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by Cisco
Product Line: Cisco ASR 9000 Series
Product Type: Aggregation Services Router
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Product Description

The ASR-9904-AC is designed with horizontal slot orientation, supporting two redundant RSPs with integrated fabrics and two line-card slots, within a chassis measuring 10.38 x 17.57 x 25.02 inches and weighing 62 lbs. It is equipped with a 3 kW power module, operates on 200-240 V; 50-60 Hz; 16 A maximum input power, and features N+N redundancy for enhanced reliability. This model ensures efficient cooling with one fan tray containing 12 fans, supports right-to-left, front-to-back airflow with baffle, and runs Cisco IOS XR software, adhering to multiple safety and environmental standards, including NEBS Level 3, UL/CSA/IEC/EN 60950-1, and IEC/EN 60825 Laser Safety.

FAQs for the ASR-9904-AC

  • What are the dimensions of the networking hardware?
    The dimensions are 10.38 x 17.57 x 25.02 inches (H x W x D).
  • How many RSPs does the device support?
    It supports two redundant RSPs with integrated fabrics.
  • What is the weight of the device including V2 PEM and chassis?
    The weight is 62 lbs.
  • Can the device be mounted in a 19-inch rack?
    Yes, it is designed for 19-inch rack mounting.
  • What type of power module is used in the device?
    The device uses a 3 kW power module.
  • What is the airflow direction for cooling?
    Airflow is from right-to-left, front-to-back with a baffle.
  • What are the operating temperature limits?
    The operating temperature range is from 5 °C to 40 °C.
  • What is the maximum operating relative humidity supported?
    The device supports up to 90% non-condensing relative humidity.
  • What safety specifications does the device meet?
    It meets UL/CSA/IEC/EN 60950-1, IEC/EN 60825 Laser Safety, ACA TS001, AS/NZS 60950, and FDA Code of Federal Regulations Laser Safety.
  • Which software does the device run?
    The device runs Cisco IOS XR software.

Product Review

The Cisco ASR-9904-AC provides high availability with its two redundant RSPs and integrated fabrics, ensuring network reliability. Despite its compact size of 10.38 x 17.57 x 25.02 inches and a weight of 62 lbs, which facilitates easy integration into existing infrastructure, the system is limited by having only two line-card slots, which may restrict expandability. It supports a wide range of environmental conditions and adheres to numerous safety and operational standards, making it a versatile choice for various networking environments.


The Cisco ASR-9904-AC is a compact, high-capacity router designed to support the requirements of high-end carrier and enterprise applications. This device features a horizontal slot orientation, with dimensions of 10.38 inches in height, 17.57 inches in width, and 25.02 inches in depth, fitting comfortably into a 19-inch rack mount setup. It weighs 62 lbs when equipped with V2 Power Entry Modules (PEMs) and chassis, indicating its solid build and durability. This router is engineered to provide high availability and performance with its two redundant Route Switch Processors (RSPs) that include integrated fabrics. This design ensures seamless operation and service continuity. The ASR-9904-AC also offers two line-card slots, enabling scalability and flexibility in network design to cater to varying bandwidth and service demands. Powering the Cisco ASR-9904-AC is a 3 kW power module that supports N+N redundancy, ensuring the system remains operational even in the event of a power module failure. It operates efficiently within a wide range of input power (200-240 V; 50-60 Hz; 16 A Maximum) and is designed to maintain its performance in varied environmental conditions: - Minimum operating temperature: 5 °C - Maximum operating temperature: 40 °C - Operating relative humidity range: 5% to 90% (non-condensing) For cooling, the system utilizes a single fan tray with 12 fans, supporting an airflow pattern from right-to-left and front-to-back when used with a baffle. This efficient thermal management system ensures the router operates within its temperature thresholds for reliability and longevity. The ASR-9904-AC is built to withstand a broad range of storage conditions, from -40 °C to 70 °C in temperature and 5% to 93% in relative humidity, without condensing. It's also capable of operating at altitudes from -60 to 4000 meters, making it suitable for deployment in diverse geographic locations. Compliance with multiple standards and specifications underscores the router's reliability and safety. These include NEBS Level 3 compliance for physical protection and EMC, as well as safety specifications like UL/CSA/IEC/EN 60950-1. Additionally, the device meets specific requirements for laser safety and has been approved for use in various international markets. Running on Cisco IOS XR software, the ASR-9904-AC offers a comprehensive suite of advanced features designed for network efficiency, security, and scalability. This versatile operating system supports a broad range of protocols and technologies, facilitating the deployment of both existing and future networking solutions. Key hardware specifications include: -
  • Two redundant RSPs with integrated fabrics for high availability
  • Two line-card slots, providing scalability and flexibility
  • 3 kW power module with N+N redundancy, ensuring continuous operation
In summary, the Cisco ASR-9904-AC is a powerful and reliable solution for organizations seeking to build or upgrade their network infrastructure. Its compact size, combined with its high-performance capabilities and redundancy features, makes it an ideal choice for demanding networking environments.


Part Number and ManufacturerCisco ASR-9904-AC
Orientation of SlotsHorizontal
Dimensions (Height x Width x Depth)10.38 x 17.57 x 25.02 inches
Mass62 pounds (including V2 Power Entry Module and chassis)
Route Switch Processor QuantityTwo, with built-in fabrics, offering redundancy
Line-Card Slots AvailabilityTwo
Compatibility with 19-Inch RacksYes
Possibility for Cabinet InstallationYes
Cooling MechanismSingle fan tray containing 12 fans
Power Supply Unit3 kW capacity
Redundancy ModelN+N
Power Input Requirements200-240 V; 50-60 Hz; up to 16 A
Cooling Airflow DirectionFrom right to left, front to back, facilitated by a baffle
Lowest Operating Temperature5 °C
Highest Operating Temperature40 °C
Lowest Operating Humidity5% (non-condensing)
Highest Operating Humidity90% (non-condensing)
Lowest Storage Temperature-40 °C
Highest Storage Temperature70 °C
Lowest Storage Humidity5%
Highest Storage Humidity93%
Operational Altitude Range-60 to 4000 meters
Compliance with StandardsSR-3580, GR-1089-CORE, GR-63-CORE, VZ.TPR.9205 for NEBS; UL/CSA/IEC/EN 60950-1, IEC/EN 60825, ACA TS001, AS/NZS 60950 for safety; FDA regulations for laser safety
Software PlatformCisco IOS XR

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