Reference Guide

Data Center Bridging (DCB) | 251
Creating a QoS ETS Output Policy
A QoS output policy that you create to optimize bandwidth on an output interface for specified priority
traffic consists of the ETS settings used in DCBX negotiations with peer devices:
• Bandwidth percentage
• Queue scheduling
To create a QoS output policy with ETS settings, follow these steps:
Step Task Command Command Mode
1 Create a QoS output policy to configure the ETS
bandwidth allocation and scheduling for priority
traffic. Maximum: 32 characters.
qos-policy-output
policy-name ets
CONFIGURATION
2 (Optional) Configure the method used to
schedule priority traffic in port queues. Valid
values:
•
strict - Strict priority traffic is serviced before
any other queued traffic (refer to
Strict-Priority Queueing).
•
werr - Weighted elastic round robin provides
low-latency scheduling for priority traffic on
port queues.
Default: WERR scheduling is used to queue
priority traffic.
Note: If you configure a scheduling method, you
cannot configure bandwidth allocation in Step 3.
scheduler value
POLICY-MAP-OUT-ETS
3 (Optional) Configure the bandwidth percentage
allocated to priority traffic in port queues.
Percentage range: 1 to 100% in units of 1%.
The sum of bandwidth percentage assigned to
dot1p priorities/queues in a priority group should
be 100%.
Default: None.
Note: If you configure bandwidth allocation, you
cannot configure a scheduling method in Step 2.
bandwidth-percentage
percentage
POLICY-MAP-OUT-ETS
4 Exit ETS Output Policy Configuration mode
.
exit
POLICY-MAP-OUT-ETS