Specifications

11
Cisco 12016, Cisco 12416, and Cisco 12816 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13811-01
Removing and Installing Switch Fabric Cards
Required Tools and Equipment
The following tools and equipment are required to remove and install a CSC, SFC, or alarm card:
• ESD-preventive wrist strap
• Flat-blade screwdriver
Related Documentation
The following publications contain additional information:
• Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
• Regulatory Compliance and Safety Information for the Cisco 12000 Series Internet Router
Removing and Installing Switch Fabric Cards
The switch fabric card cage is located below the upper card cage, behind the air filter door on the front
of the chassis (see Figure 1 on page 2.) The switch fabric card cage has five keyed, vertical card slots for
the CSCs and SFCs. CSCs are installed in the left two card slots (labeled CSC 0 and 1); SFCs are
installed in the right three slots (labeled SFC 0, 1, and 2).
Note The router supports online insertion and removal (OIR) of SFCs, meaning that you can remove and
replace and SFC, or upgrade your router with a new SFC, while the router remains powered up. The
recommended procedure for any fabric card removal is to perform a hw module shut command on the
card, wait for approximately 1 minute, and then remove the card. Primary CSC OIR results in traffic loss
regardless of the line cards installed in chassis. Redundant CSC OIR should not cause traffic loss
regardless of the line cards installed in chassis.
A CSC can be removed and replaced with the router powered up only if there is a redundant CSC
installed. If your system is running with only one CSC, you must power down the router before removing
the CSC.