Advanced LAN Bypass, User Manual

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7 Advanced LAN Bypass User Manual
Chapter 2
O
VERVIEW
There are four actions supported by Advanced LAN Bypass:

CONNECT
Connects the bypass segment to the host system (i.e., both network ports of the
segment connect to the respective NICs/host)

DISCONNECT
Disconnects the bypass segment (i.e., both network ports of the segment are
isolated from the respective NICs/host and from each other)

BYPASS
Connects both ports in the bypass segment, while it isolates them from the
respective NICs/host (i.e., network traffic is possible between both ports, but
bypasses the host itself)

DO_NOT_CHANGE
Means that the state will not be changed when the specified event occurs (i.e.,
network connectivity will remain as is).
Figure 2.1 Bypass Actions and Related Port Connectivity
The default action setting for all events is "CONNECT", which means LAN Bypass is
turned off.
Example 1:

Connects the LAN ports to the host system when the system is powered and
operational

Bypasses the NICs in case of power failure or in case application SW hangs

Maintains the states of network connectivity (no change) in case of a system
reset

Master/slave mode is disabled
Table 2.1: Mapping between Events and Actions (Example 1)
Event
CONNECT DISCONNECT BYPASS DO_NOT_ CHANGE
Power Up X
Power Down X
Power Reset X
WDT Start X
WDT Timeout X
External Trigger X
Button Event 1 X
Button Event 2 X
Action