Cambium Networks PTP 820 Series User Manual page 912

Chapter 19: Quality of Service (QoS) (CLI)
Overview of WFQ (CLI)
The scheduler serves the queues based on their priority, but when two or more queues have data to transmit and
their priority is the same, the scheduler uses Weighted Fair Queuing (WFQ) to determine the priorities within each
priority. WFQ defines the transmission ratio, in bytes, between the queues. All the service bundles under the
interface inherit the WFQ profile attached to the interface.
The system supports up to six WFQ interface profiles. Profile ID 1 is a pre-defined read-only profile, and is used as
the default profile. Profiles 2 to 6 are user-defined profiles.
The following table provides an example of a WFQ profile.
Table 250 WFQ Profile Example
Profile ID (1-7)
CoS Queue Weight (Green)
0 20
1 20
2 20
3 20
4 20
5 20
6 20
7 20
You can attach one of the configured interface WFQ profiles to each interface. By default, the interface is assigned
Profile ID 1, the pre-defined system profile.
Configuring a WFQ Profile (CLI)
To define a WFQ profile, enter the following command in root view:
root> ethernet qos wfq-weight-profile-tbl add profile-id <profile.id>
cos0-weight <cos0-weight> cos1-weight <cos1-weight> cos2-weight <cos2-
weight> cos3-weight <cos3-weight> cos4-weight <cos4-weight> cos5-weight
<cos5-weight> cos6-weight <cos6-weight> cos7-weight <cos7-weight>
To edit an existing WFQ profile, enter the following command in root view:
root> ethernet qos wfq-weight-profile-tbl edit profile-id <profile.id>
cos0-weight <cos0-weight> cos1-weight <cos1-weight> cos2-weight <cos2-
weight> cos3-weight <cos3-weight> cos4-weight <cos4-weight> cos5-weight
<cos5-weight> cos6-weight <cos6-weight> cos7-weight <cos7-weight>
To display the parameters of a WFQ profile, enter the following command in root view:
Queue Weight (Yellow – not
visible to users, and cannot be
edited)
20
20
20
20
20
20
20
20
phn-3965_006v002
Page 19-45
Configuring Scheduling (CLI)