Netgear XSM4324FS User Manual - Page 479

M4300 Intelligent Edge Series Fully Managed Stackable Switches 10. Use WRED Drop Probability Scale to determine the packet drop probability for the current drop precedence level. The range is 0 to 100. The default is 10. 11. Click the Apply button. Your settings are saved. The following table describes the nonconfigurable information that is displayed. Table 183. CoS Interface Queue Drop Precedence Status Field Interface Queue ID Drop Precedence Level WRED Minimum Threshold WRED Maximum Threshold WRED Drop Probability Scale Description The CoS configurable interface. The queue ID. The drop precedence level. The weighted RED minimum queue threshold value. The weighted RED maximum queue threshold value. The packet drop probability value. Manage Differentiated Services The QoS feature contains Differentiated Services (DiffServ) support that allows traffic to be classified into streams and given certain QoS treatment in accordance with defined per-hop behaviors. Standard IP-based networks are designed to provide best effort data delivery service. Best effort service implies that the network delivers the data in a timely fashion, although there is no guarantee. During times of congestion, packets might be delayed, sent sporadically, or dropped. For typical Internet applications, such as e-mail and file transfer, a slight degradation in service is acceptable and in many cases unnoticeable. Conversely, any degradation of service has undesirable effects on applications with strict timing requirements, such as voice or multimedia. To use DiffServ for QoS, you must first define the following categories and their criteria: 1. Class. Create classes and define class criteria. 2. Policy. Create policies, associate classes with policies, and define policy statements. 3. Service. Add a policy to an inbound interface. Packets are classified and processed based on defined criteria. The classification criteria are defined by a class. The processing is defined by a policy's attributes. Policy attributes can be defined on a per-class instance basis, and it is these attributes that are applied when a match occurs. A policy can contain multiples classes. When the policy is active, the actions taken depend on which class matches the packet. Configure Quality of Service 479 User Manual