Linksys MGBLH1 - Gigabit LH Mini-GBIC SFP Transceiver User Manual page 58

Alarms can be set to test data over any specified time interval and can monitor absolute or
changing values, such as a statistical counter reaching a specific value, or a statistic changing by
a certain amount over a set interval. Alarms can be set to respond to either rising or falling
thresholds.
The Alarm Control Table allows you to add, update and delete specific index entries.Interface.
The selected interface on the switch.
Interface—Displays the interface for which RMON statistics are displayed. The possible field
values are:
• Port—Displays the RMON statistics for the selected port.
• LAG—Displays the RMON statistics for the selected LAG.
Statistics—The traffic statistics to be sampled. Select from the drop-down list.
Interval—The time interval in seconds over which data is sampled and compared with the
rising or falling threshold.
Sample Type—Defines the sampling method for the selected variable and comparing the
value against the thresholds. The possible field values are:
• Absolute—Compares the values directly with the thresholds at the end of the sampling
interval.
• Delta—Subtracts the last sampled value from the current value. The difference in the
values is compared to the threshold.
Startup Alarm—Determines how the alarm is activated when the variable is compared to the
thresholds. This can be set to Rising, Falling, or Rising or Falling.
Rising Threshold—An alarm threshold for the sampled variable. If the current value is greater
than or equal to the threshold, and the last sample value was less than the threshold, then an
alarm will be generated. (After a rising event has been generated, another such event will not
be generated until the sampled value has fallen below the Rising Threshold and reaches the
Falling Threshold.)
Falling Threshold—An alarm threshold for the sampled variable. If the current value is less
than or equal to the threshold, and the last sample value was greater than the threshold, then
an alarm will be generated. (After a falling event has been generated, another such event will
not be generated until the sampled value has risen above the Falling Threshold and reaches the
Rising Threshold.)
Rising Event Index—Displays the mechanism in which the alarms are reported. The possible
field values are:
• LOG—Indicates there is not a saving mechanism for either the device or in the
management system. If the device is not reset, the entry remains in the Log Table.
• TRAP—Indicates that an SNMP trap is generated, and sent via the Trap mechanism. The
Trap can also be saved using the Trap mechanism.
SRW2024P User Guide
Using the web-based Utility for Configuration
Statistics Tab - RMON Alarm
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