Concept Guide

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.
Related Commands
• scheduler — schedules the priority trac in port queues.
• bandwidth-percentage — bandwidth percentage allocated to the priority trac in port queues.
scheduler
Congure the method used to schedule priority trac in port queues.
Syntax
scheduler value
To remove the congured priority schedule, use the no scheduler command.
Parameters
value Enter schedule priority value. The valid values are:
• strict: strict-priority trac is serviced before any other queued trac.
• werr: weighted elastic round robin (werr) provides low-latency scheduling for priority
trac on port queues.
Defaults Weighted elastic round robin (WERR) scheduling is used to queue priority trac.
Command Modes POLICY-MAP-OUT-ETS
Supported Modes Programmable-Mux (PMUX)
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Introduced on the M I/O Aggregator.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
dot1p priority trac on the switch is scheduled to the current queue mapping. dot1p priorities within the same
queue must have the same trac properties and scheduling method.
ETS-assigned scheduling applies only to data queues, not to control queues.
The conguration of bandwidth allocation and strict-queue scheduling is not supported at the same time for a
priority group. If you congure both, the congured bandwidth allocation is ignored for priority-group trac when
you apply the output policy on an interface.
Related Commands
• bandwidth-percentage — bandwidth percentage allocated to priority trac in port queues.
Data Center Bridging (DCB) 123