NA580 Series User
’s Manual
LAN Bypass Configuration
55
Appendix A
LAN Bypass Configuration
About LAN Bypass
In network security application, it is very important to ensure that network traffic to continue
passing through the device even if hardware failure occurs or operating system crashes. LAN
bypass gives us a solution for this problem.
The NA580 series LAN bypass function is very flexible. It can be selected at any time and any
stage. You can enable LAN bypass for power on state by BIOS, or by software program when
entering into the OS.
Moreover, for power off state, you can set up LAN Bypass through BIOS, or use software
program when entering into the OS. If you don’t do any change, the state will keep the
previous power off state.
The NA580 has LAN bypass capability with the special designed latch relay circuitry. When
LAN bypass function is enabled, a relay closes to act as a bridge to route network data flow
between LAN module
’s LAN port 0 and LAN port 1 (or LAN port 2 and LAN port 3 etc.).
Motherboard has 2 pairs of latch-type LAN bypass LAN port 3 and LAN port 4 / LAN port 5 and
LAN port 6, see below image. The bypass feature can be activated immediately or according
to timer which is configurable from 1 up to 64 seconds. You can write a software program to
control bypass operation behavior to fit your requirement. A LAN bypass sample program is
provided in CD for reference.
Note: The sample codes for the above features can be found in the CD, and they are for
reference purposes only.
Summary of Contents for NA580 series
Page 1: ...NA580 Series SMB Network Appliance User s Manual ...
Page 16: ...NA580 Series User s Manual 10 Hardware and Installation 2 2 Board Layout TOP ...
Page 17: ...NA580 Series User s Manual Hardware and Installation 11 BOTTOM ...
Page 43: ...NA580 Series User s Manual AMI BIOS Setup Utility 37 Console Redirection Settings ...
Page 53: ...NA580 Series User s Manual AMI BIOS Setup Utility 47 PCH IO Configuration ...
Page 66: ...NA580 Series User s Manual 60 WDT Timer for System Rese This page is intentionally left blank ...
Page 76: ...NA580 Series User s Manual 70 Warning This page is intentionally left blank ...