Users Guide

If you congure 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 trac.
You must fully dene the priority-group prole with a PGID and priorities before mapping it to a QoS policy
because the PGID and priorities are unique keys of the trac class group (TCG) that dene the QoS policy.
You must disable the DCB output policy before changing the PGID or priorities of a priority group assigned
to that DCB output policy.
Related Commands
• priority-list — congures the 802.1p priorities for an ETS output policy.
• set-pgid — congures the priority-group.
qos-policy-output ets
To congure the ETS bandwidth allocation and scheduling for priority trac, create a QoS output policy.
Syntax
qos-policy-output policy-name ets
To remove the QoS output policy, use the no qos-policy-output ets command.
Parameters
policy-name Enter the policy name. The maximum is 32 characters.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.12.0 Introduced on the S4810.
Version 8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
If an error occurs in an ETS output-policy conguration, the conguration is ignored and the scheduler and
bandwidth allocation settings are reset to the ETS default values (all priorities are in the same ETS priority
group and bandwidth is allocated equally to each priority).
If an error occurs when a port receives a peer’s ETS conguration, the port’s conguration is reset to the
previously congured ETS output policy. If no ETS output policy was previously applied, the port is reset to
the default ETS parameters.
You can only associate output QoS policy proles with the priority groups in the DCB output prole context;
output QoS policy proles are not permitted on output policy-maps.
WRED, ECN, rate shaping, and rate limiting are not supported in output policies because DCBx does not
negotiate these parameters with peer devices. You can apply a QoS output policy with WRED and/or rate
shaping on a DCBx CIN-enabled interface.
If you enable the scheduler command for a QoS ETS output policy, no bandwidth percentage is assigned
to the policy.
Related Commands
• scheduler — schedules the priority trac in port queues.
Data Center Bridging (DCB)
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