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5 Teaming(AFT/ALB/SFT) 65
E
5
Teaming(AFT/ALB/SFT)
This chapter explains Teaming (AFT/ALB/SFT).
5.1 Teaming(AFT/ALB/SFT)
AFT/ALB
Adapter Fault Tolerance (AFT) is a technology of redundant paths between the server and switch
(hub) using multiple Ethernet controllers (LAN adapters). If an error occurs in a switch port, cable, or
LAN port when the path is in use (Primary link)(*), the process is automatically switched to another
path (Secondary link) so that the transmission can be continued without disruption.
For AFT, all ports in a team must be connected to the same switch. Also, the switch spanning tree
function is required not to be activated (disabled).
Adaptive Load Balancing (ALB) is, in addition to the AFT redundant function, a technology to
improve transmission performance to split data from PRIMERGY server to two Ethernet controllers
(Data reception is performed only with Primary Link if [Advanced] - [Receive Load Balancing] is set
to [Disabled]).
• Configuration example of AFT/ALB
` In a system configuration containing a Switch Blade in the BX600 Server Blade, the
Adaptive Load Balancing (ALB) function is not available.
PRIMERGY Server
Ethernet controller
Primary link
Secondary link
Switch
Client
Client
Ethernet controller
To other LAN driver