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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Chapter1 Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Overview
Chassis Cable Management
Figure 1-7 shows the slot numbers on the rear (MSC) side of the Cisco CRS 8-slot line card chassis.
Figure1-7 Line Card Chassis Slot Numbers—Rear (MSC) Side
As shown, the slot numbers on the MSC side of the chassis include:
•Fan tray 0 and fan tray 1
•Card cage, including:
–
Eight line card slots (0, 1, 2, 3, 4, 5, 6, 7)
–
Four half-height switch fabric card slots (SM0, SM1, SM2, and SM3)
•Power shelf A and Power shelf B
The MSC slot numbers are reversed from the PLIM slot numbers on the other side of the chassis.
Because an MSC mates with its associated PLIM through the midplane, MSC slot 0 is on the far right
side of the chassis looking at it from the rear (MSC) side.
PLIM slot 0 is on the far left side of the chassis, looking at if from the front (PLIM) side. MSC slot 0
and PLIM slot 0 mate with each other through the midplane, and so do all other MSC and PLIM slots (0
through 7).
Chassis Cable Management The Cisco CRS 8-slot line card chassis has cable management features for the front (PLIM) side of the
chassis, just above the card cage. The horizontal cable management trays have a special telescoping
feature that allows them to be extended when the chassis is upgraded with higher-density cards. This
extension also helps when installing the cables in the chassis.
Note Do not install the front cover on the chassis when the telescoping feature is in use.
FAN 0
FAN 1
7
6
5
4
SM 0 SM 2
SM 1 SM 3
3
2
1
0
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Power B Power A