101 · Question #75
Which are immediate results of entering the following command: b pool PoolA . { lb method predictive member 10.10.1 .1:80 member 10.10.1.2:80 }
The correct answer is D. A new pool is available for association with any iRule or virtual server.. The bigpipe 'b pool' command immediately instantiates a named pool object in the active configuration, making it available for use without requiring a monitor or a virtual server.
Question
Which are immediate results of entering the following command:
b pool PoolA . { lb method predictive member 10.10.1 .1:80 member 10.10.1.2:80 }
Options
- ARequests sent to this BIG-IP system with a destination port of 80 are loadbalanced between the
- BNo changes will take place since the command is missing the monitor component for PoolA.
- CThe /config/BIG-IP.cinf file is updated to include a definition for the pool named PoolA.
- DA new pool is available for association with any iRule or virtual server.
How the community answered
(27 responses)- A15% (4)
- B4% (1)
- C7% (2)
- D74% (20)
Why each option
The bigpipe 'b pool' command immediately instantiates a named pool object in the active configuration, making it available for use without requiring a monitor or a virtual server.
Creating a pool does not by itself cause any traffic to be load balanced - an active virtual server must be configured and associated with the pool to accept incoming connections and direct them to its members.
Pool monitors are optional in BIG-IP configuration; omitting a monitor is valid and the pool will be created immediately, with members assumed to always be available since no health checking is performed.
The /config/bigip.conf file is not automatically updated when a bigpipe command runs; changes exist only in the running configuration until an administrator explicitly saves the configuration.
Executing the 'b pool PoolA' bigpipe command immediately creates the pool named PoolA with predictive load balancing across the two specified members in the running configuration. This pool is instantly available to be referenced by any iRule or assigned to any virtual server, with no additional steps required for it to become operational.
Concept tested: BIG-IP bigpipe pool creation and immediate availability
Source: https://techdocs.f5.com/en-us/bigip-17-1-0/big-ip-local-traffic-management-getting-started-guide/pools-and-pool-members.html
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