Reference Guide

ETS Commands
The following ETS commands are supported on the S4810 platform.
bandwidth-percentage
Configure the bandwidth percentage allocated to priority traffic in port queues.
S4810
Syntax
bandwidth-percentage percentage
To remove the configured bandwidth percentage, use the no bandwidth-percentage
command.
Parameters
percentage (Optional) Enter the bandwidth percentage. The percentage range is 1
to 100% in units of 1%.
Defaults none
Command Modes QOS-POLICY-OUT-ETS
Command History
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
By default, equal bandwidth is assigned to each port queue and each dot1p priority in a priority
group. Use the bandwidth-percentage command to configure bandwidth amounts in
associated dot1p queues. When specified bandwidth is assigned to some port queues and not
to others, the remaining bandwidth (100% minus assigned bandwidth amount) is equally
distributed to unassigned nonstrict priority queues in the priority group. The sum of the
allocated bandwidth to all queues in a priority group must be 100% of the bandwidth on the link.
ETS-assigned bandwidth allocation applies only to data queues, not to control queues.
The configuration of bandwidth allocation and strict-queue scheduling is not supported at the
same time for a priority group. If you configure both, the configured bandwidth allocation is
ignored for priority-group traffic when you apply the output policy on an interface.
By default, equal bandwidth is assigned to each priority group in the ETS output policy applied
to an egress port if you did not configure bandwidth allocation. The sum of configured
bandwidth allocation to dot1p priority traffic in all ETS priority groups must be 100%. Allocate at
least 1% of the total bandwidth to each priority group and queue. If bandwidth is assigned to
some priority groups but not to others, the remaining bandwidth (100% minus assigned
bandwidth amount) is equally distributed to nonstrict-priority groups which have no configured
scheduler.
Related
Commands
• qos-policy-output ets – creates a QoS output policy.
• scheduler – schedules priority traffic in port queues.
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