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Chapter 1
Cisco XR 12410 Router Overview
Switch Fabric and Alarm Card Overview
Note
OL-13832-01
The switch fabric provides synchronized gigabit-speed connections between line
cards and the route processor. The 9-slot switch fabric and alarm card cage
contain:
2 clock scheduler cards (CSCs)
•
5 switch fabric cards (SFCs)
•
2 alarm cards
•
The two alarm cards that are located in the switch fabric and alarm card
Note
cage are not part of the switch fabric.
One CSC and four SFCs are required for an active switch fabric; the second CSC
and the fifth SFC provide redundancy. The combination of CSCs and SFCs make
up the 10-Gbps per-slot switch fabric.
Each SFC or CSC provides a 10-Gbps full-duplex connection to each line card in
the system. For example, in a Cisco XR 12410 router with 8 line cards, each with
2 x 10 Gbps capacity (full duplex), the system switching bandwidth is 8 x 20 Gbps
= 160 Gbps.
Figure 1-2
shows the slot configuration in the switch fabric and alarm card cage.
The labeling identifies the type of card for each slot and can only be seen when
the air filter door is opened.
Cisco XR 12410 router support online insertion and removal (OIR), which allows
you to remove and replace a card while the router remains powered on.
Switch Fabric and Alarm Card Overview
Cisco XR 12410 Router Installation Guide
1-9
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Troubleshooting
