Cisco 7604-RSP720C-R Manuel d'utilisateur télécharger pdf (Page 29)

Chapter 1: Routing 1-29

Routing

For More Information

http://www.cisco.com/go/7200

Service Provider Core/Edge Routers

The Cisco Carrier Routing System (CRS) provides industry-leading performance,

advanced services intelligence, environmentally aware design, and system

longevity. Each model uses Cisco IOS XR Software, a unique self-healing,

distributed operating system.

Models include:

• Cisco CRS-3, powered by Cisco QuantumFlow Array, a chipset architecture

engineered in multiple dimensions of scale, services, and savings

• Cisco CRS-1, built on the Cisco Silicon Packet Processor (SPP)

Packet-based data communications are being replaced by video and rich media

crossing the IP Next-Generation Network (NGN) in multiple directions. As part of a

medianet, a media-aware Cisco IP NGN, Cisco CRS eases this strain on networks. It efficiently handles the

multidirectional traffic of network and data center cloud interactions.

The Cisco CRS:

• Delivers continuous operations, with high performance single-flow line-rate forwarding

• Scales easily from numerous single-chassis form factors to a massive multichassis system, up to 322 Tbps

• Provides industry-leading efficiency, requiring low power, cooling, and rack-space use for intelligent,

service-rich bandwidth capacity

Cisco CRS-3 models build on the CRS-1 models' backward and forward compatibility, protecting your existing

and future investments for decades to come.

The Cisco CRS includes two major elements, line card shelves and fabric shelves, combinations of which allow

the system to scale from four 40-Gbps or 140-Gbps slots to as many as 1152 40-Gbps or 140-Gbps slots in 72

line card shelves interconnected using eight fabric shelves, all operating as a single system.

• Cisco CRS 16-Slot Single-Shelf System—A single, 16-slot line card shelf with total switching capacity of

1.2 Tbps (40-Gbps/slot) or 4.48 Tbps (140-Gbps/slot); built from a 16-slot line card chassis featuring a

midplane design

• Cisco CRS 8-Slot Single-Shelf System—A single, 8-slot line card shelf with total switching capacity of

640 Gbps (40-Gbps/slot) or 2.24 Tbps (140-Gbps/slot); built from an 8-slot line card chassis featuring a

midplane design

• Cisco CRS 4-Slot Single-Shelf System—A single, 4-slot line-card shelf with total switching capacity of

320 Gbps (40-Gbps/slot) or 1.12 Tbps (140-Gbps/slot); built from a 4-slot line card chassis featuring a

midplane design

• Cisco CRS-1 Multishelf System—Two to 72 line card shelves and 1 to 8 fabric shelves with a total switching

capacity of up to 92 Tbps (40-Gbps/slot) or 322 Tbps (140-Gbps/slot); shelves are connected only to the

fabric-card shelves where stage 2 of the three-stage switching is performed

Key Features and Benefits

• Delivery of differentiated voice, video, and data with mobility and business services with better quality of

service (QoS) and performance

• Flexible functionality integrated in a single platform: rich services’ processing, high performance packet

routing, efficient label switching, optimized optical transport

• Multicast traffic replicated in the fabric for efficient broadcast video applications

• Optical Transport (ITU G.709) integration with IP-over-DWDM (IPoDWDM) technology

• Intelligence for Data-Center Cloud interaction with Network Positioning System (NPS) technology

• Rich IPv6 support including dual-stack, translation/tunneling techniques with Carrier-Grade IPv6 (CGv6)

• Wire-rate line card integrated application performance monitoring, including for video

• Hardware-accelerated Operations, Administration and Performance (OAM)

• Consolidation of multiple networks into a single platform using secure domain routers (SDRs) while

maintaining hardware and software isolation

• Dedicated 8-KB ingress and egress queues on the line cards for superior performance

• Isolation of different classes of services to deliver high-quality voice, video, and premium traffic

• Granular process-level In Service Software Upgrades (ISSUs)

• Non-service affecting online insertion and removal (OIR) of all components to reduce downtime

• Cisco Nonstop Forwarding (NSF) and Stateful Switchover (SSO) to eliminate single points of failure without

service interruption, forwarding continues before, during, and after a route-processor switchover

• In-service, non-disruptive scaling from a single chassis to multiple chassis

• Shared port adapters (SPAs) and SPA interface processors (SIPs) to preserve hardware investment across

Cisco platforms, including the Cisco 12000, 7600, and 7300 Series Routers

Cisco 7200 MPLS/IPv6 Bundles

7206-IPV6/ADSVC/K9 Cisco 7206VXR IPv6/Adv. Ent. Services with NPE-G2

Cisco Carrier Routing System (CRS)

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Cisco 7604-RSP720C-R Manuel d'utilisateur Page 29

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