Netgear XCM8810 - 8800 SERIES 10-SLOT CHASSIS SWITCH ユーザーズマニュアル
Chapter 15. QoS
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NETGEAR 8800 User Manual
queues and QoS profiles is forwarded to the egress port rate-shaping feature, which applies
QoS to the entire port. When multiple QoS profiles are contending for egress bandwidth, the
scheduler determines which queues are serviced.
QoS to the entire port. When multiple QoS profiles are contending for egress bandwidth, the
scheduler determines which queues are serviced.
The following sections provide more information on QoS:
• Meters
Applications and Types of QoS
Different applications have different QoS requirements.
summarizes the QoS
guidelines for different types of network traffic.
as general guidelines and not as strict
recommendations. After QoS parameters have been set, you can monitor the performance of
the application to determine if the actual behavior of the applications matches your
expectations. It is very important to understand the needs and behavior of the particular
applications you want to protect or limit. Behavioral aspects to consider include bandwidth
needs, sensitivity to latency and jitter, and sensitivity and impact of packet loss.
the application to determine if the actual behavior of the applications matches your
expectations. It is very important to understand the needs and behavior of the particular
applications you want to protect or limit. Behavioral aspects to consider include bandwidth
needs, sensitivity to latency and jitter, and sensitivity and impact of packet loss.
Note:
Full-duplex links should be used when deploying policy-based QoS.
Half-duplex operation on links can make delivery of guaranteed
minimum bandwidth impossible.
minimum bandwidth impossible.
The following sections provide more information on the traffic types listed in
Table 41. Traffic Type and QoS Guidelines
Traffic type
Key QoS parameters
Voice
Minimum bandwidth, priority
Video
Minimum bandwidth, priority, buffering (varies)
Database
Minimum bandwidth
Web browsing
Minimum bandwidth for critical applications, maximum bandwidth for noncritical
applications
applications
File server
Minimum bandwidth