A900-RSP2A-128 Cisco ASR 900 Route Switch Processor 2 - 128G Base Scale

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Cisco A900-RSP2A-128 ASR 900 Route Switch Processor 2 – 128G Base Scale

Enterprise Cisco ASR 900 Route Switch Processor with 128G Base Scale for High-Performance Carrier Ethernet Networks

The Cisco A900-RSP2A-128 Route Switch Processor is a high-performance processing module designed for compatible Cisco ASR 900 Series Aggregation Services Routers. Engineered for carrier-grade routing, switching, and control plane operations, it provides the scalability and reliability required for service provider aggregation, Carrier Ethernet, Metro Ethernet, and enterprise WAN environments.

Featuring 128G Base Scale support and 4 GB of DRAM, the A900-RSP2A-128 enables efficient processing of demanding network services and growing traffic requirements. Its scalable architecture supports high-capacity aggregation networks while providing centralized system control and reliable route processing for compatible Cisco ASR 900 platforms.

Optimized for Cisco IOS XE, the Route Switch Processor supports advanced networking capabilities including Layer 2 and Layer 3 services, IPv4, IPv6, MPLS, QoS, and enterprise routing protocols such as BGP, OSPF, and IS-IS, depending on the host platform and software configuration. These capabilities make it suitable for complex service provider and enterprise network infrastructures.

The Cisco A900-RSP2A-128 is designed for high-availability deployments, supporting redundant Route Switch Processor configurations on compatible dual-RSP ASR 900 platforms. This redundancy helps maintain continuous network operations and minimizes service disruption in mission-critical environments.

Its modular plug-in design simplifies network expansion, maintenance, and infrastructure upgrades. Support for platform-dependent Online Insertion and Removal (OIR) further enhances operational flexibility and serviceability.

Ideal for Carrier Ethernet networks, service provider aggregation, Metro Ethernet deployments, enterprise WAN infrastructure, high-availability routing, and network expansion projects, the Cisco A900-RSP2A-128 Route Switch Processor with 128G Base Scale delivers scalable performance, carrier-grade reliability, and advanced routing capabilities for Cisco ASR 900 Series environments.

Product Specifications – Cisco A900-RSP2A-128 ASR 900 Series Route Switch Processor with 128G Base Scale
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Specification	Details
Product Name	Cisco A900-RSP2A-128 ASR 900 Series Route Switch Processor
Manufacturer	Cisco Systems
Part Number	A900-RSP2A-128
Product Series	Cisco ASR 900 Series
Product Type	Route Switch Processor (RSP)
Base Scale	128G
System Memory	4 GB DRAM
Primary Function	Routing, Switching and Control Plane Processing
Architecture	Carrier-Grade Route Switch Processor Architecture
Switching / Forwarding Role	Provides centralized forwarding and system control for compatible ASR 900 platforms
Control Plane Processing	High-performance route and system management processing
Data Plane Support	Platform-dependent packet forwarding and switching
Layer Support	Layer 2 and Layer 3 Services
Carrier Ethernet Support	Yes
Metro Ethernet Support	Yes
MPLS Support	Supported through compatible platform and software configuration
IPv4 Support	Yes
IPv6 Support	Yes
Routing Protocol Support	BGP, OSPF, IS-IS and other Cisco IOS XE-supported protocols
Quality of Service (QoS)	Advanced QoS and Traffic Management
High Availability	Supported
Redundant Processor Support	Yes, on compatible dual-RSP platforms
Failover Support	Platform-dependent RSP redundancy and high-availability features
Hot-Swappable	Online Insertion and Removal (OIR) support on compatible platforms
Operating System	Cisco IOS XE
Management	CLI, SNMP and Cisco IOS XE Management Tools
Programmability	Cisco IOS XE Automation and Programmability Capabilities
Security Features	ACLs, Control Plane Protection and Platform-Based Security Features
Network Synchronization	Platform-dependent timing and synchronization support
Installation Type	Plug-in Route Switch Processor Module
Power Source	Powered by the host ASR 900 chassis
Cooling	Provided by the host chassis cooling system
Form Factor	Chassis-Based Plug-in Module
Compatibility	Compatible Cisco ASR 900 Series Aggregation Services Routers
Deployment Type	Aggregation, Metro Ethernet and Service Provider Edge
Application	Carrier Ethernet, Enterprise WAN and High-Capacity Routing
Reliability	Carrier-Grade
Condition	Refurbished
Use Cases	Carrier Ethernet Networks, Service Provider Aggregation, Enterprise WAN, Metro Ethernet, High-Availability Routing, Network Expansion

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FAQs

Q1. Which routers are compatible with the A900-RSP2A-128?
It is designed for supported Cisco ASR 900 Series Aggregation Services Routers.

Q2. What does the 128G Base Scale provide?
It enables increased routing and forwarding scalability for larger enterprise and carrier network deployments.

Q3. Does this Route Switch Processor support redundancy?
Yes. It supports redundant RSP configurations to improve network availability and resiliency.

Q4. How much memory does the A900-RSP2A-128 include?
It comes with 4 GB of DRAM and 2 GB of flash storage.

Q5. Where is this processor typically deployed?
It is commonly used in carrier Ethernet, metro aggregation, and enterprise routing environments that require scalable and reliable network performance.