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CONTENTS ABOUT THIS GUIDE Conventions 8 Related Documentation 9 Documentation Comments 9 Product Registration 10 1 SWITCH FEATURES OVERVIEW What is Management Software? 11 Switch Features Explained 11 Automatic IP Configuration 12 Port Security 12 Aggregated Links 12 Auto-negotiation 12 Multicast Filtering 13 Spanning Tree Protocol and Rapid Spanning Tree Protocol 13 Switch Database 14 Traffic Prioritization 14 RMON 14 Broadcast Storm Control 15 VLANs 15 Configuration Save and Restore 15 2 OPTIMIZING BANDWIDTH Port Features 17 Duplex 17 Flow Control 18 Auto-negotiation 18 Aggregated Links 19 How 802.3ad Link Aggregation Operates 19 Implementing 802.3ad Aggregated Links 20

Section	Page
About This Guide	7
Conventions	8
Related Documentation	9
Documentation Comments	9
Product Registration	10
Switch Features Overview	11
What is Management Software?	11
Switch Features Explained	11
Automatic IP Configuration	12
Port Security	12
Aggregated Links	12
Auto-negotiation	12
Multicast Filtering	13
Spanning Tree Protocol and Rapid Spanning Tree Protocol	13
Switch Database	14
Traffic Prioritization	14
RMON	14
Broadcast Storm Control	15
VLANs	15
Configuration Save and Restore	15
Optimizing Bandwidth	17
Port Features	17
Duplex	17
Flow Control	18
Auto-negotiation	18
Aggregated Links	19
How 802.3ad Link Aggregation Operates	19
Implementing 802.3ad Aggregated Links	20
Aggregated Links and Your Switch	21
Aggregated Link - Manual Configuration Example	24
Using Multicast Filtering	27
What is an IP Multicast?	27
Benefits of Multicast	28
Multicast Filtering	28
Multicast Filtering and Your Switch	29
IGMP Multicast Filtering	30
Using Resilience Features	33
Resilience Feature Overview	34
Spanning Tree Protocol (STP)	34
Rapid Spanning Tree Protocol (RSTP)	35
What is STP?	35
How STP Works	37
STP Requirements	37
STP Calculation	38
STP Configuration	38
STP Reconfiguration	39
How RSTP Differs to STP	39
STP Example	39
STP Configurations	41
Using STP on a Network with Multiple VLANs	43
Using the Switch Database	45
What is the Switch Database?	45
How Switch Database Entries Get Added	45
Switch Database Entry States	46
Using Traffic Prioritization	47
What is Traffic Prioritization?	48
How Traffic Prioritization Works	48
Traffic Classification	49
Traffic Marking	50
Traffic Re-Marking	52
Traffic Prioritization	52
Traffic Queues	56
Important QoS Considerations	56
Default QoS Configurations	58
Status Monitoring and Statistics	59
RMON	59
What is RMON?	59
The RMON Groups	59
Benefits of RMON	61
RMON and the Switch	61
Alarm Events	62
Setting Up Virtual LANs	63
What are VLANs?	63
Benefits of VLANs	64
VLANs and Your Switch	65
The Default VLAN	65
Communication Between VLANs	65
Creating New VLANs	66
VLANs: Tagged and Untagged Membership	66
VLAN Configuration Examples	67
Using Untagged Connections	67
Using 802.1Q Tagged Connections	68
Using Automatic IP Configuration	71
How Your Switch Obtains IP Information	72
How Automatic IP Configuration Works	72
Automatic Process	72
Important Considerations	72
Server Support	73
Event Log Entries and Traps	73
Configuration Rules	75
Configuration Rules for Gigabit Ethernet	75
Configuration Rules for Fast Ethernet	76
Configuration Rules with Full Duplex	77
Network Configuration Examples	79
Simple Network Configuration Examples	80
Desktop Switch Example	80
Advanced Network Configuration Examples	81
Improving the Resilience of Your Network	81
Enhancing the Performance of Your Network	82
IP Addressing	83
IP Addresses	83
Simple Overview	83
Advanced Overview	84
Subnets and Subnet Masks	86
Default Gateways	88
Glossary	89

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