Bridge/Router Installation Guide

1-5

Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide

OL-10971-07

Chapter 1 Overview

Chassis Slot Numbers

This section identifies the location and slot numbers for major cards and modules (primarily the

field-replaceable units) that plug into the Cisco CRS-1 4-slot line card chassis.

Figure 1-3 shows the slot numbering on the front (PLIM) side of the Cisco CRS-1 4-slot line card

chassis.

Figure 1-3 Cisco CRS-1 4-Slot Chassis Slot Numbering—Front (PLIM) Side

As shown in Figure 1-3, the Cisco CRS-1 4-slot line card chassis numbers on the PLIM side of the

chassis include the card cage with the following assignments:

• Four MSC slots (left to right, 0, 1, 2, 3)

• Four PLIM slots (left to right, 0, 1, 2, 3)

• Two route processor card slots, RP0 and RP1

Figure 1-4 shows the slot numbers on the rear (Switch Fabric Card) side of the Cisco CRS-1 4-slot line

card chassis.

1 MSC slot 0 7 PLIM slot 2

2 MSC slot 1 8 PLIM slot 3

3 MSC slot 2 9 RP slot (RP0)

4 MSC slot 3 10 RP slot (RP1)

5 PLIM slot 0 11 Air intake

6 PLIM slot 1 12 Power shelf (AC or DC)

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