3Com MSR 30, MSR 50 Configurations the same and the creation fails, # Remove private alarm entry

2326 CHAPTER 153: RMON CONFIGURATION COMMANDS

Description Use the rmon prialarm command to create an entry in the private alarm table of RMON.

Use the undo rmon prialarm command to remove a private alarm entry from the private alarm table of RMON.

The following is how the system handles private alarm entries:

1Samples the private alarm variables in the private alarm formula at the specified sampling interval.

2Performs calculation on the sampled values with the formula.

3Compares the calculation result with the predefined thresholds and does the following:

■If the rising threshold is reached, triggers the event specified by the event-entry1argument.

■If the falling threshold is reached, triggers the event specified by the event-entry2argument.

n	■ Before creating an alarm entry, define the events to be referenced in the event
	table with the rmon event command.
	■ 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 the same and the creation fails.
	■ You can create up to 50 pri-alarm entries.
	■ The rising alarm and falling alarm are alternate.

Example # 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 to get the percentage of broadcasts received on Ethernet 1/0 in the total packets. When this ratio reaches or is bigger than the rising threshold of 50, trigger event 1; when this ratio reaches or drops under the falling threshold, trigger event 2. Set the lifetime of the entry to forever and owner to user 1.

<Sysname> system-view [Sysname] rmon event 1 log

[Sysname] rmon event 2 none

[Sysname] interface ethernet 1/0 [Sysname-Ethernet1/0] rmon statistics 1

[Sysname-Ethernet1/0] quit

[Sysname] rmon prialarm 5 (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 Ethernet1/0 10 absolute rising_threshold 50 1 falling_threshold 5 2 entrytype forever owner user1

# Remove private alarm entry 10.

<Sysname> system-view [Sysname] undo rmon prialarm 10