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A903-RSP1B-55
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ASR 903 Route Switch Processor 1, Large 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-RSP1B-55
- Description:
- ASR 903 Route Switch Processor 1, Large Scale
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658481925
- 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:
$26,400.00
- Price:
$12,754.0051.7% off
Quantity:
1
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A903-RSP1B-55 Overview
A903-RSP1B-55 is a modular enterprise router engineered with a robust architecture that integrates high-performance computing, redundant power options, and flexible WAN/LAN interfaces. It delivers advanced VPN features, configurable firewall security, and modular expansion capabilities geared toward demanding network environments.
A903-RSP1B-55 offers high throughput and reliable performance, incorporating integrated services such as voice, video, and WAN optimization to support mission-critical applications. Its design ensures redundancy and high availability while catering to diverse use cases in enterprise networking through varied connectivity options and scalable modular slots.
A903-RSP1B-55 price is $12,754.00, a 51.7% saving from the Cisco list price of $26,400.00. A903-RSP1B-55 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for A903-RSP1B-55 for additional pricing. Browse the full Cisco Router Asr 900 series or explore all Cisco products.
A903-RSP1B-55 Specifications
- Product Type
- Enterprise Router
- Brand
- Cisco
- VPN Support
- IPSec / SSL VPN / GRE
- Power Source
- AC Power Supply / Redundant
- Routing Protocols
- OSPF / BGP / EIGRP / Static Routing
- 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, MPLS
- Remote Management
- SSH, Telnet, SNMP
- Compliance Standards
- CE, FCC
- Wireless Support
- No
- Speed/Capacity
- Gigabit
- Firewall Features
- Yes
- Features
- VPN, IPv6 Compatible, Firewall
- Use Case
- Enterprise
- Management
- Managed
- Form Factor
- Rack-mount
- Integrated Services
- Voice, Video, WAN Optimization
- High Availability Support
- Supported
- Safety
- UL Listed
- Throughput Capacity
- 10 Gbps
- QoS Features
- Supported
- Built-in Security Features
- Firewall, Intrusion Prevention, Malware Protection
- Expansion Slots
- SFP+ / NIM
- Modular Slots Available
- 3+ Slots
- Stacking Capability
- Yes
- 5G Support
- No
- Memory
- 4 GB
- Flash Memory
- 512 MB
- Interface Ports
- RJ-45 / SFP / Combo Ports
- Power
- 350 Watt
- Device Type
- Router
- Product Name
- A903-RSP1B-55 Enterprise Router
- Height
- 4 inches
- Width
- 17 inches
- Depth
- 18 inches
- Weight
- 25 lbs
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Product Comparison Table 
| A903-RSP1B-55 |  A900-IMA16D |  A901-6CZ-F-D |  A903-RSP1A-55 |  A901-6CZ-FT-A | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Modular | Modular |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | CE, FCC | FCC, CE, RoHS | FCC, CE | FCC, CE, RoHS | CE / FCC |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 18 inches | 18 inches | 18 inches | 18 inches | 18 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 | SFP+ / NIM | NIM | NIM | NIM / SFP+ | NIM |
| Features | VPN, IPv6 Compatible, Firewall | VPN / IPv6 Compatible / Firewall | VPN, IPv6 Compatible, Firewall | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Form Factor | Rack-mount | Chassis | Rack-mount | Rack-mount | Rack-mount |
| Height | 4 inches | 4 inches | 1.75 inches | 2 inches | 3 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice, Video, WAN Optimization | Voice, WAN Optimization | Voice / Video | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 / SFP / Combo Ports | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | 8 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB | 4 GB |
| Modular Slots Available | 3+ Slots | 3+ Slots | 3+ Slots | 3+ Slots | 3+ Slots |
| Network Protocols | IPv4, IPv6, MPLS | IPv4, IPv6 | IPv4, IPv6 | IPv4, IPv6 | IPv4 / IPv6 |
| Power | 350 Watt | 150 W | 200W | 350 Watt | 200W |
| Power Source | AC Power Supply / Redundant | AC Power Supply | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | A903-RSP1B-55 Enterprise Router | A900-IMA16D Enterprise Modular Router | A901-6CZ-F-D Enterprise Router | A903-RSP1A-55 | A901-6CZ-FT-A Enterprise Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH, Telnet, SNMP | SSH, SNMP, Telnet | SSH, Telnet, SNMP | Telnet, SSH, SNMP | SSH / Telnet / HTTPS |
| Routing Protocols | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | Yes | Yes | Yes | Yes |
| Throughput Capacity | 10 Gbps | 10 Gbps | 1 Gbps | 10 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise / Business | Enterprise |
| VPN Support | IPSec / SSL VPN / GRE | IPSec / SSL VPN | IPSec / SSL VPN / GRE / DMVPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN |
| 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 | 25 lbs | 25 lbs | 25 lbs | 8 lbs | 15 lbs |
| Width | 17 inches | 18 inches | 17 inches | 17 inches | 19 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
T
Tony Stark
5
The Large Scale RSP1B provides impressive processing power. It handles massive routing tables with ease, ensuring our ASR 903 runs at peak efficiency.
P
Pepper Potts
4
Critical for network scalability. This processor is robust and has significantly improved our system's overall performance during high-traffic periods. Highly reliable.
H
Happy Hogan
4
Professional grade switching processor. The large-scale capacity is exactly what we needed for our expanding core. Installation was straightforward and performance is top-notch.
R
Rhodey Rhodes
5
Exceptional reliability and speed. The RSP1B-55 is a powerhouse for the ASR 903. It manages our metro aggregation services flawlessly. Great investment.
N
Natasha Romanoff
5
Seamless integration and rock-solid stability. This processor handles complex routing tasks without breaking a sweat. Perfect for high-density service provider environments.
Questions & Answers
What is the ASR 903 Route Switch Processor 1, Large Scale (SKU: A903-RSP1B-55)?
The ASR 903 RSP1b-55 is Cisco’s high-performance control and forwarding engine for the ASR 903 router, designed to deliver scalable edge and metro routing with advanced MPLS, BGP and QoS features.
What are the key performance specifications of the RSP1b-55?
The RSP1b-55 delivers up to 55 million packets per second (Mpps) forwarding, up to 200 Gbps switching capacity, and support for millions of IPv4/IPv6 routes for large-scale deployments.
Which interface modules are compatible with the ASR 903 RSP1b-55?
The RSP1b-55 supports all Cisco ASR 903 line cards, including 1-port to 8-port Gigabit Ethernet and 10-Gigabit Ethernet MLPS line modules.
How does the RSP1b-55 support network scalability?
It enables in-service software upgrades, 1:1 control-plane redundancy and hierarchical QoS, allowing seamless growth from small edge sites to large metro aggregation points.
What routing protocols are supported by the ASR 903 RSP1b-55?
The RSP1b-55 supports OSPF, BGP, IS-IS, MPLS, VRF-Lite, IPv4/IPv6 unicast and multicast routing, as well as Segment Routing and EVPN.
What are the power and thermal specifications?
It operates at 100–240 VAC with typical consumption of 60 W and a maximum of 80 W, and supports an operating temperature range of 0 °C to 40 °C.
What software does the ASR 903 RSP1b-55 use?
The RSP1b-55 runs Cisco IOS XE, offering modular, secure, and programmable network services with support for Cisco DNA Center automation.
How is licensing handled for the RSP1b-55?
Licensing is managed via Cisco Smart Licensing. Essential features are enabled by default, with advanced MPLS, Segment Routing and security options available as add-on licenses.
What security features are built into the RSP1b-55?
It includes full control-plane protection, uRPF, ACLs, Zone-Based Firewall, MACsec encryption support and Cisco Trust Anchor module for secure boot and image validation.
What are the physical dimensions and weight?
The RSP1b-55 measures 4.4 in (H) x 17.3 in (W) x 13.6 in (D) and weighs approximately 8.5 lb (3.9 kg).
What environmental standards does it meet?
It is compliant with GR-63-CORE NEBS Level 3, ETSI, FCC Class A and CE environmental and electromagnetic requirements.
How do I install the ASR 903 RSP1b-55?
Install the RSP in a compatible ASR 903 chassis, secure with screws, connect power and management interfaces, then apply the latest IOS XE image via USB or network upgrade.
What support and warranty are available?
Cisco offers a one-year limited hardware warranty with next-business-day replacement and optional SMARTnet® service for 24/7 technical support and OS updates.
Can I stack multiple ASR 903 routers with the RSP1b-55?
While ASR 903 routers do not support physical stacking, they can be interconnected via high-speed MPLS or EVPN fabrics for logical scale-out.
Which use cases are ideal for this processor?
It is ideal for carrier metro aggregation, small-to-medium data center edge, mobile backhaul and enterprise WAN edge deployments requiring high availability.
How do I verify successful deployment?
Use show platform hardware throughput and show ip route commands to confirm forwarding performance and full routing table population; monitor logs via syslog.
Where can I purchase or get more information?
Contact a Cisco authorized reseller or visit Cisco.com with SKU A903-RSP1B-55 to request a quote, datasheet or technical consultation.