Cisco CRS-1 - Carrier Routing System Router Getting Started Manual page 164

Configure Routing Interfaces
Figure 7-3
A0
B0
PL0 PL1 PL2 PL3
PL8 PL9
Every MSC is paired with a PLIM through the midplane of the line card chassis (see
use of separate PLIMs provides the ability to choose a number of interfaces and port densities, such as
OC-192 or OC-48, and allows an MSC to be removed and replaced without having to disturb the cabling
that is connected to the PLIM.
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
7-8
Chapter 7
MSC and PLIMs in a Single-Chassis System
PLIM side of chassis
A1 A2 AM0
B1 B2 AM1
PL4 PL5 PL6 PL7
PL PL PL PL PL PL
10 11 12 13 14 15
RP Redundancy and Hardware Administration on Cisco IOS XR Software
MSC side of chassis
FT0 (fan tray)
SM0-
7 6 5 4
SM3
SM4-
15 14 13 12
SM7
FT1
3 2 1 0
11 10 9 8
Figure 7-4). The