Dell Force10 MXL Blade Reference Manual page 168

Defaults
Command Modes
Command
History
Usage
Information
Related
Commands
priority-group
Syntax
Parameters
Defaults
Command Modes
Command
History
Usage
Information
168 | Data Center Bridging
none
DCB INPUT POLICY
Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module
you can enable any number of 802.1p priorities for PFC. Queues to which PFC priority traffic is
mapped are lossless by default. Traffic may be interrupted due to an interface flap (going down and
coming up) when you reconfigure the lossless queues for no-drop priorities in a PFC input policy and
re-apply the policy to an interface.
The maximum number of lossless queues supported on the switch is two.
The configured priority traffic must be supported by a PFC peer (as detected by DCBX) for PFC to be
applied.
dcb-input Create a DCB input policy.
Create an ETS priority group to use with an ETS output policy.
priority-group group-name
To remove the priority group, use the
group-name
none
CONFIGURATION
Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module
A priority group consists of 802.1p priority values that are grouped together for similar bandwidth
allocation and scheduling, and that share the same latency and loss requirements. All 802.1p priorities
mapped to the same queue should be in the same priority group.
All 802.1p priorities should be configured in priority groups associated with an ETS output policy. You
can assign each dot1p priority to only one priority group.
The maximum number of priority groups supported in ETS output policies on an interface is equal to
the number of data queues (4) on the port. The 802.1p priorities in a priority group can map to multiple
queues.
If you configure more than one priority queue as strict priority or more than one priority group as strict
priority, the higher numbered priority queue is given preference when scheduling data traffic
no priority-group command.
Enter the name of the ETS priority group. Maximum: 32 characters.