Cisco ASR 903 Route Switch Processor A903-RSP1B-55 Overview
Cisco ASR 903 Route Switch Processor A903-RSP1B-55 is a genuine edge and wide-area routing product from Cisco, a leading enterprise networking vendor whose Catalyst, Nexus and ISR families power campus, data-center and branch networks worldwide. Belonging to the Cisco family, the A903-RSP1B-55 unit is built to the original factory specification, so it integrates with existing Cisco deployments predictably and behaves exactly as the platform documentation describes. In the network, it is deployed as a standalone unit or as part of a larger managed network, following the standard operating procedures of the platform.
From a specification standpoint, it offers 1 ports for client, server or uplink connectivity; aggregate capacity of 55 Gbps. These are the original factory figures for this model, giving administrators a clear picture of what the unit can deliver before it enters service. Standard mounting, cabling and management practices apply, so deployment follows the same procedures as other Cisco hardware already running in the environment.
Typical deployments include branch and campus WAN connectivity, service-provider edge and MPLS deployments, and secure remote-site interconnect. Organizations commonly source it for refresh programs, capacity expansion and spares management, keeping a tested unit on hand so outages stay short and replacements are predictable. The factory detail for this unit reads: “Cisco ASR 903 Route Switch Processor A903-RSP1B-55 ASR 903 Route Switch Processor 1, Large Scale”. This makes it a practical choice when original-spec hardware is required at a predictable cost.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including port status, console access and firmware state. Our warranty coverage and responsive technical support protect the purchase after it arrives, and our team can confirm revision levels and software compatibility before you order. For volume requirements we also offer configuration checks and staged delivery options.
Contact our sales team for current availability, lead time and shipping options for the A903-RSP1B-55. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Enterprise WAN
Branch and campus routing with advanced services.
Service Provider
Edge routing for ISP and MPLS deployments.
Data Center
Interconnect core and aggregation layers reliably.
Buying a Pre-Owned A903-RSP1B-55
Verify the unit is tested, firmware confirmed, and condition documented. Every unit is fully tested and warranty covered. Contact our team for current stock and availability.
A903-RSP1B-55 Specifications | |
Shipment package size in inches (L x W x H) | 14.38 x 14.38 x 6.25 |
Shipment package weight | 6.2 lbs. |
Power consumption of chassis with 2 power supplies, 1 fan tray, and 1 RSP | A903-RSP1B-55: 210W |
RSP memory (DRAM) | A903-RSP1B-55: 4 GB |
Flash memory (storage) | 2 GB |
Service scale | A903-RSP1B-55: Large |
Maximum transmission unit (MTU) | Configurable MTU of up to 9216 bytes, for bridging on Gigabit Ethernet, 10 and 100 Gigabit Ethernet |
Maximum interface throughput | 55 Gbps |
External USB flash memory | Mass storage - USB 2.0 type A receptacle connector port |
MTBF at 104ºF (40ºC) operating temperature | 300,000 hours |
Management ports | Copper 10/100/1000Base-T LAN management port - RJ45 connector port Console/Aux RS232 serial ports - RJ45 connector port Console - USB 2.0 type A receptacle connector port |
Timing ports | BITS simultaneous input and output (J1/T1/E1) - RJ48 connector port 1 pps input - mini-coax connector port 1 pps output - mini-coax connector port 2.048/10 MHz input - mini-coax connector port 2.048/10 MHz output - mini-coax connector port |
Maximum Single-Dimensional Service Scale | |
IEEE 802.1ag (CFM) at 3.3ms interval | 256 |
MAC addresses | 256,000 |
Bridge domains | 4,000 |
Ethernet flow points | 8,000 |
L3 interfaces | 1,000 |
Queues | 32,000 |
Classifications | 24,000 |
| Class maps | 4,000 |
A903-RSP1B-55 - Product Notes
This listing is a specific SKU variant of the A903-RSP1B-55 family. Review the specifications above and confirm compatibility with your existing infrastructure, including software version, mounting, and interface requirements, before ordering.
For volume requirements we offer configuration checks and staged delivery options. Our team can confirm revision levels, software compatibility, and lead time before you place an order.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation.
A903-RSP1B-55 - Cisco Series Notes
This listing is part of the Cisco enterprise networking product family, sourced and tested by LinkNewNet for enterprise deployment. Cisco router is positioned at the WAN edge, branch, or service-provider aggregation point. It provides routing, VPN, QoS and security services, and integrates with Cisco IOS-XE / IOS-XR management.
Deployment guidance: When planning this A903-RSP1B-55 unit into a network, confirm the software image (IOS/IOS-XE/NX-OS) required, the power and cooling profile, and the upstream/downstream interface types that match your existing infrastructure. For a like-for-like refresh, match the feature set of the units already in service so management and automation behave consistently.
Our Cisco reconditioning process: Every pre-owned Cisco unit at LinkNewNet passes a documented reconditioning flow before dispatch - visual inspection, internal cleaning, firmware verification, port-by-port testing, and configuration reset to factory defaults. This ensures the unit you receive operates reliably and integrates cleanly with your existing Cisco management tools.
Related models in this family: ASR-920-24SZ-M, A900-IMA8S, ASR-903, A900-PWR-BLANK, A903-RSPA-BLANK. Compare specifications to confirm the right port density, feature set and uplink options for your deployment.
