Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 8 RMON Configuration Commands
3Com Corporation
8-10
Description
Use the rmon history command to add a history control entry.
Use the undo rmon history command to remove a history control entry.
The history control table of RMON retains data sampled in a sampling period.
By using this command, you can enable sampling on an interface, set sampling interval
and the number of buckets. After that, RMON periodically collects and saves data on
the specified interface, providing information such as utilization, number of errors, and
total number of packets for later retrieval.
Example
# Add a history control entry.
[3com-Ethernet0/0/0] rmon history 1 buckets 10 interval 10
8.1.10 rmon prialarm
Syntax
rmon prialarm prialarm-entry prialarm-formula prialarm-des sampling-timer { delta |
absolute | changeratio } rising_threshold threshold-value1 event-entry1
falling_threshold threshold-value2 event-entry2 entrytype { forever | cycle
cycle-period } [ owner text ]
undo rmon prialarm entry-number
View
System view
Parameter
prialarm-entry: Prialarm index, in the range 1 to 65,535.
prialarm-formula: Prialarm formula, which returns a long integer. Create your prialarm
formula with caution to prevent errors caused by overflow in each calculating step of
your prialarm formula.
alarm-des: Alarm description, a string of 0 to 127 characters.
sampling-timer: Sampling interval, in the range 10 to 65,535 seconds.
delta | absolute | changeratio: Sets sample type to delta value, change ratio, or
absolute value.
threshold-value1: Rising threshold, a number greater than zero.
event-entry1: Index of the event associated with the rising threshold. It ranges from 0 to
65,535.
threshold-value2: Falling threshold, a number greater than zero.