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