Dynamic Load Balancer Mode in ACI

AB.

ACI (Application Centric Infrastructure) is a software-defined networking (SDN) architecture that centralizes management and control of the network infrastructure. ACI provides several load balancing options, including dynamic load balancing (DLB) mode, which adjusts traffic allocation based on congestion levels. The question asks which two statements about dynamic load balancer mode in ACI are true.

A. The aggressive DLB mode has a shorter flowlet timeout interval. This statement is true. Flowlet timeout refers to the maximum amount of time a packet can wait in the buffer before it is transmitted. Aggressive DLB mode has a shorter flowlet timeout interval, meaning packets are transmitted more quickly, which can lead to better performance.

B. DLB adjusts the traffic allocations according to congestion levels. This statement is true. In dynamic load balancing mode, the ACI fabric monitors congestion levels and dynamically adjusts traffic allocations to avoid congestion and improve network performance.

C. The default DLB mode is "conservative". This statement is false. The default DLB mode is "aggressive." In aggressive mode, the ACI fabric maximizes bandwidth utilization by allowing more flows to be transmitted simultaneously.

D. The aggressive mode flowlet timeout is a relatively higher value. This statement is false. As stated in statement A, the aggressive DLB mode has a shorter flowlet timeout interval, meaning packets are transmitted more quickly.

E. The aggressive DLB mode has a longer flowlet timeout interval. This statement is false. As stated in statement A, the aggressive DLB mode has a shorter flowlet timeout interval, meaning packets are transmitted more quickly.

In summary, the two true statements about dynamic load balancer mode in ACI are: A. The aggressive DLB mode has a shorter flowlet timeout interval. B. DLB adjusts the traffic allocations according to congestion levels.