Cisco Carrier Routing System

Cisco CRS-3 24-Slot Fabric-Card Chassis

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The Cisco® CRS-3 Carrier Routing System offers industry-leading performance, advanced services intelligence, an environmentally conscious design, and system longevity. The Cisco CRS-3 is powered by the Cisco QuantumFlow Array – a chipset architecture based on multidimensional engineering and Cisco IOS® XR Software, a unique self-healing, distributed operating system.

Packet-based data communications are being replaced by video and rich media traversing the IP Next-Generation Network (NGN) in multiple directions, straining the architectural foundations of both public and private networks serving businesses and consumers. As part of the medianet, a media-aware Cisco IP NGN, the Cisco CRS-3 delivers continuous, always-on operations and scales easily from numerous single-chassis form factors to a massive multi-chassis system. Its highly efficient design conserves power, cooling, and rack-space resources while optimizing bandwidth capacity. The Cisco CRS-3 is compatible with the CRS-1, protecting investments for decades to come.

This data sheet provides detailed product specifications for the Cisco CRS-3 24-Slot Fabric-Card Chassis (FCC). This FCC is an important element of the Cisco CRS-3 multichassis system because it contains the second-stage switching fabric that interconnects multiple Cisco CRS-3 16‑slot single-shelf systems. The interconnectivity of FCCs and Cisco CRS-3 16-slot single-shelf systems allows the Cisco CRS-3 to gracefully scale from 4.48 to 322 Tbps of system capacity. For more information about the Cisco CRS-3 or about other interfaces available for the Cisco CRS-3, visit:

Figure 1. Cisco CRS-3 24-Slot Fabric-Card Chassis

Product Specifications

Table 1 gives specifications of the Cisco CRS-3 24-Slot FCC.

Table 1. Product Specifications



Software compatibility

Cisco IOS XR Software Release 4.0


Each Cisco CRS-3 24-Slot FCC includes:

Two Cisco CRS-3 fan controllers (part number CRS3-FCC-SC-22GE)
Eight Cisco CRS-3 S2 fabric cards (part number CRS3-FCC-SFC)
Two power shelves (DC, AC type Wye, or AC type Delta)
Two alarm cards
Two fan trays
One fan filter


4.48 to 322 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:

MIB II, including interface extensions (RFC1213)

System management:

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


CISCO-FRU-MIB (Cisco-Entity-FRU-Control-MIB)



Network management

Enhanced command-line interface (CLI)
Extensible Markup Language (XML) interface
CraftWorks Interface (CWI)
SNMP and MIB support
Cisco Active Network Abstraction (ANA)

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 8 fabric cards with traffic running: 3244W
Maximum power consumption when chassis is fully loaded with 24 fabric cards with traffic running: 7660W
Chassis power supply maximum output capacity: 8.8kW for DC power supply and 10kW 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 (thisrefers 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-3 24-Slot FCC.

Table 2. Compliance and Agency Approvals



Safety Standards

UL/CSA/IEC/EN 60950-1
IEC/EN 60825 Laser Safety
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-3 Multichassis System with 24-Slot Fabric Chassis


CRS-3 Fabric Chassis 24-Slot System(complete FCC)


Cisco CRS-3 FCC, spare (chassis only)

To place an order, visit: Cisco Ordering Home Page.

To download Cisco IOS Software, visit: Cisco Software Center.

Cisco Services

Cisco Services make networks, applications, and the people who use them work better together.

Today, the network is a strategic platform in a world that demands better integration between people, information, and ideas. The network works better when services, together with products, create solutions aligned with business needs and opportunities.

The unique Cisco Lifecycle approach to services defines the requisite activities at each phase of the network lifecycle to help ensure service excellence. With a collaborative delivery methodology that joins the forces of Cisco, our skilled network of partners, and our customers, we achieve the best results.

For More Information

For more information about the Cisco CRS-3 24-Slot FCC or the Cisco 16-Slot Single-Shelf System, contact your local Cisco account representative or visit: