Chapter 1 Cisco CRS-1 Carrier Routing System
The Cisco CRS-1 8-Slot Line Card Chassis
The Cisco CRS-1 8-Slot Line Card Chassis
The Cisco CRS-1 8-slot line card chassis is the main component of the Cisco CRS-1. The chassis is a mechanical enclosure that contains a chassis midplane. The midplane holds the system modular services cards (MSCs), their associated physical layer interface modules (PLIMs), and switch fabric cards. The chassis is mounted in a 19-inch equipment rack. See the “Equipment Rack Considerations” section on page 4-3for more information.
This section describes the main components of the Cisco CRS-1 8-slot line card chassis. It primarily identifies the components that are considered field-replaceable units (FRUs), but where additional detail is useful identifies subassemblies that are not field replaceable.
The following figures show the Cisco CRS-1 8-slot line card chassis from both the front (PLIM) and rear (MSC) sides.
Figure 1-1 Front (PLIM) View of the 8-Slot Line Card Chassis
CISCO CRS-1
LINECARD CHASSIS
OT | LLM | CB | AC | |
| | TMP | FAIL | FLT POWEROK |
OT | LLM | CB | AC | |
| | TMP | FAIL | FLT POWEROK |
122775
1 | Cable management bracket | 4 | Air filter |
| | | |
2 | Chassis vertical mounting brackets | 5 | Power modules |
| | | |
3 | PLIM and RP slots (RPs in middle 2 slots) | | |
| | | |
Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide
