101 · Question #11
Which statement is true regarding failover.
The correct answer is B. Hardware failover can be used in conjunction with network failover.. F5 BIG-IP supports running hardware failover and network failover simultaneously, with each method providing complementary failover detection through different physical and logical channels.
Question
Which statement is true regarding failover.
Options
- AHardware failover is disabled by default.
- BHardware failover can be used in conjunction with network failover.
- CIf the hardware failover cable is disconnected, both BIG-IP devices will always assume the active
- DBy default, hardware failover detects voltage across the failover cable and monitors traffic across the
How the community answered
(27 responses)- B93% (25)
- C4% (1)
- D4% (1)
Why each option
F5 BIG-IP supports running hardware failover and network failover simultaneously, with each method providing complementary failover detection through different physical and logical channels.
Hardware failover is enabled by default on BIG-IP devices with the failover cable connected; it is not disabled by default.
F5 BIG-IP explicitly supports using hardware failover and network failover together in a DSC configuration. Hardware failover monitors voltage on a dedicated serial cable while network failover monitors network connectivity, and using both together increases the reliability and accuracy of failover detection.
Disconnecting the hardware failover cable does not automatically cause both devices to assume active status - network failover can still arbitrate active and standby roles if it is configured.
Hardware failover monitors voltage across the dedicated serial cable only, not traffic; monitoring traffic activity for HA decisions is performed by network failover, not hardware failover.
Concept tested: F5 BIG-IP hardware and network failover coexistence
Source: https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-device-service-clustering-administration-13-0-0/4.html
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