Which mode allows the NetScaler to forward packets that are not destined for IPs configured on the appliance?

• A. USIP
• B. Layer 3 Mode
• C. Layer 2 Mode
• D. MBF

Answer: (B)

Layer 3 mode turns the NetScaler into a router. It uses IP routing and the device’s routing table to forward packets between different networks. This means it can send traffic to destinations whose IPs aren’t configured on the appliance itself, as long as there is a route to those networks and a next hop defined. In contrast, Layer 2 mode behaves like a bridge, forwarding frames within the same local network based on MAC addresses and not routing to other subnets. MBF focuses on MAC-based forwarding in a bridging setup, not IP routing, and USIP is about preserving or using the source IP in certain forwarding scenarios rather than enabling routing to non-local destinations. So, Layer 3 mode is the mode that allows forwarding of packets not destined for IPs configured on the appliance.