Specifications

3
Cisco 12010, Cisco 12410, and Cisco 12810 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13810-01
Switch Fabric Overview
• Enhanced 10-Gbps switch fabric (200-Gbps switching system bandwidth) used in the Cisco 12410
Router—Consists of the 12410E-CSC and the 12410E-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 12410
Router with 10 line cards with 2 x 10 Gbps (full duplex), the system switching bandwidth is 10 x 20
Gbps = 200 Gbps. The enhanced fabric is required when enabling the Single-Router APS or BITS
features.
• Enhanced 40-Gbps switch fabric (800-Gbps switching system bandwidth) used in the Cisco 12810
Router—Consists of the 12810E-CSC and the 12810-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 12810
Internet Router with 10 line cards with 2 x 40 Gbps (full duplex), the system switching bandwidth
is 10 x 80 Gbps = 800-Gbps. The enhanced fabric is required when enabling the Single-Router APS
or BITS features.
• 2.5-Gbps switch fabric (50-Gbps switching system bandwidth) used in the Cisco 12010
Router—Consists of the 12010-CSC and the 12010-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 12010 Router
with 10 line cards with 2 x 2.5 Gbps (full duplex), the system switching bandwidth is 10 x 5 Gbps
= 50 Gbps.
• 10-Gbps switch fabric (200-Gbps switching system bandwidth) used in the Cisco 12410
Router—Consists of the GSR10-CSC= and the GSR10-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 12410
Router with 10 line cards with 2 x 10 Gbps (full duplex), the system switching bandwidth is 10 x 20
Gbps = 200 Gbps.
• 40-Gbps switch fabric (800-Gbps switching system bandwidth) used in the Cisco 12810
Router—Consists of the 12810-CSC= and the 12810-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 12810
Internet Router with 10 line cards with 2 x 40 Gbps (full duplex), the system switching bandwidth
is 10 x 80 Gbps = 800 Gbps.
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
Your router ships from the factory with two CSCs and five SFCs installed in the nine slots in the switch
fabric and alarm card cage.
CSCs are installed in slot 0 or slot 1 (labeled CSC 0 or CSC 1); SFCs are installed in slots 2, 3, 4, 5, and
6. (labeled SFC 0, SFC 1, SFC 2, SFC 3, and SFC 4).
The CSC provides the following functionality:
• Scheduler—Handles requests from the line cards for access to the switch fabric and determines
when to allow the line cards access to the switch fabric.
• System clock—Sent to all SFCs, line cards, and the route processor (RP). The system clock
synchronizes data transfers between line cards or between line cards and the RP through the switch
fabric.
• Switch fabric—Carries the user traffic between line cards or between the RP and a line card. The
switch fabric on the CSC is identical to the switch fabric on the SFC.