United States
Q
Which power supply models are compatible with the Cisco ASR 9000 series routers?
A
The Cisco ASR 9000 supports PWR-2KW-DC, PWR-4KW-DC and PWR-4KW-AC power modules. These hot-swappable PSUs are fully backward-compatible across all ASR 9000 chassis.
Q
How many power supplies can I install in an ASR 9000 chassis?
A
An ASR 9000 chassis accommodates up to four power supply units. You can configure them in 1+1 or N+1 redundancy for maximum availability.
Q
Are ASR 9000 power supplies hot-swappable?
A
Yes. All ASR 9000 power modules are hot-swappable, enabling removal and replacement without shutting down the router or impacting traffic.
Q
What input voltage ranges do ASR 9000 power supplies support?
A
AC PSUs accept 100–240 VAC at 50/60 Hz. DC PSUs accept –48 to –60 VDC. Both types auto-sense and adapt to nominal voltage ranges.
Q
Can I mix AC and DC power supplies in the same chassis?
A
No. ASR 9000 chassis require all power modules to be of the same type—either all AC or all DC—to ensure proper power distribution.
Q
How do I verify the status of my ASR 9000 power supplies?
A
Check the front-panel LEDs: green indicates normal operation, amber signals a fault. You can also run the CLI command “show platform power” for detailed status.
Q
What is the typical power consumption of an ASR 9000 router?
A
A fully populated ASR 9000 system with PWR-4KW modules consumes up to 3,500 W under peak load. Actual consumption varies with line-card count and traffic.
Q
How do I replace a faulty ASR 9000 power supply?
A
Disengage the PSU latch, slide out the faulty unit, insert the replacement module until it clicks, and confirm a green LED. Consult the Cisco installation guide for details.
Q
What redundancy options are available for ASR 9000 power supplies?
A
You can configure 1+1, 2+1 or N+1 redundancy. Redundant PSUs ensure uninterrupted operation during module failure or maintenance activities.
Q
What are the operating temperature requirements for ASR 9000 PSUs?
A
Operate in an ambient range of 0 °C to 40 °C with adequate front-to-back airflow. Regularly clean air filters to prevent overheating.
Q
What warranty covers ASR 9000 power supplies?
A
Cisco provides a one-year limited hardware warranty for ASR 9000 PSUs. You can extend coverage through Cisco Smart Net Total Care services.
Q
Can I use third-party power supplies in the ASR 9000?
A
Cisco strongly recommends using only genuine Cisco PSUs to ensure compatibility, maintain support eligibility and preserve warranty coverage.
Q
How do I check the firmware version of an ASR 9000 power supply?
A
Run the CLI command “show platform hardware chassis power-supply slot <n>” to view firmware and hardware details. Update firmware via Cisco software images if required.
Q
What safety certifications do ASR 9000 PSUs carry?
A
ASR 9000 power modules hold CE, UL, CSA and CB certifications, ensuring compliance with global safety, EMC and environmental standards.
Q
Can I upgrade from a 2 kW PSU to a 4 kW PSU in my ASR 9000?
A
Yes. You can replace PWR-2KW modules with PWR-4KW units to increase capacity. Verify that your power infrastructure supports the higher load.
Q
How do ASR 9000 power supplies handle power faults?
A
Integrated protections include overcurrent, overvoltage and thermal shutdown. Fault conditions trigger amber LEDs, generate syslog messages and allow rapid CLI-based diagnostics.
