Cisco Carrier Routing System

Cisco CRS-1 24-Slot Fabric-Card Chassis

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The Cisco® CRS-1 Carrier Routing System is the industry's first carrier router offering continuous system operation, service flexibility, and system longevity. The Cisco CRS-1 is powered by Cisco IOS® XR Software - a unique self-healing, distributed operating system designed for always-on operation while scaling system capacity up to 92 Tbps.

The innovative system architecture combines the Cisco Silicon Packet Processor, the first programmable 40-Gbps application-specific integrated circuit (ASIC), with the Cisco Service Separation Architecture for service flexibility and speed to service. The Cisco CRS-1 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 (Figure 1).
This data sheet provides detailed product specifications for the Cisco CRS-1 24-Slot Fabric-Card Chassis (FCC). This FCC is an important element of the Cisco CRS-1 Multichassis System because it contains the second-stage switching fabric that interconnects multiple Cisco CRS-1 16-slot single-shelf systems. The interconnectivity of FCCs and Cisco CRS-1 16-slot single-shelf systems allows the Cisco CRS-1 to gracefully scale from 1.2 to 92 Tbps of system capacity. The initial multichassis system consists of two Cisco CRS-1 16-slot single-shelf systems and one FCC. For more information about the Cisco CRS-1 or about other interfaces available for the Cisco CRS-1, visit:

Figure 1. Cisco CRS-1 24-Slot Fabric-Card Chassis

Product Specifications

Table 1 gives specifications of the Cisco CRS-1 24-Slot FCC.

Table 1. Product Specifications



Software Compatibility

Cisco IOS XR Software Release 3.3


Each Cisco CRS-1 24-Slot FCC includes:

• Two Cisco CRS-1 fan controllers (part number CRS-FCC-SC-22GE)
• Eight Cisco CRS-1 S2 fabric cards (part number CRS-FCC-SFC)
• Two power shelves (DC, AC type Wye, or AC type Delta)
• Two alarm cards
• Two fan trays
• One fan filter


1.2- to 92-Tbps switching capacity

Reliability and Availability

System redundancy:

• Power-shelf redundancy 1:1
• Fan-tray redundancy 1:1
• Fan-controller redundancy 1:1
• Alarm-card redundancy 1:1
• Fabric-card redundancy 1:8


Simple Network Management Protocol (SNMP) framework support:

• SNMPv1
• SNMPv2c
• SNMPv3
• MIB II, including interface extensions (RFC 1213)

System management:

• Cisco FTP Client MIB
• Cisco Process MIB
• Cisco Syslog MIB
• IF-MIB (RFC 2233/RFC 2863)


• CISCO-entity-asset-MIB
• CISCO-entity-sensor-MIB
• CISCO-FRU-MIB (Cisco-Entity-FRU-Control-MIB)


• CISCO-Fabric-Mcast-MIB
• CISCO-Fabric-Mcast-Appl-MIB

Network Management

• Enhanced command-line interface (CLI)
• Extensible Markup Language (XML) interface
• Craft Works Interface (CWI)
• SNMP and MIB support

Programmatic Interfaces

XML schema support

Physical Dimensions

Chassis height:

• 84 in. (213.36 cm) with power shelves installed
• 80 in. (203.2 cm) without power shelves installed

Chassis width:

• 23.6 in. (59.94 cm)

Chassis depth:

• 36 in. (91.44 cm)
• 41.5 in. (105.41 cm), including cable-management system and front cover


• 780 lb (355 kg) as shipped, chassis only with fan trays installed, no power shelves
• Approximately 1100 lb (500 kg) chassis ship weight including crate and pallet
• 1630 lb (740 kg) chassis fully configured, using all card slots, power shelves, and cosmetics (estimated)


• Maximum power consumption when chassis is fully loaded with 24 fabric cards with traffic running: 7036W
• Chassis power supply maximum output capacity: 8.8kW for DC power supply and 10 KW for AC power supply

Environmental Conditions

Storage temperature: -40 to 70°C (-40 to 158°F)

Operating temperature:

• Normal: 5 to 40°C (41 to 104°F)
• Short-term: -5 to 50°C (23 to 122°F)

Relative humidity:

• Normal: 5 to 85%
• Short-term: 5 to 90% but not to exceed 0.024 kg water/kg of dry air;

Short-term refers to a period of not more than 96 consecutive hours and a total of not more than 15 days in 1 year (this refers to a total of 360 hours in any given year, but no more than 15 occurrences during that 1-year period)

Approvals and Compliance

Table 2 gives compliance and agency approvals for the Cisco CRS-1 24-Slot FCC.

Table 2. Compliance and Agency Approvals



Safety Standards

• UL/CSA/IEC/EN 60950-1
• 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 (10 V/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 (2-kV CM and 1-kV DM)
• 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 (30 A/m)
• IEC/EN-61000-4-11: Voltage DIPS, Short Interruptions, and Voltage Variations


• 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

Ordering Information

Table 3. Ordering Information

Product Part Number

Product Name


CRS-1 Multichassis System with 24-Slot Fabric Chassis 


CRS-1 Fabric Chassis 24-Slot System  (complete FCC)


Cisco CRS-1 FCC, spare (Chassis Only)

To place an order, visit: Cisco Ordering Home Page.
To download Cisco IOS Software, visit: Cisco Software Center.

Service and Support

Cisco Systems ® offers numerous innovative services programs to accelerate customer success. These programs are delivered through a unique combination of people, processes, tools, and partners, resulting in high levels of customer satisfaction. Cisco services help you protect your network investment, optimize network operations, and prepare your network for new applications to extend network intelligence and the power of your business. For more information about Cisco services, visit: Cisco Technical Support Services or Cisco Advanced Services.

For More Information

For more information about the Cisco CRS-1 24-Slot FCC or the Cisco 16-Slot Single-Shelf System, contact your local Cisco account representative or visit Cisco at: