© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
QoS
939393
© 2003, Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
949494
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
QoS Terminology
• QoS labels are used to prioritize traffic
COS, TOS, DSCP
• Classification is selection of traffic based on
labels, policy
• Marking is application of QoS labels to traffic
• Policing is process by which the switch limits the
bandwidth consumed by a flow of traffic
• Queuing is placing of traffic in different
transmit queues
• Scheduling is process of emptying the
transmit queues
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