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Contents iii
July 2004 202-10036-01
TCP Service Polling .................................................................................................5-4
Custom TCP Service Polling ....................................................................................5-5
Managing Polling for the Device ..............................................................................5-5
Emailing or Paging the Administrator on an Event .........................................................5-6
Other Event Types ........................................................................................................5-10
Emailing or Paging Multiple Users ................................................................................5-11
Chapter 5
Troubleshooting and Advanced Configuration
Troubleshooting Network Discovery ...............................................................................6-1
Duration of Network Discovery .................................................................................6-1
Normal Discovery Map Layout .................................................................................6-1
Failure Symptoms and Solutions .............................................................................6-2
Discovery Agent Fails to Connect to the Server ......................................................6-3
Incorrect or Missing Community Names ..................................................................6-3
SNMP Device Access Control List ...........................................................................6-4
Firewalls Block SNMP Operations ...........................................................................6-4
Not Enough Seeds ...................................................................................................6-4
Broadcast Packet Losses .........................................................................................6-5
Limiting the Scope of Discovery ...............................................................................6-5
Setting Up New Filters .............................................................................................6-5
Stopping Discovery Auto-Layout ..............................................................................6-6
Appendix A
Event Parameters ...........................................................................................................1-1
Glossary
List of Glossary Terms ...................................................................................................G-1
Index