A903-RSP1A-55, Cisco ASR 903 Route Switch Processor, Base scale, 1 RSP, Route switch

  • Brand: Cisco
  • Model: A903-RSP1A-55
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List Price: €11,403.53
40% OFF
€6,841.26
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    • Original New · Covered SN
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    Overview
    End-of-Life Notice
    End-of-Life Notice
    A903-RSP1A-55 is officially EOL. Service support ends on 2022-10-31.
    For full lifecycle details, see A903-RSP1A-55 EOL.
    Recommended Replacement
    Recommended Replacement
    Official replacement model. Aligned with current deployment environments.

    Cisco A903-RSP1A-55 Overview

    The Cisco A903-RSP1A-55 is a carrier-grade route switch processor module for the ASR 903 aggregation platform, targeting metro Ethernet and service provider edge deployments. Delivering 55 Gbps interface throughput and 65 Mpps IPv4/IPv6 performance, it supports advanced MPLS VPN, VPLS, and EoMPLS services with extensive scale for MAC addresses, bridge domains, and QoS resources. With rich timing ports, flexible management interfaces, and compatibility with A900-IMA Ethernet, TDM, and ATM modules, the A903-RSP1A-55 provides a scalable, resilient control and forwarding engine for converged networks.

    Product Highlights

    55 Gbps
    Port Speed
    65 Mpps
    Packet Perf
    20,000
    IPv4 Scale

    Product Applications Scenarios

    Service Providers
    The A903-RSP1A-55 aggregates Ethernet, TDM, and ATM traffic with MPLS VPN and VPLS, helping carriers simplify metro backhaul and cut transport costs by up to 30% through higher port density and efficient QoS.
    Enterprise Network
    In large campus cores, the module delivers 55 Gbps throughput and 65 Mpps routing, enabling resilient L2/L3 VPNs and rich QoS to support voice, video, and critical applications with reduced downtime.
    Public Infrastructure
    Municipal or utility networks use its high MAC, VLAN, and MPLS label scale to segment services securely, improving traffic isolation and potentially lowering O&M overhead by more than 20% over legacy gear.

    Product Features Comparison

      Cisco A903-RSP1A-55 Cisco A903-RSP1B-55 Cisco ASR1000-RP1 Cisco ASR1000-RP2
    Model A903-RSP1A-55, Cisco ASR 903 Route Switch Processor, Base scale, 1 RSP, Route switch A903-RSP1B-55, Cisco ASR 903 Route Switch Processor, 1 Route Switch Processor/Large Scale ASR1000-RP1, Cisco ASR 1000 Router Processor, Dual-core CPU/4GB DRAM/1GB Flash ASR1000-RP2, Cisco ASR 1000 Router Processor, High Performance, Redundancy Supported, 2GB Memory
    Brand Cisco Cisco Cisco Cisco
    Module Type n/a n/a Route Processor Route Processor
    Port Configuration n/a n/a Ethernet 2
    Supported Speed Maximum interface throughput: 55 Gbps Maximum Interface Throughput: 55 Gbps Performance: Up to 2.5 Gbps Network Technology: 10/100/1000Base-T
    Compatible Platform Ethernet interface module compatibility: A900-IMA1X; A900-IMA8S; A900-IMA8T; TDM and ATM interface module compatibility: A900-IMA16D; A900-IMA4OS; A900-IMASER14A/S Ethernet Interface Module Compatibility: A900-IMA1X; A900-IMA8S; A900-IMA8T; TDM and ATM Interface Module Compatibility: A900-IMA16D; A900-IMA4OS; A900-IMASER14A/S Cisco ASR 1000 Series Cisco ASR1000 Series
    Installation Type n/a n/a Plug-in module n/a

    Optional Add-ons

    Model Number Description
    A900-IMA1X Cisco A900-IMA1X Gigabit Ethernet interface module for ASR 903 series, single-port uplink expansion.
    A900-IMA8S Cisco A900-IMA8S 8-port Gigabit Ethernet SFP interface module for ASR 903 metro aggregation.
    A900-IMA16D Cisco A900-IMA16D 16-port TDM interface module for ASR 903, enabling legacy voice and leased-line services.
    A900-IMASER14A/S Cisco A900-IMASER14A/S serial and ATM interface module for ASR 903, supporting mixed access scenarios.

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Cisco A903-RSP1A-55 Specification

    Model
    A903-RSP1A-55
    Brand
    Cisco
    Power consumption of chassis with 2 power supplies, 1 fan tray, and 1 RSP
    A903-RSP1A-55: 195 W
    RSP memory (DRAM)
    A903-RSP1A-55: 2 GB
    Flash memory (storage)
    2 GB
    Service scale
    A903-RSP1A-55: Base
    Ethernet interface module compatibility
    A900-IMA1X; A900-IMA8S; A900-IMA8T
    TDM and ATM interface module compatibility
    A900-IMA16D; A900-IMA4OS; A900-IMASER14A/S
    Maximum transmission unit (MTU)
    Configurable MTU up to 9216 bytes for bridging on Gigabit Ethernet, 10 and 100 Gigabit Ethernet
    Maximum interface throughput
    55 Gbps
    IPv4 performance
    65 Mpps
    IPv6 performance
    65 Mpps
    Management ports
    Copper 10/100/1000Base-T LAN management port (RJ45); Console/Aux RS-232 serial ports (RJ45); Console USB 2.0 Type-A receptacle
    Timing ports
    BITS simultaneous input and output (J1/T1/E1) – RJ48; 1 pps input – mini-coax; 1 pps output – mini-coax; 2.048/10 MHz input – mini-coax; 2.048/10 MHz output – mini-coax
    External USB flash memory
    Mass storage – USB 2.0 Type-A receptacle
    Shipment package size (L x W x H)
    14.38 x 14.38 x 6.25 in
    Shipment package weight
    6.2 lbs
    MTBF at 104 °F (40 °C) operating temperature
    300,000 hours
    MAC addresses (maximum)
    16,000
    Bridge domains (maximum)
    4,000
    Ethernet flow points (maximum)
    3,998
    L3 interfaces (maximum)
    256
    IPv4 routes (maximum)
    20,000
    IPv6 routes (maximum)
    6,000
    Multicast routes (maximum)
    1,000
    MPLS VPN (maximum)
    128
    MPLS labels (maximum)
    15,994
    EoMPLS tunnels per system (maximum)
    2,000
    VPLS instances (maximum)
    2,000
    Queues (maximum)
    4,000
    Classifications (maximum)
    5,000
    Ingress policers (maximum)
    2,000
    Class maps (maximum)
    1,000
    Queue counters (packet and byte)
    4,000
    Policer counters (packet and byte)
    6,000
    IPv4 ACL entries (maximum)
    1,500
    BFD sessions (maximum)
    511
    IEEE 802.1ag (CFM) at 3.3 ms interval
    256
    Weight
    kg

    Get more information

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    Quality Certifications

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    Q&A

    Questions & Answers

    How does the A903-RSP1A-55 compare to similar products?

    The A903-RSP1A-55 provides a balance of performance and cost-efficiency compared to higher-end models.

    What common troubleshooting steps are there for the A903-RSP1A-55?

    Common steps include checking power connections, verifying configurations, and updating firmware.

    Is the A903-RSP1A-55 suitable for large-scale deployments?

    Yes, it supports scalable solutions making it suitable for large-scale deployments.

    Is router-switch.com a reliable distributor?

    Absolutely. As a multi-brand authorized distributor, router-switch.com is directly certified by leading technology manufacturers. We guarantee 100% genuine products, competitive pricing, and full manufacturer warranties and support.

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