Technical data

Configuring and Operating the System
AXP 1410 Installation and Use (6806800H70D)
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5.7.1.1 Heartbeat
The shelf managers use two private interfaces to heartbeat each other. The heartbeat interval
is configured to 400 ms and the partner is considered inactive when no responses are received
after five retries within 2 seconds.
5.7.1.2 Data Replication
During redundant operation, the active shelf manager synchronizes the shelf FRU information
with the standby shelf manager every time it is modified (for example, shelf address shelf IP
address, shelf manager controlled activation, allowance for FRU activation readiness, FRU
activation order).
While the shelf manager is inserted, the active shelf manager synchronizes the shelf FRU
information with the newly inserted shelf manager.
The active shelf manager replicates HPI resource IDs on the standby shelf manager during
redundant operation and during shelf manager insertion.
5.7.1.3 HPI Interface
The HPI interface for the Redundancy Sensor and the Heartbeat Sensor is implemented as
described in the HPI-to-AdvancedTCA Mapping Specification.
The change of shelf address, shelf IP address and FRU activation order takes effect after a
reboot of the system, i.e. for the running software to start using the newly updated Shelf FRU
contents. Since this requires that both shelf managers are extracted and reinserted or the
system is power-cycled, only perform these kind of changes during the equipment set-up and
not in normal operation.
For the SAM1410, the power on sequence (FRU activation order) can be changed at runtime
using HPI controls defined by the HPI-to-AdvancedTCA Mapping Specification (FRU Power On
Sequence Control and FRU Power On Sequence Commit Control).