User's Manual

Monitoring 81
Logging 82
VLANs 84
Retry/Timeout 84
Security 85
Help > Contents and Index Menu Option 87
Help > Launch User Guide 87
Help > About 3Com
®
Director Menu Option 88
Examples 88
Finding the Product Version 88
Finding the Serial Number, License Number and Activation Key 89
Key Considerations 90
Scheduled Tasks 90
4 DISCOVERING THE NETWORK
Overview 91
Key Concepts 92
The Discovery Process – Detecting Devices 92
IP Ping 93
Device Capability Detection 93
SNMP Type Detection 94
IP to MAC Resolution 94
End Station Type Recognition 94
Web Type Recognition 95
DNS Name Resolution 95
NBX Phone Detection 95
Device Sizing 96
The Discovery Process – Determining Topology 96
Sizing stage 97
Spanning Tree stage 98
Remote Poll Stage (broadcast ARP) 98
Initial Endstation stage 99
Device Resolution Stage 99
Remote Poll Stage (directed pings) 99
Outstanding end station stage 100
Tree Building Stage 100
Clouds – Unknown Topology 100