222
Predefined user roles
network-admin
Parameters
entry-number: Specifies a history control entry index in the range of 1 to 65535.
buckets number: Specifies the expected maximum number of samples to be retained for the entry, in the
range of 1 to 65535. RMON can retain a maximum of 50 samples for each history control entry. If the
expected bucket size exceeds the available history table size, RMON sets the bucket size as closely to the
expected bucket size as is possible. However, the granted bucket size will not exceed 50. For example,
the bucket size for a history control entry will be 30 if the expected bucket size is set to 55, but the
available bucket size is only 30.
interval sampling-interval: Specifies the sampling interval in the range of 5 to 3600 seconds.
owner text: Specifies the entry owner, a case-sensitive string of 1 to 127 characters.
Usage guidelines
You can create RMON history control entries only for Layer 2 or Layer 3 Ethernet interfaces.
The system supports a maximum of 100 history control entries.
If an Ethernet interface has a history control entry, RMON periodically samples packet statistics on the
interface and stores the samples to the history table. When the bucket size for the history control entry is
reached, RMON overwrites the oldest sample with the most recent sample.
You can configure multiple history control entries for one interface. Make sure their entry numbers and
sampling intervals are different.
Examples
# Create RMON history control entry 1 for GigabitEthernet 2/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 2/0/1
[Sysname-GigabitEthernet2/0/1] rmon history 1 buckets 10 interval 5 owner user1
Related commands
display rmon history
rmon prialarm
Use rmon prialarm to create an entry in the private alarm table.
Use undo rmon prialarm to remove an entry from the private alarm table.
Syntax
rmon prialarm entry-number prialarm-formula prialarm-des sampling-interval { absolute | delta }
[ startup-alarm { falling | rising | rising-falling } ] rising-threshold threshold-value1 event-entry1
falling-threshold threshold-value2 event-entry2 entrytype { forever | cycle cycle-period } [ owner text ]
undo rmon prialarm entry-number
Default
The private alarm table does not contain any entries.
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