The Cisco® Carrier Routing System (CRS) provides outstanding economical scale, IP and optical network convergence, and a proven architecture. Cisco CRS modular service cards (MSCs) are powered by advanced application-specific integrated circuits (ASICs), a chipset architecture based on multidimensional engineering, and Cisco IOS® XR Software, a unique distributed operating system.
Networks are facing new challenges with the Internet of Everything. Trillions of things have become Internet ready and can start talking to each other, as well as to applications and people. The effects of machine-driven events change network dynamics and impose entirely new service requirements. Managing bandwidth is no longer enough. Networks must become more elastic and programmable, capable of adapting and evolving. As part of an evolving and programmable network, the Cisco CRS delivers highly reliable operations and scales easily from single-chassis form factors to a massive multichassis system. Its design offers industry-leading efficiency in power consumption, cooling, and rack-space resources, while providing intelligent service-rich bandwidth capacity. The Cisco CRS supports up to 400-Gbps line rates, and its hardware is backward and forward compatible, helping to protect existing and future investments.
Cisco CRS label switch processors provide distributed forwarding-engine capability for the Cisco CRS platform. The label switch processors allow a flexible packet transport solution and are responsible for forwarding-processing tasks, handling all network traffic flows through the data plane. They can switch Multiprotocol Label Switching (MPLS) traffic at high throughput and low latency and jitter and offer immediate scalability to hundreds of thousands of label switched paths (LSPs).
Both the Cisco CRS-X Label Switch Processor and the Cisco CRS-3 Label Switch Processor are supported across the Cisco CRS 8-slot, 16-slot, and multichassis form factors and are compatible with both Cisco CRS enhanced chassis and legacy chassis-based systems.
The Cisco CRS-X Label Switch Processor (Figure 1) features two 200-Gbps forwarding ASICs and can operate in either 200-Gbps or 400-Gbps mode. While operating in a 400-Gbps mode in a Cisco CRS enhanced chassis-based system, the line card delivers full 400-Gbps line-rate throughput. In a 200-Gbps mode, one of the two forwarding ASICs is in a shut-down state to conserve on power and thermals.
The Cisco CRS-X Label Switch Processor main features include:
● Seamless compatibility with previous-generation Cisco CRS-1 (40 Gbps) and Cisco CRS-3 (140 Gbps) line cards on the same chassis with Cisco CRS-X fabric
● Single-flow traffic processing at 100 Gbps in each direction
The Cisco CRS-3 Label Switch Processor main features include:
● Powered by Cisco Flow Array®, one of the world's most sophisticated chipset architectures, which includes a 140-Gbps ASIC, based on 65-nanometer (nm) technology; Cisco Flow Array was engineered for Cisco CRS routers to provide higher bandwidth without compromising service performance
● Supported across all the Cisco CRS form factors: 4-slot, 8-slot, 16-slot, and multichassis
● Scaling of Cisco CRS per-slot forwarding capacity to 140 Gbps
● Single-flow traffic processing at 140 Gbps in each direction
Both the Cisco CRS-X and CRS-3 Label Switch Processors are optimized for label switching functions in a service provider's network and include:
● Additional services such as CoS processing, multicast, traffic engineering, and statistics gathering, all performed at 140 Gbps line rate
● Deployment flexibility by occupying one-half slot, allowing pairing with a variety of different interface modules
● Support for up to 8 queues per port
● Scaling for hundreds of thousands of LSPs and traffic engineering midpoints
● Built-in support for carrier-class high availability with fast reroute (FRR) capability, providing restoration in 50 ms in case of link or node failure
● Built-in hardware acceleration for critical network control traffic
● Built-in support for video monitoring for a comprehensive video quality of experience (QoE)
● Accurate hardware-assisted time-stamping support for service-level agreement (SLA) monitoring
Table 1 provides specifications for the Cisco CRS-X and CRS-3 label switch processors.
Table 1. Product Specifications
Approvals and Compliance
Table 2 provides standards compliance information for Cisco CRS label switch processors.
Table 2. Compliance and Agency Approvals
● UL/CSA/IEC/EN 60950-1, 2nd ed, AM 1
● IEC/EN 60825 Laser Safety
● ACA TS001
● AS/NZS 60950
● FDA Code of Federal Regulations Laser Safety
● FCC Class A
● ICES 003 Class A
● AS/NZS 3548 Class A
● CISPR 22 (EN55022) Class A
● VCCI Class A
● BSMI Class A
● IEC/EN 61000-3-2: Power Line Harmonics
● IEC/EN 61000-3-3: Voltage Fluctuations and Flicker
Immunity (Basic standards)
● IEC/EN-61000-4-2: Electrostatic Discharge Immunity (8-kV contact, 15-kV air)
● IEC/EN-61000-4-3: Radiated Immunity (10V/m)
● IEC/EN-61000-4-4: Electrical Fast Transient Immunity (2-kV power, 1-kV signal)
● IEC/EN-61000-4-5: Surge AC Port (4-kV CM, 2-kV DM)
● IEC/EN-61000-4-5: Signal Ports (1 kV)
● IEC/EN-61000-4-5: Surge DC Port (1 kV)
● IEC/EN-61000-4-6: Immunity to Conducted Disturbances (10 Vrms)
● IEC/EN-61000-4-8: Power Frequency Magnetic Field Immunity (30A/m)
● IEC/EN-61000-4-11: Voltage Dips, Short Interruptions, and Voltage Variations
ETSI and EN
● EN300 386: Telecommunications Network Equipment (EMC)
● EN55022: Information Technology Equipment (Emissions)
● EN55024: Information Technology Equipment (Immunity)
● EN50082-1/EN-61000-6-1: Generic Immunity Standard
Network Equipment Building Standards (NEBS)
This product is designed to meet the following requirements (qualification in progress):
● SR-3580: NEBS Criteria Levels (Level 3)
● GR-1089-CORE: NEBS EMC and Safety
● GR-63-CORE: NEBS Physical Protection
To place an order, contact your local Cisco representative or visit the. Use the ordering information in Table 3.
Table 3. Ordering Information
Product Part Number
Cisco CRS-3 Label Switch Processor
Cisco CRS-X Label Switch Processor
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