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This chapter provides an overview of the Cisco CRS Carrier Routing System 16-Slot Line Card Chassis Enhanced Router, referred to as LCC in this document. It contains the following sections:
The 16 slots in the LCC can contain the following:
Note | MSCs, FPs, and LSPs are referred to as line cards. |
Each slot has the capacity of up to 400 gigabits per second (Gbps) ingress and 400 Gbps egress, for a total routing capacity per chassis of 12800 Gbps or 12.8 terabits per second (Tbps). (A terabit is 1 x 1012 bits or 1000 gigabits.)
The LCC supports 40G, 140G, and 400G fabric cards, as follows:
A mixture of 40G, 140G, and 400G fabric cards is not supported except during migration.
Note | Throughout this document, the generic term Cisco CRS Carrier Routing system refers to the Cisco CRS-1, Cisco CRS-3, and Cisco CRS-X Carrier Routing Systems, unless otherwise specified. |
The chassis has an integrated rack and does not require an external rack. It is bolted to the facility floor. It contains its own power and cooling systems. Power systems are available using AC or DC power.
The following figure shows the front view of the LCC with AC and DC power shelves installed.
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DC power shelves (two installed) |
2 |
AC power shelves (two installed) |
The following figure shows the rear view of the LCC.
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DC power shelves (two installed) |
2 |
AC power shelves (two installed) |
This section lists the main components of the LCC. 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 line card chassis contains:
Note | For a complete list of available PLIMs, consult your Cisco sales representative or visit: http://www.cisco.com |
Note | A chassis may not be populated with a mix of RP and PRP cards. Both route processor cards should be of the same type (RP or PRP). |
Note | The LCC supports either 40G fabric cards (FC/S cards), 140G fabric cards (FC-140/S cards), or 400G fabric cards (FC-400/S cards). An LCC with a mix of 40G, 140G, and 400G fabric cards is not a supported mode of operation. Such a mode is temporarily allowed only during the upgrade process. |
The main features of all Cisco CRS Series routing systems include:
This section provides an overview of the physical chassis characteristics:
A single-shelf (standalone) system consists of a single LCC. A multishelf system includes up to nine LCCs and connects up to four switch fabric card chassis.
This section identifies the locations of and slot numbers for major cards that plug into the chassis.
The following figure shows the chassis slot numbers on the PLIM side of the LCC.
As shown in the figure, the components on the front (PLIM) side of the chassis include:
The following figure shows the chassis slot numbers on the rear (MSC) side of the LCC.
As shown in the figure, the components on the rear (MSC) side of the chassis include:
The MSC slot numbers on the rear of the chassis are reversed from the PLIM slot numbers on the front side of the chassis. A mated MSC and PLIM are slot specific and mated through the midplane. The MSC slot 0, on the far right side of the chassis looking at it from the rear (MSC) side, is mated with the PLIM slot 0, on the far left side of the chassis looking at it from the front (PLIM) side. All other MSC and PLIM slots (2 through 15) are mated via matching slot numbers through the midplane also.
The LCC has cable management features for both the front (PLIM) and rear (MSC) sides of the chassis. The PLIM side has horizontal cable management features above both card cages. 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 feature also helps when installing the cables in the chassis. Ensure that the horizontal cable management trays are pushed in before closing the front door.
There are two types of vertical cable troughs as part of the chassis cable management: standard width and wider width.
The MSC side of the chassis has one cable management system above the lower card cage (in the middle of the chassis). These cable management trays are not telescoping because there is a preset amount of fiber cabling to be managed.
This section contains information about the exterior cosmetic components.
The LCC is shipped with exterior cosmetic components for the front (PLIM) side and rear (MSC) side of the chassis.
Note | Some exterior cosmetic components are not required to be installed. |
The following figure shows the exterior cosmetics for the front (PLIM) side of a chassis.
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Upper grille support |
5 |
Doors |
2 |
Unistruts |
6 |
Upper grille |
3 |
Bracket for lower grille |
7 |
Vertical cable troughs |
4 |
Lower grille |
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The following figure shows the exterior cosmetics on the rear (MSC) side of the LCC.
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Vertical cable troughs |
4 |
Doors |
2 |
Bracket for optional rear kick panel |
5 |
Upper air grille |
3 |
Rear kick panel (optional, orderable separately) |
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The following figure shows the exterior cosmetics for the front (PLIM) side of an optional wide duct system.
1 |
Upper grille support |
5 |
Doors |
2 |
Unistruts |
6 |
Upper grille |
3 |
Bracket for lower grille |
7 |
Wide vertical cable troughs |
4 |
Lower grille |
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Before you perform any LCC installation procedures, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment.
Note | Although power shelves may be installed or removed without powering down the system, for safety purposes we recommend that you power down the system before you install or remove a power shelf. |
The following guidelines are for your safety and to protect equipment. The guidelines do not include all hazards. Be alert.
Note | Review the safety warnings listed in Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System before installing, configuring, or troubleshooting any installed card. |
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures. We recommend use of an ESD-preventive strap whenever you handle network equipment or one of its components.
Following are guidelines for preventing ESD damage: