User's Manual

HAPTER

| Configuring the Switch

Quality of Service

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WEB INTERFACE

To configure ingress port policing:

1. Click Advanced Configuration, QoS, Port Policing.

2. Enable port policing as required for any port, set the maximum ingress

rate and unit of measure, and then enable flow control if required.

3. Click Save.

Figure 78: Configuring Ingress Port Policing

CONFIGURING EGRESS

PORT SCHEDULER

Use the QoS Egress Port Schedulers page to show an overview of the QoS

Egress Port Schedulers, including the queue mode and weight. Click on any

of the entries in the Port field to configure egress queue mode, queue

shaper (rate and access to excess bandwidth), and port shaper.

PATH

Advanced Configuration, QoS, Port Scheduler

PARAMETERS

These parameters are displayed:

Displaying QoS Egress Port Schedulers

◆ Port – Port identifier.

◆ Mode – Shows the scheduling mode for this port.

◆ Weight – Shows the weight of each egress queue used by the port.

Configuring QoS Egress Port Scheduler, Queue Scheduler and Port Shapers

◆ Scheduler Mode – The switch can be set to service the queues based

on a strict rule that requires all traffic in a higher priority queue to be

processed before the lower priority queues are serviced, or Deficit

Weighted Round-Robin (DWRR) queuing which specifies a scheduling

weight for each queue. (Options: Strict, Weighted; Default: Strict)

DWRR services the queues in a manner similar to WRR, but the next

queue is serviced only when the queue’s Deficit Counter becomes

smaller than the packet size to be transmitted.

Note that weighted scheduling uses a combination of weighted service

for queues 0 - 6, and strict service for the high priority queues 7 and 8.