FortiADC
FortiADC enhances the scalability, performance, and security of your applications whether they are hosted on premises or in the cloud.
scheehan_FTNT
Article Id 198182

Description
This article describes link aggregate interface minimum link requirement in order to determine aggregated link status.

Link aggregation (also called NIC teaming/bonding or link bundling) forms a network interface that queues and transmits over multiple wires (also called a port channel), instead of only a single wire (as FortiADC would normally do with a single network interface per physical port).

This multiplies the bandwidth that is available to the network interface, and therefore is useful if FortiADC is deployed in line with your network backbone.

The figure below illustrates how physical ports are associated with physical and logical aggregated interfaces.



Solution
Note.
Minimum 2 physical active link requires to keep logical aggregate link as UP state.

Figure 01: 2 physical active link, logical aggregate link with 'UP' state.



 
 
Figure 02: 1 physical active link, logical aggregate link with 'Down' state.