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2.5
Advanced Platform Features
2.5.1
Intrusion Detection
The FWA-2320 does not support intrusion detection by default. This feature has been
reserved in the motherboard design, though, and can be enabled at system level via
customization. Please contact your Advantech representative should you be inter-
ested in this option.
2.5.2
Watchdog
The FWA-2320 provides a programmable watchdog that may be used to reset the
system in case it bites due to malfunctioning application software to restore the unit
to a known good state. The watchdog is based on intel's TCO timer and is integrated
in the Atom C2000 device. The TCO watchdog timer is supported under Linux via a
kernel driver (iTCO_wdt.ko). Please refer to Linux as well as ATOM C2000 documen-
tation should you need more details.
2.5.3
LAN Bypass
For a detailed description of the LAN Bypass functionality and the related software
API, please refer to the Advanced LAN Bypass User's Manual.
LAN bypass allows automated or manual control of the connectivity between two
LAN ports grouped into a bypass segment and the host:
Figure 2.18 Connectivity options of LAN ports in a bypass segment
In "connect" mode, the ports on a segment are connected to the host via NICs. Traffic
will enter and leave the ports just like on a regular NIC.
In "disconnect" mode, the ports are disconnected from the host and from each other.
No traffic can flow through the ports
In "bypass" mode, the two ports are disconnected from the host, but connected to
each other. Traffic entering the system on one port will be sent out on the other port
and vice versa.
"Bypass mode" is used to allow traffic to flow through the system when the system is
in a non operational state such as loss of power or in case the application is unre-
sponsive. Application health is monitored by a configurable watchdog.
"Disconnect" mode is typically used to block any traffic until the system has fully
started up and the application SW is in a well defined state allowing to handle traffic
properly.
Connectivity can be auto controlled by a number of system events:
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FWA-2320 User Manual
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