Design Considerations
21-2 RMON Configuration
Design Considerations
The C3 supports RMON Packet Capture/Filter Sampling through both the CLI and MIBs, but with
the following constraints:
History Records periodic statistical
samples from a network.
Sample period, number of
samples and item(s) sampled.
“show rmon history” on
page 21-6
“set rmon history” on
page 21-7
“clear rmon history” on
page 21-7
Alarm Periodically gathers
statistical samples from
variables in the probe and
compares them with
previously configured
thresholds. If the monitored
variable crosses a
threshold, an event is
generated.
Alarm type, interval, starting
threshold, stop threshold.
“show rmon alarm” on
page 21-9
“set rmon alarm properties”
on page 21-10
“set rmon alarm status” on
page 21-11
“clear rmon alarm” on
page 21-12
Event Controls the generation and
notification of events from
the device.
Event type, description, last
time event was sent.
“show rmon event” on
page 21-13
“set rmon event properties”
on page 21-14
“set rmon event status” on
page 21-15
“clear rmon event” on
page 21-15
Filter Allows packets to be
matched by a filter
equation. These matched
packets form a data stream
or “channel” that may be
captured.
Packets matching the filter
configuration.
“show rmon channel” on
page 21-16
“set rmon channel” on
page 21-17
“clear rmon channel” on
page 21-18
“show rmon filter” on
page 21-18
“set rmon filter” on
page 21-19
“clear rmon filter” on
page 21-20
Packet
Capture
Allows packets to be
captured upon a filter
match.
Packets matching the filter
configuration.
“show rmon capture
” on
page 21-21
“set rmon capture” on
page 21-22
“clear rmon capture” on
page 21-23
Table 21-1 RMON Monitoring Group Functions and Commands (Continued)
RMON
Group What It Does... What It Monitors... CLI Command(s)
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