High Availability Subsystem - Cisco ASR 5500 Administration Manual

StarOS Tasks

High Availability Subsystem

Table 43: High Availability Subsystem Tasks
Task
hatcpu
hatsystem
Description Function
High Availability Task Performs device initialization and control functions based on
CPU the CPUs hardware capabilities.
Reports the loss of any task on its CPU to hatsystem
sub-function.
Controls the LEDs on the packet processing cards.
Initializes and monitors the dedicated hardware on packet
processing cards. (ASR 5x00 only)
Collects CPU monitoring information periodically and reports
to the master hatcpu sub-function.
Reports the loss of any task on its CPU to the master hatcpu
sub-function.
Performs device initialization and control functions because
of the CPU's hardware capabilities.
Reports the loss of any task on its CPU to hatsystem
sub-function.
Controls the LEDs on the management card. (ASR 5x00 only)
Initializes and monitors the dedicated hardware on the
management card. (ASR 5x00 only)
High Availability Task Controls all the HAT sub-function tasks in the system. It is
System Controller initiated on system start-up.
Initializes system components (such as the Gigabit Ethernet
switches and switch fabric).
Monitors system components such as fans for state changes.
Triggers actions for redundancy in the event of fault detection.
The HAT subsystem on the redundant management card
mirrors the HAT subsystem on the active management card.
ASR 5500 System Administration Guide, StarOS Release 19
High Availability Subsystem
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