NCA-4012 User Manual
72
The bypass function is used to link two independent Ethernet ports when the system crashes 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. Different from the previous two generations (Gen1 and Gen2), the Lanner
Bypass Gen 3 employs a programming method to control the bypass function by software. There are typically
two types of communication status for the bypass function, one is “Normal“ and another is “Bypass “ status.
Furthermore, the Lanner Bypass software is capable of controlling the bypass status in the following 3
instances.
When the system powers off, it can be forced to enable the LAN Bypass function.
When the system is in the just-on state which is a brief moment when it powers up.
The Lanner bypass possesses the following features:
1.
Communication through SMBUS (I2C)
2.
Independent bypass status control for each pair up to a total of 4 pairs
3.
Lanner Bypass Modules can bypass systems Ethernet ports on a host system during three instances:
Just-on (Just-on is the brief moment when the internal power supply turns on and booting process
starts), system off, or upon software request (during run-time).
4.
Software programmable bypass or normal mode
5.
Software programmable timer interval:
- JUST-ON watchdog timer, used during JUST-ON, has timer setting of 5~1275 seconds of timer
interval.
- Run-Time watchdog timer, used during run-time, with of 1~255 seconds of timer interval.
6.
Multiple Watchdog Timers:
-Two for run-time: It is designed to give you a more variety of controls of the bypass on port basis.
By using dedicated watchdogs for different pairs of the bypass, you have the flexibility to manage the
bypass status for them differently.
-One for just-on: It is designed to give you the precise control of the bypass during this phase. You
can use this timer to delay enabling the bypass in just-on state.
Summary of Contents for NCA-4012
Page 1: ...1 NCA 4012 User Manual Version 1 0 Date of Release 2020 09 02 Network Appliance Platform ...
Page 12: ...12 Warranty Policy 78 RMA Service 78 RMA Service Request Form 79 ...
Page 21: ...21 TPM module pin header JTPM1 80 Debug port J80PORT1 ...
Page 22: ...22 SATA Connector JSATA1 2 mSATA connector JMSATA1 ...
Page 23: ...23 NM 4010IG401 I O board connector ...
Page 26: ...26 CPLD Flash pin header JCPLD1 ATX Power connector 24P ATX1 ATX Power connector 4P ATX2 ...
Page 27: ...27 CPU Fan FAN1 2 LCM module connector JLCM1 Power button SW1 Power pin header CONN2 ...
Page 28: ...28 SPI ROM flash pin header JSPIROM1 VGA pin header JVGA1 COM port pin header COMA1 ...
Page 29: ...29 IPMI connector JOPMA1 ...
Page 30: ...30 Main board bypass flash connector J7 PHY I2C debug pin header J11 ...
Page 51: ...51 NCT6776 Super IO Configuration ...
Page 55: ...55 NCT6776 HW Monitor ...
Page 63: ...63 Memory Configuration Memory Topology ...