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101 · Question #46

Which IP address will the client address be changed to when SNAT automap is specified within a Virtual Server configuration.

The correct answer is A. The floating self IP address on the VLAN where the packet leaves the system.. SNAT automap translates the client source address to the floating self IP on the egress VLAN, ensuring proper return traffic routing in HA configurations.

Section 2: F5 Solutions and Technology

Question

Which IP address will the client address be changed to when SNAT automap is specified within a Virtual Server configuration.

Options

  • AThe floating self IP address on the VLAN where the packet leaves the system.
  • BThe floating self IP address on the VLAN where the packet arrives on the system.
  • CIt will alternate between the floating and nonfloating self IP address on the VLAN where the
  • DIt will alternate between the floating and nonfloating self IP address on the VLAN where the

How the community answered

(35 responses)
  • A
    89% (31)
  • B
    3% (1)
  • C
    6% (2)
  • D
    3% (1)

Why each option

SNAT automap translates the client source address to the floating self IP on the egress VLAN, ensuring proper return traffic routing in HA configurations.

AThe floating self IP address on the VLAN where the packet leaves the system.Correct

SNAT automap selects the floating self IP on the VLAN through which the translated packet exits toward the pool member (the egress VLAN). Using the floating IP rather than the non-floating self IP ensures that return traffic is routed correctly regardless of which unit is active in a high-availability pair.

BThe floating self IP address on the VLAN where the packet arrives on the system.

Automap does not use the ingress VLAN's floating self IP - it always uses the floating self IP on the outbound (egress) VLAN where the packet leaves toward the server.

CIt will alternate between the floating and nonfloating self IP address on the VLAN where the

SNAT automap does not alternate between floating and non-floating self IPs; it consistently selects only the floating self IP to maintain HA stability.

DIt will alternate between the floating and nonfloating self IP address on the VLAN where the

SNAT automap does not alternate between addresses, and it uses the egress VLAN, not the ingress VLAN where the client packet arrived.

Concept tested: F5 BIG-IP SNAT automap egress VLAN self IP selection

Source: https://support.f5.com/csp/article/K7820

Topics

#SNAT automap#floating self-IP#egress VLAN#source address translation

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