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Chapter 5: Using the Web-based Utility for Configuration
Statistics Tab - RMON Alarms
16- or 24-Port 10/100/1000 Gigabit Switch with WebView
Oversize Packets. This is the number of oversized packets (over 1518 octets) received on the interface since the
Switch was last refreshed.
Fragments. This is the number of fragments (packets with fewer than 64 octets, excluding framing bits) received
on the interface since the Switch was last refreshed.
Jabbers. This is the total number of received packets that were longer than 1518 octets. (This number excludes
frame bits.)
Collisions. This is the number of collisions received on the interface since the Switch was last refreshed.
Utilization. This is the percentage of packet utilization across the entire Switch.
Statistics Tab - RMON Alarms
The RMON Alarms screen displays the network alarms you have set. When the network experiences problems or
events, such as rising and falling thresholds, then a network alarm will occur.
Alarm Entry. This identifies a specific alarm.
Counter Name. This is the selected MIB (Management Information Base) variable; for example, this can be the
total number of octets received, the number of unicast packets transmitted, the number of pause frames
received, the number of oversize packets.
Interface. This is the interface for which RMON statistics are displayed, either a port or LAG.
Counter Value. This is the value of the selected MIB variable.
Sample Type. This is the sampling method for the selected variable, Delta, which subtracts the last sampled
value from the current value and then compares the difference to the threshold, or Absolute, which compares
values directly with the thresholds at the end of the sampling interval.
Rising Threshold. This is the rising counter value that triggers the rising threshold alarm.
Rising Event. This is how alarms are reported, by Log, Trap, or Log and Trap.
Falling Threshold. This is the falling counter value that triggers the falling threshold alarm.
Falling Event. This is how alarms are reported, by Log, Trap, or Log and Trap.
Startup Alarm. This is the trigger that activates the alarm generation.
Figure 5-48: Statistics - RMON Alarms
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