Instruction Manual

1
4 Station Bypass Switch with Heartbeat
Introduction
Thank you for choosing the most versatile Bypass Switch available today.
Whether you are a novice or an expert, this installation guide is designed to
help answer any questions and provide a quick set-up reference.
Net Optics 4 Station Bypass Switches with Heartbeat provide a permanent and
trouble-free access port for up to four in-line network security and monitor-
ing segments. These Bypass Switches automatically switch network trafc
through added in-line devices or bypass devices that are about to be removed.
With the heartbeat technology, the 4 Station Bypass Switch protects up to four
network trafc links independently against signal loss, power loss and applica-
tion failure to the attached in-line devices.
Link Fault Protection
The 4 Station Bypass Switch with Heartbeat monitors the attached in-line
device by sending a heartbeat packet to the device. If each Bypass Switch
does not receive the heartbeat back, it automatically switches network trafc
to bypass the unresponsive device—even if the device is still receiving power.
Each Bypass continues to send the heartbeat and restores the trafc through
the in-line device as soon as the link is restored.
Uninterrupted Trafc
The 4 Station Bypass Switch supports fail-open monitoring with any in-line
device when it shares the same power source as the in-line appliance. For
as long as the Bypass Switch is receiving power, it diverts network trafc to
attached in-line devices. In this state, all in-line trafc is routed directly to the
devices connected to the 4 Station Bypass Switch segment.
When the 4 Station Bypass Switch loses power, in-line trafc continues to
ow through the network links, but is no longer routed through the devices.
This allows the in-line devices to be removed and replaced without network
downtime. Once power is restored to the Bypass Switch, network trafc is
seamlessly diverted to the in-line devices, allowing it to resume their critical
functions.
Three Simple Steps
Three quick steps is all it takes to establish a secure connection point for
inline devices. For special applications, customize the bypass trigger and
Heartbeat rate from an RS232 command line interface.