Foundation for the IP Next-Generation Network

View Interactive 3D Model of the CRS-1 4-Slot

The new Cisco CRS-1 4-Slot Single-Shelf System is the world's most compact 40-Gbps router on the market today, extending the core to regional class 3 and 4 central offices, MSO hub locations, and data center peering sites.

It represents a smaller, more cost-effective configuration of the Cisco CRS-1 Carrier Routing System, which marks a new era in carrier IP communications by powering the foundation for network and service convergence today while protecting investments for decades to come.

The Cisco CRS-1 4-Slot Single-Shelf System:

• Consists of a single 4-slot, 40-Gbps-per-slot line-card shelf for a total switching capacity of 320 Gbps
• Protects investments by supporting all CRS-1 physical layer interface modules (PLIMs) and modular services cards (MSCs)
• Offers you the service flexibility, continuous system operation, and system longevity of the CRS-1 in a smaller and more cost-effective configuration
• Features a midplane design for a space-efficient form factor
• Contains slots for four MSCs, four PLIMs, and two route processors in the front of the chassis
• Accommodates four fabric cards in the rear of the chassis which perform Stage 1, Stage 2, and Stage 3 switching, supporting service-intelligent fabric-based queuing and multicast replication