201 · Question #343
Which statement is true concerning SNATs using automap?
The correct answer is C. A SNAT using automap will preferentially use a floating self-IP over a nonfloating self-IP.. This question tests the specific IP address selection logic employed by SNAT Automap when translating source addresses.
Question
Which statement is true concerning SNATs using automap?
Options
- AOnly specified self-IP addresses are used as automap addresses.
- BSNATs using automap will translate all client addresses to an automap address.
- CA SNAT using automap will preferentially use a floating self-IP over a nonfloating self-IP.
- DA SNAT using automap can be used to translate the source address of all outgoing traffic to the
How the community answered
(26 responses)- B4% (1)
- C92% (24)
- D4% (1)
Why each option
This question tests the specific IP address selection logic employed by SNAT Automap when translating source addresses.
SNAT Automap automatically selects a self-IP from the egress VLAN; it does not require explicitly specified self-IPs for its operation, which is characteristic of a SNAT pool.
SNATs using automap only translate traffic associated with the virtual server on which automap is enabled, not all client addresses across the entire BIG-IP system.
When SNAT Automap is enabled, the BIG-IP system prioritizes using a floating self-IP address on the egress VLAN for source translation. If no floating self-IP is available, it then falls back to a non-floating self-IP on that same egress VLAN.
SNAT Automap applies to traffic processed by its associated virtual server, not necessarily 'all outgoing traffic' from the BIG-IP system, as other traffic may not undergo SNAT.
Concept tested: SNAT Automap self-IP selection logic
Source: https://techdocs.f5.com/kb/en-us/solutions/public/7000/300/sol7336.html
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