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| Sun Ethernet Fabric Operating System ### VLAN Administration Guide

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### Configuring Service Classes and Expedited Traffic

SEFOS VLAN supports multiple traffic classes to handle expedited traffic. Each traffic class is assigned a traffic type based on the time sensitivity of the traffic. The aim is to meet the latency and throughput requirements of time-critical traffic in a LAN environment where both time-critical and non time-critical traffic compete for the network bandwidth.

Each priority-tagged data frame that is received carries priority information. This information is used to map the traffic to one of the supported traffic classes for a given outbound port. Based on the selected traffic class, the frame is scheduled for outbound transmission.

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