON.
Introduced on the Z9100–ON.
Introduced on the S6000-ON and Z9500.
Introduced on the S4810, S6000 platforms.
Data Center Bridging (DCB) 499