User guide
E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
9-1
9
Quality of Service (QoS)
This chapter covers the following topics:
• Overview of Policy-Based Quality of Service on page 9-2
• Applications and Types of QoS on page 9-3
• Assigning QoS Attributes on page 9-5
• QoS Profiles on page 9-6
• Traffic Groupings and Creating a QoS Policy on page 9-8
— IP-Based Traffic Groupings on page 9-10
— MAC-Based Traffic Groupings on page 9-10
— Explicit Class of Service (802.1p and DiffServ) Traffic Groupings on page 9-12
— Physical and Logical Groupings on page 9-20
• Verifying Configuration and Performance on page 9-21
• Modifying a QoS Policy on page 9-23
• Intra-Subnet QoS on page 9-24
• Dynamic Link Context System on page 9-25
Policy-Based Quality of Service (QoS) is a feature of ExtremeWare and the Extreme
switch architecture that allows you to specify different service levels for traffic
traversing the switch. Policy-Based QoS is an effective control mechanism for networks
that have heterogeneous traffic patterns. Using Policy-Based QoS, you can specify the
service level that a particular traffic type receives.