Chapter 6 Qos - D-Link DES-3528 - xStack Switch - Stackable Reference Manual

xStack® DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch Web UI Reference Guide
Chapter 6 QoS
802.1p Settings
Bandwidth Control
Traffic Control Settings
DSCP
HOL Blocking Prevention
Scheduling Settings
SRED
The Switch supports 802.1p priority queuing Quality of Service. The following section discusses the implementation of
QoS (Quality of Service) and benefits of using 802.1p priority queuing.
Advantages of QoS
QoS is an implementation of the IEEE 802.1p standard that allows network administrators a method of reserving
bandwidth for important functions that require a large bandwidth or have a high priority, such as VoIP (voice-over
Internet Protocol), web browsing applications, file server applications or video conferencing. Not only can a larger
bandwidth be created, but other less critical traffic can be limited, so excessive bandwidth can be saved. The Switch
has separate hardware queues on every physical port to which packets from various applications can be mapped to,
and, in turn prioritized. View the following map to see how the Switch implements basic 802.1p priority queuing.
Figure 6-1 Mapping QoS on the Switch
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