Contents
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Catalyst 3550 Multilayer Switch Software Configuration Guide
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Configuring the Trust State on Ports within the QoS Domain 20-22
Configuring the CoS Value for an Interface 20-24
Configuring the DSCP Trust State on a Port Bordering Another QoS Domain 20-25
Configuring a QoS Policy 20-26
Classifying Traffic by Using ACLs 20-27
Classifying Traffic by Using Class Maps 20-30
Classifying, Policing, and Marking Traffic by Using Policy Maps 20-32
Classifying, Policing, and Marking Traffic by Using Aggregate Policers 20-37
Configuring DSCP Maps 20-39
Configuring the CoS-to-DSCP Map 20-39
Configuring the IP-Precedence-to-DSCP Map 20-40
Configuring the Policed-DSCP Map 20-41
Configuring the DSCP-to-CoS Map 20-42
Configuring the DSCP-to-DSCP-Mutation Map 20-43
Configuring Egress Queues on Gigabit-Capable Ethernet Ports 20-44
Mapping CoS Values to Select Egress Queues 20-45
Configuring the Egress Queue Size Ratios 20-46
Configuring Tail-Drop Threshold Percentages 20-47
Configuring WRED Drop Thresholds Percentages 20-48
Configuring the Egress Expedite Queue 20-50
Allocating Bandwidth among Egress Queues 20-50
Configuring Egress Queues on 10/100 Ethernet Ports 20-51
Mapping CoS Values to Select Egress Queues 20-52
Configuring the Minimum-Reserve Levels 20-53
Configuring the Egress Expedite Queue 20-54
Allocating Bandwidth among Egress Queues 20-54
Displaying QoS Information 20-56
QoS Configuration Examples 20-56
QoS Configuration for the Common Wiring Closet 20-57
QoS Configuration for the Intelligent Wiring Closet 20-58
QoS Configuration for the Distribution Layer 20-59
CHAPTER
21 Configuring EtherChannel 21-1
Understanding EtherChannel 21-1
Understanding Port-Channel Interfaces 21-2
Understanding the Port Aggregation Protocol 21-3
PAgP Modes 21-4
Physical Learners and Aggregate-Port Learners 21-5
PAgP Interaction with Other Features 21-5
