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by Cisco
Product Line: Cisco ASR 1000 Series
Product Type: Router
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Product Description

The ASR1002X-20G-K9 is equipped with 6 SFP ports supporting 1G speeds, powered by a dual-core 2.13 GHz processor, and offers 3 SPA slots with integrated SIP slots, plus one ESP slot. It supports scalable bandwidth from 5G to 36G with upgrades available for 10G, 20G, or 36G, and comes with 4 GB DRAM and 8 GB flash memory, expandable with an external 4 GB USB flash. Designed for reliability, it features software redundancy, operates within a temperature range of 0 °C to 40 °C, and consumes 560 W (AC) or 590 W (DC) power.

FAQs for the ASR1002X-20G-K9

  • What is the maximum SFP port speed supported by the device?
  • The SFP ports on this device support speeds up to 1G.
  • How many SPA slots does the hardware feature?
  • It features 3 SPA slots.
  • Can the system bandwidth be upgraded?
  • Yes, the system bandwidth can be upgraded to 10G, 20G, or 36G.
  • What type of power supply does the device use?
  • The device uses either AC or DC power supply.
  • What is the operating temperature range for this device?
  • The operating temperature range is from 0 °C to 40 °C.
  • How much RAM is included with the device?
  • The device includes 4 GB DRAM.
  • Is front-to-back airflow supported?
  • Yes, the device supports front-to-back airflow.
  • What is the rack height for this device?
  • The rack height is 2 RU.
  • What minimum software is required to operate this device?
  • The minimum software required is Cisco IOS XE Software Release 3.7.0S.
  • How many SIP slots are integrated into the device?
  • It has integrated SIP slots.

Product Review

The Cisco ASR1002X-20G-K9 offers a scalable solution for network expansion, supporting bandwidth upgrades from 5G to 36G, which is beneficial for growing networks. However, its limited RAM and flash memory capacity could pose constraints for complex operations and future software upgrades. Additionally, the unit requires a minimum of Cisco IOS XE Software Release 3.7.0S, potentially necessitating updates for compatibility with existing network environments.


The Cisco ASR1002X-20G-K9 is a high-performance router designed for high-end applications requiring reliable connectivity and bandwidth scalability. This device is built to cater to the needs of growing businesses and service providers, ensuring efficient data transmission and network resilience. At the core of the Cisco ASR1002X-20G-K9 are its hardware specifications, starting with a dual-core processor clocked at 2.13 GHz. This processor is complemented by 4 GB of DRAM and 8 GB of flash memory, providing sufficient capacity for routing information and system operations. For external storage, there's an option for an additional 4 GB of USB flash memory, enhancing the router's flexibility in data management and software updates. The router offers six ports for connectivity, all of which are SFP (Small Form-factor Pluggable) type, supporting 1G speeds. This allows for versatile connections to a variety of network devices and services. The unit is also equipped with three SPA (Shared Port Adapter) slots, an integrated SIP (Session Initiation Protocol) slot, and one ESP (Embedded Services Processor) slot, enabling customization and expansion to meet specific networking requirements.
  • Rack Height: 2 RU, ensuring compactness and efficient use of space within standard 19-inch racks.
  • Scalability: The system's default bandwidth is 5G, with options to upgrade to 10G, 20G, or even 36G, accommodating growing network demands.
  • Redundancy: Supported through software, enhancing network reliability and uptime.
In terms of power, the Cisco ASR1002X-20G-K9 is designed to operate with either AC or DC power supplies, drawing 560 W in AC mode and 590 W in DC. This flexibility ensures that the router can be deployed in various environments without the need for additional power conversion equipment. The size of the device is 3.5 x 17.2 x 18.5 inches, making it a 2 RU (Rack Unit) high device, suitable for standard 19-inch rack mounting, optimizing space in data centers or networking closets. The system is designed to operate efficiently within a temperature range of 0 °C to 40 °C and can be stored in temperatures ranging from -40 °C to 70 °C. It can function optimally in relative humidity levels from 10% to 85%, ensuring reliability in various environmental conditions. The airflow from front-to-back supports efficient cooling, crucial for maintaining performance and longevity of the internal components. For software, the Cisco ASR1002X-20G-K9 requires a minimum of Cisco IOS XE Software Release 3.7.0S. This software foundation provides a robust platform for deploying advanced features and services, ensuring that the router can handle the demands of modern network environments. In summary, the Cisco ASR1002X-20G-K9 is a sophisticated router designed to meet the needs of businesses and service providers requiring high-speed connectivity and scalable bandwidth. With its powerful processor, ample memory, and flexible port configuration, it stands as a reliable solution for complex networking challenges.


Item Number Cisco ASR1002X-20G-K9
Manufacturer Cisco
Total Interface Count 6
Interface Type SFP
Speed per SFP Interface 1Gbps
CPU Configuration Dual-Core 2.13GHz
SPA Interface Slots 3
Integrated SIP Slots Yes
ESP Slot Quantity 1
Unit Height in Rack Units 2 RU
Compatibility with Rack Width 19 inches
Expandability Range 5 to 36 Gbps
Base System Throughput 5Gbps
Options for Bandwidth Expansion 10G, 20G, or 36Gbps
Redundancy Type Software
Memory 4GB DRAM
Internal Storage 8GB
Maximum External Storage via USB 4GB
Power Source Options AC/DC
Physical Dimensions 3.5 x 17.2 x 18.5 inches
Initial Firmware Version Cisco IOS XE Software Release 3.7.0S
Energy Consumption 560W (AC), 590W (DC)
Cooling Airflow Direction Front-to-Back
Operational Temperature Range 0°C to 40°C
Non-Operating Temperature Range -40°C to 70°C
Humidity Level during Operation 10% to 85%

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