Netgear GS108E ProSafe Plus Switches Configuration Utility User Guide - Page 32
QoS Global Configuration
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ProSafe Plus Switch Utility QoS Overview Many different classes of data can be sent across a network. Depending on the volume of traffic on the network and the capacity of the equipment in the network, data can be delayed, or lost and retransmitted before reaching its destination. Normally, lost or delayed data is not a problem because the data is reassembled at the destination. If the data consists of text or numeric data to be stored on the destination computer, you would not notice the delay. But if the data was voice, streaming video, or other delay-sensitive data, delays would be undesirable. Video sequences would be jerky and voice communication would have annoying gaps. The QoS (Quality of Service) feature in the ProSafe Plus switches allows you to control the flow of data passing through the switch. The QoS tab has these options: • QoS. Assigns priorities to data. • Rate Limit. Set limits on transmission rates for data passing through the switch. • Broadcast Filtering. Blocks mass transmissions of broadcast packets from being forwarded to all ports. All the QoS features have default settings. It is not necessary to configure any settings to use the ProSafe Plus switches. The following table lists the default settings. Table 2. QoS Global Configuration Default Settings Feature Setting QoS Mode 802.1p Based Port Priority Low priority for each port Rate Limit Ingress No limit Egress No limit Broadcast Filtering Disabled QoS Global Configuration Global configuration allows you to assign priorities for how the switch transmits data. You can assign priority by port number (port based) or by the type of data being transmitted (802.1p based). You typically assign a low priority for normal classes of data (email, Internet Quality of Service 32