User's Manual

Changing the Custom Name 254
Setting the IP Address for a Manually Added Device 255
Setting the Port Numbers for a Manually Added Link 257
Changing the Community Strings for a Device 258
Changing the Monitoring Settings 261
Changing the Retry and Timeout Settings for a Device or Subnet 262
Changing the Discovery Options for a Subnet 263
Examples 264
Key Considerations 269
Troubleshooting 269
7 MONITORING THE NETWORK
Overview 273
Key Concepts 273
Monitor 273
Monitoring and Event Generation 274
Monitoring State 274
Monitoring State and the Grouped View 276
Monitoring Techniques 276
IP Ping Monitoring 277
SNMP MIB Data Retrieval 277
Service Polling 278
SNMP Trap Receipt 278
Monitor-able Items 279
Monitoring Non-3Com Devices 279
Link Monitoring 279
Components 280
Live Graphs Window 280
Poll Rates 281
Live Graphs Tree 281
Live Graphs Display 282
Displaying Thresholds 283
Live Graphs Toolbar 284
Live Graphs Menu 285
More Detail Dialog Box 286
Detailed Graph Dialog Box 287
Viewing a Monitor’s Component Values 288