Which mode on the Citrix ADC can a Citrix Administrator utilize to avoid asymmetrical packet flows and multiple route/ARP lookups?

Which mode on the Citrix ADC can a Citrix Administrator utilize to avoid asymmetrical packet flows and multiple route/ARP lookups?

• A. MAC-based forwarding (MBF)
• B. Layer 2
• C. Layer 3
• D. Use Subnet IP (USNIP)

Answer: (A)

MAC-based forwarding keeps the data path at the layer 2 level by directing traffic to the real server using the server’s MAC address, so the Citrix ADC does not engage in IP routing or ARP lookups for the server path. This ensures that client packets and server responses travel along the same local path, eliminating asymmetrical flows and the need for multiple route/ARP lookups in the data path. In short, MBF preserves a straightforward L2 forwarding path to the chosen server, which is exactly what helps avoid those routing and ARP overheads.

MAC-based forwarding keeps the data path at the layer 2 level by directing traffic to the real server using the server’s MAC address, so the Citrix ADC does not engage in IP routing or ARP lookups for the server path. This ensures that client packets and server responses travel along the same local path, eliminating asymmetrical flows and the need for multiple route/ARP lookups in the data path. In short, MBF preserves a straightforward L2 forwarding path to the chosen server, which is exactly what helps avoid those routing and ARP overheads.