Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router
Brand: Cisco | Category: Network Equipment
SKU: CSC-A9K-RSP-4G | Part #: A9K-RSP-4G | MPN: A9K-RSP-4G
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About the Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router
The Cisco ASR 9000 A9K-RSP-4G is a carrier-class Route Switch Processor (RSP) module engineered for mission-critical service provider and enterprise backbone networks. As a distributed forwarding architecture, the RSP handles control plane operations while line cards execute hardware forwarding, delivering the reliability and performance demanded by large-scale IP/MPLS infrastructures. This module features 4 GB of DRAM and runs Cisco IOS XR, providing a robust foundation for complex routing topologies and high-availability deployments.
Network engineers and infrastructure teams select the A9K-RSP-4G for its comprehensive protocol support and resilience features. The processor supports BGP, OSPF, IS-IS, EIGRP, RIP, and static routing, alongside full MPLS capabilities including MPLS TE and both L3VPN and L2VPN services. Dual-stack IPv4/IPv6 support and Segment Routing (SR-MPLS) ensure compatibility with modern network architectures, while hierarchical QoS policy coordination enables granular traffic management. High-availability mechanisms—including Non-Stop Routing (NSR), Non-Stop Forwarding (NSF), Stateful Switchover (SSO), and Graceful Restart—minimize downtime during planned maintenance and unplanned faults. The module supports 1+1 RSP redundancy within compatible ASR 9000 chassis, reinforcing carrier-grade reliability.
The A9K-RSP-4G integrates into the Cisco ASR 9000 family, fitting the RSP slot of compatible chassis including the ASR 9001, ASR 9006, ASR 9010, ASR 9904, ASR 9906, and ASR 9910. Management is provided through a console port, Management Ethernet (RJ-45), and USB port, streamlining operational control. Whether you are deploying a new core router, upgrading an existing ASR 9000 deployment, or consolidating network functions, Omnixon Global can support your infrastructure evolution. Contact our team to request a quotation for the Cisco A9K-RSP-4G and explore volume pricing and regional support options.
Technical Specifications
| Brand | Cisco |
| Category | Network Equipment |
| SKU | CSC-A9K-RSP-4G |
| Part Number | A9K-RSP-4G |
| Condition | New |
| Capacity | 4GB |
| Form Factor | Rack-Mount |
| Product Series | Cisco ASR 9000 |
| Module Type | Route Switch Processor (RSP) |
| DRAM | 4 GB |
| Operating System | Cisco IOS XR |
| Routing Protocols Supported | BGP, OSPF, IS-IS, EIGRP, RIP, static routing |
| MPLS Support | Yes — MPLS, MPLS TE, MPLS VPN (L3VPN, L2VPN) |
| IPv6 Support | Yes — dual-stack IPv4/IPv6 |
| High Availability Features | Non-Stop Routing (NSR), Non-Stop Forwarding (NSF), Stateful Switchover (SSO), Graceful Restart |
| Redundancy | Supports 1+1 RSP redundancy within compatible ASR 9000 chassis |
| Management Interfaces | Console port, Management Ethernet (RJ-45), USB port |
| Form Factor | Route Switch Processor blade for ASR 9000 chassis RSP slot |
| Compatible Chassis | Cisco ASR 9001, ASR 9006, ASR 9010, ASR 9904, ASR 9906, ASR 9910 (RSP slot compatible variants) |
| Forwarding Architecture | Distributed — RSP handles control plane; line cards perform hardware forwarding |
| Segment Routing Support | Yes — SR-MPLS |
| QoS Support | Yes — hierarchical QoS (H-QoS) policy coordination |
Frequently Asked Questions about Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router
What does the Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router do?
The Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router is enterprise networking hardware for data-center, campus, and branch deployments. Common roles include core/distribution switching, server uplinks, top-of-rack fabric, and edge connectivity in mixed Cisco/Juniper/Arista environments.
Is the Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router compatible with my infrastructure?
The Cisco ASR 9000 A9K-RSP-4G Cisco ASR 9000 carrier router interoperates with standard switching protocols (LACP, MLAG/VPC, 802.1Q, OSPF/BGP). For specific cross-vendor scenarios — Cisco-to-Arista MLAG peering, fabric integration with Cumulus/SONiC, or migration from legacy Catalyst — our network engineers map a compatibility plan as part of the RFQ.