Statistics > Rmon Alarm - Cisco SRW2016 User Manual

Chapter 5
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.
WebView Switches
Advanced Configuration
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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