Table of Contents
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Chapter 1
Cisco XR 12410 Router Overview
Switch Fabric Card
Alarm Cards and Alarm Display
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The switch fabric cards augment the traffic capacity of the router. SFCs contain
switch fabric circuitry that can only carry user traffic between line cards or
between the RP and the line cards. SFCs receive all scheduling information and
the system clock signal from the CSCs.
The two alarm cards (in the switch fabric and alarm card cage) provide several
functions:
Supply +5 VDC to the MBus modules on router components (see
•
Power Subsystems, page
Work in conjunction with the alarm display to monitor the system. The alarm
•
display (sometimes referred to as the alarm display card) is above the
horizontal cable management bracket
Switch Fabric and Alarm Card Overview
1-5).
(Figure
1-7).
Cisco XR 12410 Router Installation Guide
AC and DC
1-11
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Table of Contents
Troubleshooting
