4 queue scheduling – PLANET SGSD-1022 User Manual

Page 237

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User’s Manual of SGSD-1022 / SGSD-1022P

SGSW-2840 / SGSW-2840P

4.10.1.4 Queue Scheduling

The Managed Switch uses the Weighted Round Robin (WRR) algorithm to determine the frequency at which it services each

egress queue. The traffic classes are mapped to one of the four egress queues provided for each port. You can assign a

weight to each of these queues (and thereby to the corresponding traffic priorities). This weight sets the frequency at which each

queue will be polled for service, and subsequently affects the response time for software applications assigned a specific priority

value.

Command Usage

• WRR controls bandwidth sharing at the egress port by defining scheduling weights for allocated service priorities. When

using WRR, assign a weight of 1-15 to each of the hardware queues.

• A queue’s weight must be less than or equal to the weight of the next higher priority queue (that is, Q0 ≤Q1 ≤Q2 ≤ Q3).

1. Click

Priority, Queue Scheduling.

2.

Select and highlight a Traffic Class (i.e., output queue), enter a Weight Value, then click Apply.

Figure 4-10-4 Queue Scheduling page screenshot

The page includes the following fields:

Object

Description

WRR Setting Table

Displays a list of weights for each traffic class (i.e., queue).

Weight Value

Set a new weight for the selected traffic class.

(Range: 1-15)

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