CHAPTER
48-1
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
48
Configuring RMON
This chapter describes how to configure Remote Monitoring (RMON) on the Catalyst 6500 series
switches.
Note For complete syntax and usage information for the commands that are used in this chapter, refer to the
Catalyst 6500 Series Switch Command Reference publication.
This chapter consists of these sections:
• Understanding How RMON Works, page 48-1
• Enabling RMON on the Switch, page 48-2
• Viewing the RMON Data, page 48-2
• Supported RMON and RMON2 MIB Objects, page 48-3
Understanding How RMON Works
RMON is an Internet Engineering Task Force (IETF) standard monitoring specification that allows the
various network agents and console systems to exchange network monitoring data. The supervisor
engine software provides embedded support for these components of the RMON specification (see the
“Supported RMON and RMON2 MIB Objects” section on page 48-3 for details):
• The following RMON groups are defined in RFC 1757:
–
Statistics (RMON group 1) for Ethernet, Fast Ethernet, Fast EtherChannel, and Gigabit Ethernet
switch ports (uses 140 bytes of supervisor engine RAM per port)
–
History (RMON group 2) for Ethernet, Fast Ethernet, Fast EtherChannel, and Gigabit Ethernet
switch ports (uses 3 KB of supervisor engine RAM for the first 50 buckets; each additional
bucket uses another 56 bytes)
–
Alarm (RMON group 3; each alarm configured uses 1.3 KB of supervisor engine RAM)
–
Event (RMON group 9; each event configured uses 1.3 KB of supervisor engine RAM)
• The following RMON2 groups are defined in RFC 2021:
–
UsrHistory (RMON2 group 18)
–
ProbeConfig (RMON2 group 19)
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