Appendix D: Programming Lan Bypass - Lanner FW-7580 User Manual

Appendix D
Appendix D:
Programming LAN Bypass
The bypass function is used to link two independent
Ethernet ports when the system crash or powers off.
This means if your system is equipped with a LAN Bypass
function, a condition in your system will not interrupt your
network traffic. There are typically two communication
states for the bypass function, one is "Normal" state and
another is "Bypass" state. Lanner provides three methods
for enabling the LAN Bypass function:
1. When the system powers off, it can be forced to enable
the LAN Bypass function through the BIOS settings.(
See BIOS Settings)
2. User can enable or disable the LAN Bypass function
which is Controlled by GPIO by programming .
3. A watchdog timer can be used to control the LAN
Bypass function by programming.
Please refer to the LAN_Bypass_Watchdog folder on the
Driver and Manual CD.
To compiler:
gcc wdbp.c -o wdbp
then switch to a root account to run ./LLCM2 for
excution:
./wdbp
For sample LAN bypass code, please see the LAN_Bypass
folder on the Driver and Manual CD.
Fro a description of the physical LAN ports equipped with
this function, refer to Front Panel Features in Chapter 1
Introduction.
Network Application Platforms
Programming LAN Bypass
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