High Availability Subsystem - Cisco ASR 5000 Series Administration Manual

StarOS Tasks

High Availability Subsystem

Table 47: High Availability Subsystem Tasks
Task Description
hatcpu High Availability Task CPU
hatsystem High Availability Task System
Controller
Function
Performs device initialization and control functions based on 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 5500 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 5500 only)
Initializes and monitors the dedicated hardware on the management card.
(ASR 5500 only)
Controls all the HAT sub-function tasks in the system. It is 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 21.4
High Availability Subsystem
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