ProSafe
®
Plus Switch Configuration Utility User Guide
4-2 Quality of Service Configuration
v1.0, February 2010
QoS Global Configuration
Global configuration allows you to assign priorities for how data will be transmitted by the switch. Priority
can be assigned either by port number (Port Based) or by the type of data being transmitted (802.1p based).
You would typically want to assign a low priority for normal classes of data (email, internet browsing, and
ordinary data transfers) and high priority to video, voice, and other delay sensitive data.
Port Based Priority
Port Based priority works by assigning a priority to all data passing through a particular port. A higher
priority will transmit data with a minimum of delays. If packets arrive at several ports at the same time, the
ports configured as higher priority will transmit their packets first. This means that you need to determine
which ports are going to carry delay sensitive data.
Some switches allow you to select between two priority levels (High and Low). Others allow four levels
(High, Medium, Normal, and Low).
2 priority levels
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