Specifications

2
Cisco 12016, Cisco 12416, and Cisco 12816 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13811-01
Contents
Contents
• Switch Fabric Overview, page 2
• Alarm Card Overview, page 6
• Preparing for Installation, page 8
• Removing and Installing Switch Fabric Cards, page 11
• Removing and Installing an Alarm Card, page 17
• Upgrading the Switch Fabric, page 23
• Troubleshooting the Switch Fabric, page 27
• Regulatory, Compliance, and Safety Information, page 33
• Obtaining Documentation and Submitting a Service Request, page 35
Switch Fabric Overview
The heart of Cisco 12016, Cisco 12416, and Cisco 12816 Routers is a crossbar switch fabric that provides
synchronized gigabit-speed interconnections between the line cards and the route processor (RP). The
switch fabric consists of two CSCs and three SFCs installed in the switch fabric card cage. As shown in
Figure 1, the air filter door swings down to allow access to the cage. One CSC and all three SFCs make
up the active switch fabric; the second CSC provides redundancy.
Figure 1 Switch Fabric Card Cage
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
ALARM
CSC
0
F
AIL
1
0
1
2
ENABLED
SFC
Q OC-3/STM-POS
6DS3–SMB P
/
H
/
F
12DS3–SMB P
/
H
/
F
RX
TX
11
RX
OC-48/STM-16-SCPOS
OC-12/STM-4 ATM
FAST ETERNET
ROUTE PROCESSOR
26195
Switch fabric
card cage
(behind filter door)
Air filter door
Captive screws
(2 on each side)
Air filter