Which mode is used to avoid asymmetrical packet flows and multiple route/ARP lookups?

Which mode is used to avoid asymmetrical packet flows and multiple route/ARP lookups?

• A. Layer 2
• B. Layer 3
• C. USNIP
• D. MBF

Answer: (D)

MBF mode is about making a single, stable forward path for a connection so that traffic in both directions follows the same route. When the gateway binds a client session to a particular egress path, the replies from the server return along that same path, which prevents asymmetric flows where client-to-server and server-to-client traffic take different routes. This eliminates extra route lookups and multiple ARP resolutions that can happen if the traffic can split across different interfaces or next-hops. The result is more predictable latency and reduced network overhead, especially in environments with multiple uplinks or complex routing. That’s why this mode is used to avoid asymmetrical packet flows and multiple route/ARP lookups.

MBF mode is about making a single, stable forward path for a connection so that traffic in both directions follows the same route. When the gateway binds a client session to a particular egress path, the replies from the server return along that same path, which prevents asymmetric flows where client-to-server and server-to-client traffic take different routes. This eliminates extra route lookups and multiple ARP resolutions that can happen if the traffic can split across different interfaces or next-hops. The result is more predictable latency and reduced network overhead, especially in environments with multiple uplinks or complex routing. That’s why this mode is used to avoid asymmetrical packet flows and multiple route/ARP lookups.