HP E4510-48G, Command Reference Manual

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12-16
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If the result is equal to or smaller than the falling threshold, triggers the event specified by the
event - entry2 argument.
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Before creating an alarm entry, define the events to be referenced in the event table with the
rmon event command.
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When you create an entry, if the values of the specified alarm variable formula ( prialarm-formula ),
sampling type ( absolute changeratio or delta ), rising threshold ( threshold-value1 ) and falling
threshold ( threshold-value2 ) are identical to those of the existing alarm entry, the system
considers their configurations are the same and the creation fails.
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You can create up to 50 pri-alarm entries.
Related commands: display rmon prialarm , rmon event , rmon history , rmon statistics .
Examples
# Create entry 5 in the private alarm table. Calculate the private alarm variables with the
(1.3.6.1.2.1.16.1.1.1.6.1*100/.1.3.6.1.2.1.16.1.1.1.5.1) formula and sample the corresponding
variables at intervals of 10 seconds. Rising threshold of 80 corresponds to event 1 (and record the
event into the log table); falling threshold of 5 corresponds to event 2 (but neither log it nor send a trap).
Set the lifetime of the entry to forever and owner to user1 .
<Sysname> system-view
[Sysname] rmon event 1 log
[Sysname] rmon event 2 none
[Sysname] interface GigabitEthernet 1/0/1
[Sysname-GigabitEthernet1/0/1] rmon statistics 1
[Sysname-GigabitEthernet1/0/1] quit
[Sysname] rmon prialarm 1 (1.3.6.1.2.1.16.1.1.1.6.1*100/.1.3.6.1.2.1.16.1.1.1.5.1)
packet GigabitEthernet1/0/1 10 absolute rising_threshold 80 1 falling_threshold 5 2 entrytype
forever owner user1
1.3.6.1.2.1.16.1.1.1.6.1 is the OID of the node etherStatsBroadcastPkts.1, and 1.3.6.1.2.1.16.1.1.1.5.1
is the OID of the node etherStatsPkts.1. 1 indicates the serial number of the interface statistics entry.
Therefore, if you execute the rmon statistics 5 command, you should use 1.3.6.1.2.1.16.1.1.1.6.5 and
1.3.6.1.2.1.16.1.1.1.5.5.
The above configuration implements the following:
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Sampling and monitoring interface GigabitEthernet1/0/1
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If the portion of broadcast packets received in the total packets is greater than or equal to 80%,
the system will log the event; if the portion is less than or equal to 5%, the system will take no
action.
You can view the event log using the display rmon eventlog command.