Cyclades AlterPath Manager 2500, Инструкция по установке, настройке и эксплуатации

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Redundant (Fault Tolerant) Configuration
244 APM Installation, Configuration, and User’s Guide
Note: Most of the fields in the APM Heartbeat forms for the primary APM
and for the redundant APM must be filled in identically. Figure 4-84 and
Figure 4-85 show which fields differ and how they differ when comparing the
APM Heartbeat form for the primary APM to the APM Heartbeat form for the
secondary APM.
Table 4-44: Definitions Used in Fault Tolerant APMs
Term Definition
Primary system The primary system is the system that runs under
normal conditions. Ideally, this is always the case.
Redundant system The redundant system is the system that takes over if
the primary system fails or the heartbeat signal is
interrupted.
Current system The current system is the primary system when you
are configuring the primary system. It is the
redundant system when you are configuring the
redundant system.
Mated system The mated system is the redundant system when you
are configuring the primary system. It is the primary
system when you are configuring the remote system.
Table 4-45: Heartbeat Form Fields and Meanings
Element Meaning and Configuration
Fail Over Time Time in seconds before a missing heartbeat signal is
recognized as a failure of the primary APM (default: 5
seconds).
Message-Period Time in seconds for a heartbeat signal to be sent and
acknowledged (default: 1 second).
Dead-Ping Time
Out Time in seconds for an APM to consider a ping to have
failed (default: 5 seconds).