MAC-Based Forwarding (MBF) on Citrix ADC serves what primary purpose?

MAC-Based Forwarding (MBF) on Citrix ADC serves what primary purpose?

• A. It uses DNS to map hosts
• B. It filters by VLAN
• C. It implements encryption of traffic
• D. It uses the source MAC address to forward replies to avoid ARP lookups

Answer: (D)

MAC-Based Forwarding uses the source MAC address of the incoming frame to determine where to send the reply, allowing the Citrix ADC to forward the response directly to the original sender without performing an ARP lookup. This reduces ARP traffic and speeds up delivery in Layer 2 forwarding scenarios, since the appliance can bypass the normal destination MAC resolution step. It’s not about DNS mapping, VLAN filtering, or encryption, which are separate functions. The key idea is to leverage the sender’s MAC to avoid ARP lookups and route replies efficiently.

MAC-Based Forwarding uses the source MAC address of the incoming frame to determine where to send the reply, allowing the Citrix ADC to forward the response directly to the original sender without performing an ARP lookup. This reduces ARP traffic and speeds up delivery in Layer 2 forwarding scenarios, since the appliance can bypass the normal destination MAC resolution step. It’s not about DNS mapping, VLAN filtering, or encryption, which are separate functions. The key idea is to leverage the sender’s MAC to avoid ARP lookups and route replies efficiently.