Statistics > rmon alarm, Chapter 5, Advanced configuration – Linksys BUSINESS SERIES SRW224G4 User Manual

Page 38

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Chapter 5

Advanced Configuration

31

WebView Switches

Undersize Packets

Displays the number of undersized

packets (less than 64 octets) received on the interface
since the device was last refreshed.

Oversize Packets

Displays the number of oversized

packets (over 1518 octets) received on the interface since
the device was last refreshed.

Fragments

Displays the number of fragments (packets

with less than 64 octets, excluding framing bits, but
including FCS octets) received on the interface since the
device was last refreshed.

Jabbers

Displays the total number of received packets

that were longer than 1518 octets. This number excludes
frame bits, but includes FCS octets that had either a bad
Frame Check Sequence (FCS) with an integral number of
octets (FCS Error) or a bad FCS with a non-integral octet
(Alignment Error) number. The field range to detect
jabbers is 20–150 ms.

Collisions

Displays the number of collisions received on

the interface since the device was last refreshed.

Utilization

Displays the percentage of the interface

utilized.

Statistics > RMON Alarm

The RMON Alarm screen contains fields for setting network
alarms. Network alarms occur when a network problem, or
event, is detected. Rising and falling thresholds generate
events.

Statistics > RMON Alarm

Alarm Entry

Indicates a specific alarm.

Source 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.

Counter Name

Displays the selected MIB variable.

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.

Rising Threshold

Displays the rising counter value that

triggers the rising threshold alarm. The rising threshold
is presented on top of the graph bars. Each monitored
variable is designated a color.

Rising Event

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.

Both

Indicates that both the Log and Trap mechanism

are used to report alarms.

Falling Threshold

Displays the falling counter value that

triggers the falling threshold alarm. The falling threshold
is graphically presented on top of the graph bars. Each
monitored variable is designated a color.

Falling Event

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 a SNMP trap is generated, and

sent via the Trap mechanism. The Trap can also be
saved using the Trap mechanism.

Both

Indicates that both the Log and Trap mechanism

are used to report alarms.

Startup Alarm

Displays the trigger that activates the

alarm generation. Rising is defined by crossing the
threshold from a low-value threshold to a higher-value
threshold.

Interval

Defines the alarm interval time in seconds.

Owner

Displays the device or user that defined the

alarm.

Use the Add to List button to add the RMON Alarms Table
entry.

The Alarm Table area contains the following additional
field:

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