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A903-RSP1A-55
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ASR 903 Route Switch Processor 1, Base Scale
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Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
A903-RSP1A-55
- Description:
- ASR 903 Route Switch Processor 1, Base Scale
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658481901
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$13,200.00
- Price:
$6,376.0051.7% off
Quantity:
1
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A903-RSP1A-55 Overview
A903-RSP1A-55 is a high-performance modular enterprise router built with a robust architecture designed to support critical network infrastructures. It offers flexible power options with redundant AC power supply capabilities, multiple WAN/LAN interfaces for diverse connectivity, and integrated services including voice and video that ensure business continuity across varied environments.
A903-RSP1A-55 features extensive modular capabilities, advanced VPN support for secure remote access, and high throughput performance rated at up to 10 Gbps while delivering built-in firewall protection and QoS features for optimized data flow. With its redundant design and superior performance, this router is ideally suited for enterprise and business use cases in mission-critical networks.
A903-RSP1A-55 price is $6,376.00, a 51.7% saving from the Cisco list price of $13,200.00. A903-RSP1A-55 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for A903-RSP1A-55 for additional pricing. Browse the full Cisco Router Asr 900 series or explore all Cisco products.
A903-RSP1A-55 Specifications
- Product Type
- Enterprise Router
- Brand
- Cisco
- VPN Support
- IPSec / SSL VPN / DMVPN
- Power Source
- AC Power Supply / Redundant
- Routing Protocols
- OSPF / BGP / EIGRP / Static Routing
- Broadband
- Fiber Optic / DSL
- Architecture
- Modular
- WAN Configuration
- Dual WAN
- WAN Ports
- 2 WAN
- LAN Ports
- 4 LAN Ports
- Ethernet Technology
- 10/100/1000
- Connectivity Type
- Wired
- Network Protocols
- IPv4, IPv6
- Remote Management
- Telnet, SSH, SNMP
- Compliance Standards
- FCC, CE, RoHS
- Wireless Support
- No
- Speed/Capacity
- Gigabit
- Firewall Features
- Yes
- Features
- VPN / IPv6 Compatible / Firewall
- Use Case
- Enterprise / Business
- Management
- Managed
- Form Factor
- Rack-mount
- Integrated Services
- Voice / Video
- High Availability Support
- Supported
- Throughput Capacity
- 10 Gbps
- QoS Features
- Supported
- Built-in Security Features
- Firewall / Intrusion Prevention
- Expansion Slots
- NIM / SFP+
- Modular Slots Available
- 3+ Slots
- Stacking Capability
- Yes
- 5G Support
- No
- Memory
- 4 GB
- Flash Memory
- 512 MB
- Interface Ports
- RJ-45 / SFP
- Power
- 350 Watt
- Device Type
- Router
- Product Name
- A903-RSP1A-55
- Height
- 2 inches
- Width
- 17 inches
- Depth
- 18 inches
- Weight
- 8 lbs
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Product Comparison Table 
| A903-RSP1A-55 |  A901-6CZ-F-D |  A901-6CZ-F-A |  A900-IMA8T |  A901-4C-FT-D | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Modular | Fixed |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention |
| Compliance Standards | FCC, CE, RoHS | FCC, CE | CE / FCC | FCC, CE, RoHS | FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 18 inches | 18 inches | 18 inches | 16 inches | 16 inches |
| Device Type | Router | Router | Router | Router | Router |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | NIM / SFP+ | NIM | NIM / SFP+ | NIM / SFP+ | SFP+ |
| Features | VPN / IPv6 Compatible / Firewall | VPN, IPv6 Compatible, Firewall | VPN / IPv6 Compatible / Firewall | VPN, IPv6 Compatible, Firewall, MPLS, Syslog | VPN, Firewall, Redundancy, High Availability |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 512 MB | 1 GB | 512 MB | 512 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 2 inches | 1.75 inches | 2 inches | 4 inches | 1.75 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video | Voice, WAN Optimization | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice, Video |
| Interface Ports | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP+ | RJ-45, SFP | RJ-45, SFP |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 8 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB | 2 GB |
| Network Protocols | IPv4, IPv6 | IPv4, IPv6 | IPv4 / IPv6 | IPv4, IPv6, MPLS | IPv4, IPv6 |
| Power | 350 Watt | 200W | 350 Watt | 150W | 150W |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / DC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | A903-RSP1A-55 | A901-6CZ-F-D Enterprise Router | A901-6CZ-F-A Enterprise Modular Router | A900-IMA8T Enterprise Modular Router | A901-4C-FT-D |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet, SSH, SNMP | SSH, Telnet, SNMP | SNMP / SSH / Telnet | SSH, HTTPS, SNMP | HTTPS, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / Static Routing |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | Yes | Yes | Yes | No |
| Throughput Capacity | 10 Gbps | 1 Gbps | 20 Gbps | 10Gbps | 1 Gbps |
| Use Case | Enterprise / Business | Enterprise | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / GRE / DMVPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN / GRE / DMVPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 8 lbs | 25 lbs | 15 lbs | 15 lbs | 15 lbs |
| Width | 17 inches | 17 inches | 19 inches | 17 inches | 17 inches |
| Wireless Support | No | No | No | No | No |
Compliance & Coverage
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
B
Barry Allen
5
The Base Scale RSP1A is a reliable core for our ASR 903. It provides steady performance for our standard routing and switching needs.
I
Iris West
5
Solid and dependable processor. It offers great value for sites that don't require large-scale tables. Performance has been flawlessly consistent since installation.
C
Cisco Ramon
5
Perfect for mid-sized deployments. The RSP1A-55 is easy to configure and provides stable management for our aggregation chassis. Very satisfied with its reliability.
C
Caitlin Snow
4
A robust and efficient switching processor. It handles our traffic loads perfectly without any latency. A very dependable part of our network fleet.
J
Joe West
4
Professional grade reliability. The base scale RSP is a workhorse for our daily operations. It delivers consistent performance and has required no maintenance.
Questions & Answers
What is the Cisco ASR 903 RSP1A-55?
The Cisco ASR 903 RSP1A-55 is a Route Switch Processor module for ASR 903 Series routers, providing high-performance forwarding, control-plane functions, and advanced edge routing capabilities.
What key features does the ASR 903 RSP1A-55 provide?
It delivers up to 20 Gbps forwarding capacity, support for IOS XE, rich MPLS/VPN services, hardware-based QoS, and in-service software upgrades for continuous operation.
What forwarding performance can I expect from RSP1A-55?
The RSP1A-55 supports up to 20 Gbps of aggregate throughput with hardware-accelerated packet processing and deep route table scalability to millions of routes.
How scalable is the Route Switch Processor 1, Base Scale?
It scales to over 4 million IPv4/IPv6 routes, 1.5 million MAC address entries, and supports up to 1,024 virtual routing and forwarding (VRF) instances.
Which interface modules are compatible with RSP1A-55?
The processor supports all ASR 903 line cards, including 1G/10G SFP+, 25G SFP28, and 100G QSFP28 modules, enabling flexible port density and media options.
Is the RSP1A-55 compatible with Cisco IOS XE?
Yes. The RSP1A-55 runs Cisco IOS XE 16.x and later, providing a programmable, secure, and modular software environment for next-generation services.
What redundancy options are available?
The ASR 903 platform supports in-chassis route processor redundancy and Stateful Switchover (SSO) when paired with dual RSP modules for zero-packet-loss failover.
What power supply options does the ASR 903 support?
It supports dual, field-replaceable AC or DC power supplies, delivering up to 500 W per supply and redundant power for high availability.
What is the typical power consumption of RSP1A-55?
The RSP1A-55 consumes approximately 75 W under full load, with dynamic power management features to optimize energy usage.
Does the RSP1A-55 support in-service software upgrades (ISSU)?
Yes. The processor supports Cisco IOS XE ISSU for non-disruptive upgrades, ensuring continuous service during maintenance windows.
What are the environmental and compliance specifications?
The module operates from –5 °C to 45 °C, meets NEBS Level 3, ETSI, FCC, and CE standards, and supports front-to-back airflow for data-center deployments.
How do I install the Route Switch Processor 1 in an ASR 903 chassis?
Slide the RSP1A-55 into the designated supervisor slot, secure the captive screws, connect out-of-band management, and power on for automatic initialization.
What software licensing is required?
RSP1A-55 requires the Cisco IOS XE Universal or Advantage license, which includes MPLS, BGP, Segment Routing, and advanced security features.
What is the warranty and support coverage?
Cisco offers a limited lifetime hardware warranty for RSP1A-55 plus one year of Cisco SMARTnet® support, with options to extend for four-hour or next-business-day response.
What are typical deployment use cases?
Common use cases include service provider aggregation, mobile backhaul, enterprise WAN edge, and multi-tenant data-center interconnect with QoS and MPLS VPN.
Where can I purchase the ASR 903 RSP1A-55?
You can order through authorized Cisco partners or from the Cisco Commerce Workspace using SKU A903-RSP1A-55 for direct procurement.