
vi
117362-A Rev. A
Customizing DHCP ................................................................................................1-11
Starting RARP Services ...............................................................................................1-12
Enabling RARP on an Interface .............................................................................1-12
Customizing RARP ................................................................................................1-13
Chapter 2
SNMP, RMON, BootP,
DHCP, and RARP Concepts
SNMP Overview .............................................................................................................2-1
SNMP Messages .....................................................................................................2-2
SNMP Communities .................................................................................................2-3
SNMP Implementation Notes .........................................................................................2-4
Internet Protocol .......................................................................................................2-4
Events and Traps ......................................................................................................2-4
Protocol Entities .................................................................................................2-5
Severity Levels ...................................................................................................2-5
SNMP Trap Format ............................................................................................2-6
Thresholds ...............................................................................................................2-7
Threshold Example ..................................................................................................2-7
Event Message Format ......................................................................................2-8
State of a Threshold ..........................................................................................2-9
Memory Considerations .....................................................................................2-9
RMON Overview .............................................................................................................2-9
How RMON Works .................................................................................................2-10
RMON Architecture ................................................................................................2-11
RMON MIB Groups ................................................................................................2-12
RMON MIB Group Controls and Functions ............................................................2-13
Statistics Group ...............................................................................................2-13
History Group ..................................................................................................2-13
Host Group ......................................................................................................2-14
HostTopN Group ..............................................................................................2-14
Matrix Group ....................................................................................................2-14
Filter Group ......................................................................................................2-14
Capture Group .................................................................................................2-15
Alarm Group ....................................................................................................2-15
Event Group .....................................................................................................2-16
Comentarios a estos manuales