Specifications

Cisco 12016, Cisco 12416, and Cisco 12816 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions

OL-13811-01

Switch Fabric Overview

There are currently six switch fabric options:

• Enhanced 2.5-Gbps switch fabric (80-Gbps switching system bandwidth) used in the Cisco 12016

Router—Consists of the 12016E-CSC and the 12016E-SFC fabric sets. Each SFC or CSC card

provides a 2.5-Gbps full-duplex connection to each line card in the system. Thus, for a Cisco 12016

Router with 16 line cards with 2 x 2.5 Gbps (full duplex), the system switching bandwidth is 16 x 5

Gbps = 80 Gbps. The enhanced fabric is required when enabling the Single-Router Automatic

Protection Switching (APS) or Building Integrated Timing Supply (BITS). It is also required when

configuring the chassis with 12000-SIP-401 2.5G SPA based line-card.

• Enhanced 10-Gbps switch fabric (320-Gbps switching system bandwidth) used in the Cisco 12416

Router—Consists of the 12416E-CSC and the 12416E-SFC fabric sets. Each SFC or CSC card

provides a 10-Gbps full-duplex connection to each line card in the system. Thus, for a Cisco 12416

Router with 16 line cards with 2 x 10 Gbps (full duplex), the system switching bandwidth is 16 x 20

Gbps = 320 Gbps. The enhanced fabric is required when enabling the Single-Router APS or BITS

features.

• Enhanced 40-Gbps switch fabric (1.2-Tbps switching system bandwidth) used in the Cisco 12816

Router—Consists of the 12816E-CSC and the 12816-SFC fabric sets. Each SFC or CSC card

provides a 40-Gbps full-duplex connection to each line card in the system. Thus, for a Cisco 12816

Internet Router with 16 line cards with 2 x 40 Gbps (full duplex), the system switching bandwidth

is 16 x 80 Gbps = 1.2 Tbps. The enhanced fabric is required when enabling the Single-Router APS

or BITS features.

• 2.5-Gbps switch fabric (80-Gbps switching system bandwidth) used in the Cisco 12016

Router—Consists of the GSR16/80-CSC and the GSR16/80-SFC fabric sets. Each SFC or CSC card

provides a 2.5-Gbps full-duplex connection to each line card in the system. Thus, for a Cisco 12016

Router with 16 line cards with 2 x 2.5 Gbps (full duplex), the system switching bandwidth is 16 x 5

Gbps = 80 Gbps.

• 10-Gbps switch fabric (320-Gbps switching system bandwidth) used in the Cisco 12416

Router—Consists of the GSR16/320-CSC and the GSR16/320-SFC fabric sets. Each SFC or CSC

card provides a 10-Gbps full-duplex connection to each line card in the system. Thus, for a

Cisco 12416 Router with 16 line cards with 2 x 10 Gbps (full duplex), the system switching

bandwidth is 16 x 20 Gbps = 320 Gbps.

• 40-Gbps switch fabric (1.2-Tbps switching system bandwidth) used in the Cisco 12816

Router—Consists of the 12816-CSC and the 12816-SFC fabric sets. Each SFC or CSC card provides

a 40-Gbps full-duplex connection to each line card in the system. Thus, for a Cisco 12816 Internet

Router with 16 line cards with 2 x 40 Gbps (full duplex), the system switching bandwidth is 16 x 80

Gbps = 1.2 Tbps.

Note Although they perform similar functions, you cannot intermix SFCs and CSCs. The switch fabric is a

card set. You must use either the 2.5-, 10-, or 40-Gbps switch fabric card set. Also, the 10-Gbps switch

fabric does not operate in one-quarter bandwidth mode as did some earlier models of the

Cisco 12000 Series routers.

Switch Fabric Card Types

The router ships from the factory with either one or two CSCs and three SFCs installed in the five slots

in the card cage. CSCs are installed in slot 0 or slot 1 (labeled CSC 0 or CSC 1); SFCs are installed in

slots 2, 3, and 4 (labeled SFC 0, SFC 1, or SFC 2).

The CSC provides the following functionality: