76 Switch FeaturesQuality of Service (QoS) FeaturesDifferentiated Services (DiffServ)The QoS Differentiated Services (DiffServ) feature allows traffic to beclassified into streams and given certain QoS treatment in accordance withdefined per-hop behaviors. PowerConnect 7000 Series switches support bothIPv4 and IPv6 packet classification.For information about configuring DiffServ, see "Configuring DifferentiatedServices" on page 1085.Class Of Service (CoS)The Class Of Service (CoS) queueing feature lets you directly configurecertain aspects of switch queuing. This provides the desired QoS behavior fordifferent types of network traffic when the complexities of DiffServ are notrequired. CoS queue characteristics, such as minimum guaranteedbandwidth and transmission rate shaping, are configurable at the queue (orport) level.For information about configuring CoS, see "Configuring Class-of-Service" onpage 1115.Auto Voice over IP (VoIP)This feature provides ease of use for the user in setting up VoIP for IP phoneson a switch. This is accomplished by enabling a VoIP profile that a user canselect on a per port basis.For information about configuring Auto VoIP, see "Configuring Auto VoIP" onpage 1131.NOTE: Some features that can affect QoS, such as ACLs and Voice VLAN, aredescribed in other sections within this chapter.
