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by Cisco
Product Line: Cisco A903-RSP1A-55
Product Type: Router
Original price $276.00 - Original price $2,195.00
Original price
$276.00 - $2,195.00
Current price $2,195.00
Title: Surplus

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Product Description

The A903-RSP1A-55 Cisco router features a power consumption of 195 W, equipped with 2 GB DRAM and 2 GB storage flash memory, supporting a diverse range of Ethernet and TDM/ATM interface modules including A900-IMA1X, A900-IMA8S, A900-IMA8T, and A900-IMA16D, A900-IMA4OS, A900-IMASER14A/S. It delivers a maximum interface throughput of 55 Gbps, with IPv4 and IPv6 performance at 65 Mpps, and supports a configurable MTU of up to 9216 bytes. The device includes RJ45 and Type A receptacle connector ports for management, RJ-48 and mini-coax connector ports for timing, and operates within a temperature of 40 °C, ensuring reliability with a MTBF of 300,000 hours.

Key Feature for the A903-RSP1A-55

  • What is the power consumption of this networking hardware?
    The power consumption is 195 W.
  • Which type of memory is used in the RSP?
    The RSP utilizes DRAM memory.
  • How much RSP memory does the device have?
    The device is equipped with 2 GB of RSP memory.
  • What is the capacity of the storage flash memory?
    The storage flash memory has a capacity of 2 GB.
  • Can you list the Ethernet Interface Modules compatible with this device?
    Compatible Ethernet Interface Modules include A900-IMA1X, A900-IMA8S, A900-IMA8T.
  • What is the maximum Interface throughput supported?
    The maximum Interface throughput supported is 55 Gbps.
  • What are the IPv4 and IPv6 performance capabilities?
    Both IPv4 and IPv6 performance are rated at 65 Mpps.
  • What types of management ports are available on this device?
    The device features an RJ45 connector port and a Type A receptacle connector port for management.
  • What is the operating temperature range for this hardware?
    The operating temperature can go up to 40 °C.
  • How many MAC addresses does the device support?
    The device supports 16,000 MAC addresses.

Product Review

The Cisco A903-RSP1A-55 offers a maximum interface throughput of 55 Gbps and supports both IPv4 and IPv6 performance at 65 Mpps, positioning it as a suitable choice for high-speed data transmission needs. However, its power consumption of 195 W could be a drawback for operations aiming to minimize energy use. With a comprehensive range of Ethernet and TDM/ATM interface module compatibility, it provides flexibility in network design, though the limitation to 2 GB of DRAM and flash memory might restrict its performance in highly demanding environments.


The Cisco A903-RSP1A-55 is a network routing system processor designed for efficiency and high-performance networking. This processor is tailored for service providers and enterprises seeking scalable and reliable networking solutions. The hardware specifications of the Cisco A903-RSP1A-55 underline its capabilities in handling high-volume traffic while maintaining optimal performance. At the core of its specifications is the power consumption, rated at 195 W, ensuring that the processor delivers optimal performance without excessive energy use. The unit is equipped with 2 GB of DRAM for the Route Switch Processor (RSP) Memory and an additional 2 GB of storage flash memory. This combination provides a solid foundation for both operating system functionality and network service delivery, enabling the processor to efficiently manage and route network traffic. The Cisco A903-RSP1A-55 supports a range of Ethernet and TDM/ATM interface modules, making it versatile for various networking requirements. Compatible Ethernet Interface Modules include the A900-IMA1X, A900-IMA8S, and A900-IMA8T, while TDM and ATM Interface Module Compatibility spans the A900-IMA16D, A900-IMA4OS, and A900-IMASER14A/S. This compatibility ensures that the processor can be integrated into diverse network setups, supporting a wide array of networking standards and speeds. Key hardware specifications include: - A maximum Transmission Unit (MTU) configurable up to 9216 bytes, facilitating efficient bridging on Gigabit Ethernet as well as 10 and 100 Gigabit Ethernet. - A maximum interface throughput of 55 Gbps, indicating the processor's capability to handle substantial data flow across networks. - IPv4 and IPv6 performance both stand at 65 Mpps (Million packets per second), ensuring high-speed data processing for both protocols. Management and timing are facilitated through a variety of ports. The management ports include an RJ45 connector port and a Type A receptacle connector port, while timing ports feature an RJ-48 connector port and a mini-coax connector port. These ports ensure that network administrators have the necessary interfaces for network management and synchronization. The operating temperature is rated at 40 °C, with a Mean Time Between Failures (MTBF) of 300,000 hours, indicating a reliable and long-lasting operational life. The processor supports up to 16,000 MAC addresses, 4,000 bridge domains, and 3,998 ethernet flow points. Additionally, it can handle up to 1,000 multicast routes, emphasizing its capability in complex networking environments involving extensive data distribution and routing. For advanced network services, the Cisco A903-RSP1A-55 supports up to 128 MPLS VPNs, providing secure and scalable virtual network infrastructure. The processor is also equipped to manage up to 4,000 queues and 1,000 class maps, alongside 2,000 ingress policers, underscoring its ability to prioritize and manage network traffic efficiently. In summary, the Cisco A903-RSP1A-55 is engineered to meet the demands of modern network environments, offering a blend of high throughput, extensive compatibility with interface modules, and a comprehensive suite of features for traffic management and network services. Its specifications demonstrate its suitability for high-performance networking tasks, making it an ideal choice for service providers and enterprises looking for a reliable routing system processor.


Item Number and Maker Cisco A903-RSP1A-55
Energy Usage 195 W
Type of RSP Memory DRAM
RSP Memory Capacity 2 GB
On-board Storage Type Flash Memory 2 GB
Capability Level Base
Compatible with Ethernet Interface Modules A900-IMA1X, A900-IMA8S, A900-IMA8T
Compatible with TDM and ATM Interface Modules A900-IMA16D, A900-IMA4OS, A900-IMASER14A/S
Maximum Packet Size Up to 9216 Bytes for Ethernet Bridging, Including Gigabit and 10/100 Gigabit Ethernet
Peak Data Rate 55 Gbps
IPv4 Throughput 65 Million Packets per Second
IPv6 Throughput 65 Million Packets per Second
Administration Interfaces RJ45 and Type A USB Ports
Ports for Timing RJ-48 and Mini-Coaxial Ports
Max Operational Heat 40 °C
Expected Lifespan 300,000 Hours
MAC Address Support 16,000
Supported Bridge Domains 4,000
Defined Ethernet Flow Points 3,998
Supported Multicast Routes 1000
MPLS VPN Instances 128
Queue Support 4,000
Configurable Class Maps 1000
Rate Limiting Ingress Policers 2000

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