Defining General Qos Settings - D-Link Web Smart DES-3252P Install Manual

CoS Services
After packets are assigned to a specific egress queue, CoS services can be assigned to the queue. Egress
queues are configured with a scheduling scheme by one of the following methods:
•
Strict Priority — Ensures that time-sensitive applications are always forwarded. Strict Priority (SP) allows
the prioritization of mission-critical, time-sensitive traffic over less time-sensitive applications.
For example, under SP, voice over IP (VoIP) traffic can be prioritized so that it is forwarded before FTP or
e-mail (SMTP) traffic.
•
Weighted Round Robin — Ensures that a single application does not dominate the device forwarding
capacity. Weighted Round Robin (WRR) forwards entire queues in a round robin order. All queues can
participate in WRR, expect SP queues. SP queues are serviced before WRR queues. If the traffic flow is
minimal, and SP queues do not occupy the whole bandwidth allocated to a port, the WRR queues can share
the bandwidth with the SP queues. This ensures that the remaining bandwidth is distributed according to the
weight ratio. If WRR is selected, the following weights are assigned to the queues: 1, 2, 3, 4.
This section contains information for configuring QoS, and includes the following topics:
•

Defining General QoS Settings

•
Configuring QoS Mapping
•
Configuring Basic Mode
•
Configuring Advanced QoS Settings
Defining General QoS Settings
This section contains information for defining general QoS settings and includes the following topics:
•
Configuring CoS General Settings
•
Configure Bandwidth Settings
•
Defining Queues
Configuring CoS General Settings
The CoS Global Parameters Page contains information for enabling CoS globally and on specific interfaces. After
CoS has been configured, the original device CoS default settings can be reassigned to the interface in the CoS
Global Parameters Page. To enable CoS:
1. Click Basic Setup > Quality of Service > Global Parameters > CoS. The CoS Global Parameters Page
opens:
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Configuring Quality of Service
Defining General QoS Settings