Source traffic is sent to a VIP on an SLB device, which in turn is routed to the destination server. Return traffic is policy-based routed back to the SLB. Which SLB design has been implemented?

Question

Options

• Arouter mode
• Binline bridge mode
• Cone-armed mode
• Dtwo-armed mode

• A
  4% (2)
• B
  11% (6)
• C
  6% (3)
• D
  80% (43)

Explanation

This describes a Two-Armed Mode SLB design. In two-armed mode, the Server Load Balancer sits between two network segments - one facing clients and one facing servers - with two network 'arms' (interfaces). Inbound traffic arrives at the VIP and is forwarded by the SLB to a real server. Return traffic from the server must be steered back through the SLB (via PBR or default gateway configuration) so the SLB can maintain session state and translate addresses back. One-Armed mode (C) differs because the SLB has a single interface on the same subnet as the servers; servers often respond directly to clients (Direct Server Return) without PBR. Router mode (A) implies full routing through the device inline. Inline Bridge mode (B) means the SLB acts as a transparent Layer 2 bridge in the traffic path.

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