Rmon Prialarm - 3Com 5500-EI PWR Reference Manual

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Use the rmon history command to add an entry to the history control table. If you do not specify the

owner text keyword/argument combination, the owner of the entry is displayed as "null".

Use the undo rmon history command to remove an entry from the history control table.

You can use the rmon history command to sample a specific port. You can also set the sampling

interval and the number of the samples that can be saved. After you execute this command, the RMON

system samples the port periodically and stores the samples for later retrieval. The sampled information

includes utilization, the number of errors, and total number of packets.

You can use the display rmon history command to display the statistics of the history control table.

# Create the history control entry numbered 1 for Ethernet 1/0/1, with the table size being 10, the

sampling interval being 5 seconds, and the owner being user1.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname]interface Ethernet 1/0/1

[Sysname-Ethernet1/0/1]rmon history 1 buckets 10 interval 5 owner user1

# Remove the history control entry numbered 15.

[Sysname-Ethernet1/0/1] undo rmon history 15

rmon prialarm

rmon prialarm entry-number 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

entry-number: Extended alarm entry index, in the range 1 to 65535.

prialarm-formula: Expression used to perform operations on the alarm variables, a string of 1 to 256

characters. The alarm variables in the expression must be represented by OIDs, for example,

(.1.3.6.1.2.1.2.1.10.1)*8. The operations available are addition, subtraction, multiplication and division

operations. The operation results are rounded to values that are of long integer type. To prevent invalid

operation results, make sure the operation results of each step are valid long integers.

prialarm-des: Alarm description, a string of 1 to 128 characters.

sampling-timer: Sampling interval (in seconds), in the range 10 to 65535.

delta | absolute | changeratio: Specifies the sample type.

threshold-value1: Upper threshold, in the range 0 to 2147483647.

event-entry1: Index of the event entry that corresponds to the rising threshold, in the range 0 to 65535.

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