201 · Question #50
Which statement is true concerning the default communication between a redundant pair of BIG IP devices.
The correct answer is B. Data for both connection and persistence mirroring are shared through the same TCP connection.. In a redundant BIG-IP pair, connection and persistence mirroring data are efficiently shared between devices over a single TCP connection, optimizing inter-device communication. This ensures that session state is consistently maintained across both units for seamless failover.
Question
Which statement is true concerning the default communication between a redundant pair of BIG IP devices.
Options
- ACommunication between the systems cannot be effected by port lockdown settings.
- BData for both connection and persistence mirroring are shared through the same TCP connection.
- CRegardless of the configuration, some data is communicated between the systems at regular intervals.
- DConnection mirroring data is shared through the serial fail over cable unless network failover is enabled.
How the community answered
(36 responses)- A3% (1)
- B89% (32)
- C3% (1)
- D6% (2)
Why each option
In a redundant BIG-IP pair, connection and persistence mirroring data are efficiently shared between devices over a single TCP connection, optimizing inter-device communication. This ensures that session state is consistently maintained across both units for seamless failover.
Port lockdown settings directly control which services and ports are accessible on self-IPs, and thus absolutely can affect communication between BIG-IP systems, including mirroring and failover.
BIG-IP redundant pairs utilize a single TCP connection for efficiently sharing both connection mirroring data (for active sessions) and persistence mirroring data (for maintaining client-side persistence records). This consolidated approach streamlines the communication required to maintain synchronized session states across the high-availability pair.
While failover heartbeats and certain state updates occur regularly, the statement "regardless of the configuration" is too broad; if mirroring is disabled or network connectivity is completely down, crucial data communication stops.
Connection mirroring data is primarily shared over the network through the configured mirroring channels, not through the legacy serial failover cable, which is generally used for basic hardwired failover signals.
Concept tested: BIG-IP redundant pair communication and mirroring
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