Cisco Systems 9000 Manual De Usuario

The alarms can warn of:

Overtemperature condition on a component in the card cage

Fan failure in a fan tray

Overcurrent condition in a power supply

Out-of-tolerance voltage on one of the cards

Insertion count for an RSP card, RP, card, FC, or LC has reached a specified threshold. For more 
information on OIR insertion counts, see 

.

The alarm LEDs are controlled by the CAN microcontroller software, which sets the threshold levels for 
triggering the different stages of alarms.

The RSP/RP card continuously polls the system for temperature, voltage, current, and fan speed values. 
If a threshold value is exceeded, the RSP/RP sets the appropriate alarm severity level on the alarm card, 
which lights the corresponding LED, and energizes the appropriate alarm display relays to activate any 
external audible or visual alarms wired to the alarm display. The RSP/RP also logs a message about the 
threshold violation on the system console.

If one or more of the alarm LEDs is on, check the system console for messages describing the alarm.

You may need to troubleshoot the cooling subsystem if an overtemperature condition occurs. The 
cooling subsystem of the router consists of a fan tray in the chassis and a fan in each of the power 
supplies. The fan tray and the power supply fans circulate air to maintain acceptable operating 
temperatures within the router. 

When troubleshooting the fan trays, never unplug all the fan trays at the same time.

The Cisco ASR 9000 Series supports version 1 and version 2 fan trays. Version 2 high-speed fans provide 
additional cooling for new generation line cards that draw more power and generate more heat. 

lists the chassis cooling requirements for these cards.