Net Optics iTap GigaBit Fiber Port Aggregator with SFP - Manual (Page 2)

allow you to remotely set parameters, view
status information, and monitor traffic
statistical data. These interfaces provide
security and performance information such
as the number of over- and under-sized
packets, packet collisions, and CRC errors.
You can remotely set alarm thresholds, clear
traffic data counters, and turn a Monitor
Port on or off.
Buffers Absorb Bursts
When traffic levels exceed the capacity
of the receiving NIC, the iTap Port
Aggregator stores overflow traffic in buffer
memory. For high-load links, the iTap
Port Aggregator is available with 1GB of
memory. The buffers clear automatically
when traffic volume falls below the
receiving capacity of the NIC. These
buffers allow the iTap Port Aggregator to
absorb traffic bursts, without dropping
packets.
Traffic Monitoring
The iTap Port Aggregator monitors the
usage levels of both sides of a full-duplex
link. Knowing the usage levels is critical for
determining if packets could be dropped
during high-load periods. This information
is displayed on the front panel and is
also available from the remote interfaces.
The iTap Port Aggregator allows you to
set a threshold for each side of the full-
duplex link. For example, the iTap Port
Aggregator can warn you when usage
in either direction passes the 30% level.
When a threshold level is exceeded, the
alarm LED illuminates and the remote
interfaces record the event. The iTap
Port Aggregator records the level of the
highest peak along with the date and
time. Since the iTap Port Aggregator is
monitoring the usage levels, this infor-
mation is always available, regardless of
the aggregation process.
Seeing is Believing
Display and alarm LEDs provide a
quick visual check to ensure that usage
levels are not exceeding the capacity of
either the monitoring device or a pre-
determined threshold. From the display,
you can view the current bandwidth
usage of each side of a full-duplex link
with the size and time of the highest peak.
A quick check of the display lets you know
if there was an event that requires further
investigation. After taking action on a
usage or peak event, you can reset the
data from a recessed Reset button on the
front panel, or from a remote interface.
The iTap Port Aggregator is ready to
detect and display the next critical event.
Access Information Anywhere
Both Web Manager and System Manager
iTap Port Aggregators form an early warning
system to detect network anomolies.
The greatest peaks are also displayed
Current usage is available at a glance