Question 1

Which power supply models are compatible with the Cisco ASR 9000 series routers?

Accepted Answer

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.

Question 2

How many power supplies can I install in an ASR 9000 chassis?

Accepted Answer

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.

Question 3

Are ASR 9000 power supplies hot-swappable?

Accepted Answer

Yes. All ASR 9000 power modules are hot-swappable, enabling removal and replacement without shutting down the router or impacting traffic.

Question 4

What input voltage ranges do ASR 9000 power supplies support?

Accepted Answer

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.

Question 5

Can I mix AC and DC power supplies in the same chassis?

Accepted Answer

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.

Question 6

How do I verify the status of my ASR 9000 power supplies?

Accepted Answer

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.

Question 7

What is the typical power consumption of an ASR 9000 router?

Accepted Answer

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.

Question 8

How do I replace a faulty ASR 9000 power supply?

Accepted Answer

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.

Question 9

What redundancy options are available for ASR 9000 power supplies?

Accepted Answer

You can configure 1+1, 2+1 or N+1 redundancy. Redundant PSUs ensure uninterrupted operation during module failure or maintenance activities.

Question 10

What are the operating temperature requirements for ASR 9000 PSUs?

Accepted Answer

Operate in an ambient range of 0 °C to 40 °C with adequate front-to-back airflow. Regularly clean air filters to prevent overheating.

Question 11

What warranty covers ASR 9000 power supplies?

Accepted Answer

Cisco provides a one-year limited hardware warranty for ASR 9000 PSUs. You can extend coverage through Cisco Smart Net Total Care services.

Question 12

Can I use third-party power supplies in the ASR 9000?

Accepted Answer

Cisco strongly recommends using only genuine Cisco PSUs to ensure compatibility, maintain support eligibility and preserve warranty coverage.

Question 13

How do I check the firmware version of an ASR 9000 power supply?

Accepted Answer

Run the CLI command “show platform hardware chassis power-supply slot ” to view firmware and hardware details. Update firmware via Cisco software images if required.

Question 14

What safety certifications do ASR 9000 PSUs carry?

Accepted Answer

ASR 9000 power modules hold CE, UL, CSA and CB certifications, ensuring compliance with global safety, EMC and environmental standards.

Question 15

Can I upgrade from a 2 kW PSU to a 4 kW PSU in my ASR 9000?

Accepted Answer

Yes. You can replace PWR-2KW modules with PWR-4KW units to increase capacity. Verify that your power infrastructure supports the higher load.

Question 16

How do ASR 9000 power supplies handle power faults?

Accepted Answer

Integrated protections include overcurrent, overvoltage and thermal shutdown. Fault conditions trigger amber LEDs, generate syslog messages and allow rapid CLI-based diagnostics.

Power Supplies Router ASR 9000

A9K-3KW-AC (Cisco ASR 9000 Equipment A9K-3KW-AC 3kW AC Power Module)

A9K-2KW-DC (2KW DC POWER MODULE)

A9K-1.5KW-DC (Cisco ASR 9000 Equipment A9K-1.5KW-DC 1.5kW DC Power Module)

CAB-7513ACI (Cisco ASR 9000 Accessory CAB-7513ACI AC POWER CORD (ITALY))

CAB-7513ACSA (Cisco ASR 9000 Accessory CAB-7513ACSA AC Power Cord (South Africa) Spar)

CAB-AC-2500W-EU (Cisco ASR 9000 Accessory CAB-AC-2500W-EU Power Cord, 250Vac 16A, Europe)

CAB-AC-2500W-US1 (Cisco ASR 9000 Accessory CAB-AC-2500W-US1 Power Cord, 250Vac 16A, straight blade NEMA 6-20 plug, US)

CAB-AC-C6K-TWLK (Cisco ASR 9000 Accessory CAB-AC-C6K-TWLK Power Cord, 250Vac 16A, twist lock NEMA L6-20 plug, US)

Questions & Answers

Which power supply models are compatible with the Cisco ASR 9000 series routers?

How many power supplies can I install in an ASR 9000 chassis?

Are ASR 9000 power supplies hot-swappable?

What input voltage ranges do ASR 9000 power supplies support?