Advantech DNS-3200 user manual Swap Fault Tolerance SFT, Adaptive Load Balancing ALB

Swap Fault Tolerance (SFT)

Function: SFT provides automated residue to the network interface card as a fault tolerance. With the two network ports connected to different switches, one is the primary network for normal team and the other is the backup and is usually not in the “On” state. If the primary online develops problems, the backup network will start and take over the team.

Network configuration:

1.Each network port must be connected to a different network switch.

2.The switch must have the Spanning Tree Protocol (STP) in “On” state.

Adaptive Load Balancing (ALB)

Function: ALB provides load balancing and fault tolerance to the net- work flow and uses the software to analyze the transmission load on each interface card. For the two network ports sharing the load balancing of the transmission load and received flow load balancing of the IP protocol, if one team develops problems, the other team will take over the task.

Network configuration:

1.The network ports must be connected to the same network switch.

2.All switches must be able to support ALB.

Note: ALB does not balance non-routable communica- tion protocols, such as NetBEUI and some other IPX* flows.

37 Chapter3