SNMP Traps 85Configuring SNMP Traps 869 P ERFORMANCE M ONITORINGWhat is Performance Monitoring? 87Caching Performance Graphs 87System Performance Graphs 89I/O Performance Graphs 8910 S YSTEM D IAGNOSTICSWhat are System Diagnostics? 91Pinging Other Devices 91Performing a Ping 91Tracing IP Addresses 92Performing a Trace Route 92System Log 93Configuring the System Log 93What is a Syslog Server? 94Obtaining a Syslog Server 94Viewing the System Log 9511 S OFTWARE U PGRADE AND INSTALLATIONWhat is a Software Upgrade? 97Software Upgrade SNMP Traps 98Unsuccessful Software Upgrades 98Detecting Software Upgrades 98Performing a Software Upgrade 99What is a Software Installation? 102Unsuccessful Software Installations 102Performing a Software Installation 102Saving and Restoring Configurations 103Saving a Configuration 105Restoring a Configuration 105