Cisco Systems CRS-1 User Manual 2

Cisco CRS-1Carrier Routing System 8-Slot Line Card Chassis Site

March 2008

Americas Headquarters

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Planning Guide

800 553-NETS (6387)

Text Part Number: OL-5802-06

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• Turn the television or radio antenna until the interference stops.

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• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)

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Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

IMPLIED, INCLUDING, WITHOUT

Preface v

CHAPTER

1 Cisco CRS-1 Carrier Routing System 1-1

The Cisco CRS-1 8-Slot Line Card Chassis 1-2

Chassis Components 1-3 Chassis Slot Numbers 1-4

2 Power and Cooling 2-1

Chassis Power System 2-1

General Power and Grounding Requirements 2-2

DC Power Requirements 2-3

DC Input Power and Ground Cables 2-3

AC Power Requirements 2-6

AC PDU Wiring 2-7

Supplemental Bonding and Grounding 2-9

Chassis Airflow 2-10

Facility Cooling Requirements 2-10

3 Technical and Environmental Specifications 3-1

CHAPTER

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Line Card Chassis Specifications 3-1

Equipment Rack Specifications 3-2

Environmental Specifications 3-6

4 Site Planning Considerations 4-1

Basic Site and Installation Planning 4-1

Tools Required for Installation 4-2

Equipment Rack Considerations 4-3

Aisle Spacing and Maintenance Access Floor Plan 4-4

Dimensions of the 8-Slot Line Card Chassis 4-5 Front and Rear Clearances 4-5

Power and Cooling Requirements 4-6

System Console 4-6

Cable Management 4-6

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

iii

Contents

Route Processor Cables 4-7 PLIM Interface Cables 4-7 Custom Cables 4-7

Noise Control 4-8

Cisco Installation Services 4-8

System Testing, Certification, and Warranties 4-8

APPENDIX

NDEX

A Site Planning Guidelines A-1

Site Planning Checklist A-1

Preliminary Site Survey A-2

B Product IDs for the Cisco CRS-1 8-Slot Line Card Chassis B-1

Cisco CRS-1 8-Slot Line Card Chassis Component Product IDs B-1

Optional MSC, PLIM, SIP, and SPA Product IDs B-3

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Preface

This site planning guide describes how to plan and prepare your site facilities for the installation of a Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis (also referred to in this document as the “Cisco CRS-1 8-slot line card chassis”). The guide provides a brief description of the chassis and its components, and basic site facilities requirements.

This guide describes all power, cooling, and environmental specifications to consider before ordering and installing the Cisco requirements, such as floor space, weight requirements, receiving and staging, and installation information to help you plan the site where the routing system will be installed.

CRS-1 8-slot line card chassis. This guide also describes site facilities

Note The installation of a Cisco CRS-1 8-slot line card chassis may require space, floor loading, power, and

cooling modifications to a facility; therefore, you should plan the site well in advance of the scheduled delivery of the system.

Audience

This guide is for customers who must plan the facilities for the site where the 8-slot line card chassis is to be installed. It should be used with Cisco Systems site planning coordinators and site inspections, well in advance of the delivery of the routing system.

Document Organization

This guide contains the following chapters and appendixes:

• Chapter 1, “Cisco CRS-1 Carrier Routing System,” provides an overview of the routing system and

its main components.

• Chapter 2, “Power and Cooling,” provides an overview of the chassis power and cooling systems,

and describes the power and grounding requirements for the routing system.

• Chapter 3, “Technical and Environmental Specifications,” provides technical and environmental

specifications.

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• Chapter 4, “Site Planning Considerations,” describes the site facilities requirements to plan for

before you receive and install the routing system.

• Appendix A, “Site Planning Guidelines,” provides checklists for the site preparation process.

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

• Appendix B, “Product IDs for the Cisco CRS-1 8-Slot Line Card Chassis,” provides information

about how to order the Cisco CRS-1 8-Slot Line Card Chassis components.

Document Conventions

This guide uses the following conventions:

Caution Means reader be careful. You are capable of doing something that might result in equipment damage or

loss of data.

Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in

this manual.

Warning Definition

Preface

Warning

IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device.

SAVE THESE INSTRUCTIONS

See the Regulatory Compliance and Safety Information for the Cisco CRS-1 Carrier Routing System for translations of warnings and information about the compliance and safety standards with which the Cisco

Statement 1071

CRS-1 8-slot line card chassis system conforms.

Cisco CRS-1 Carrier Routing System

Tip The installation of a CRS-1 8-slot line card chassis may require space, floor loading, power, and cooling

modifications to a facility; therefore, you should plan the site well in advance of the scheduled delivery of the system.

The Cisco CRS-1 Carrier Routing System replaces much of the equipment in service provider points of presence (POPs) today. The routing systems are built around a scalable, distributed three-stage switch fabric and a variety of line card (packet) interfaces. These packet interfaces are located on modular services cards (MSCs) and their associated physical layer interface modules (PLIMs), which are effectively cross-connected to each other through the switch fabric.

CRS-1 8-slot line card chassis. This guide also describes site facilities

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• The Cisco CRS-1 8-slot line card chassis is a half-height, rack-mounted version of the 16-slot

chassis. It is a highly scalable routing system that provides 640 gigabits per second (Gbps) of routing capacity and supports up to 8 MSCs. The chassis installs in a 19-inch equipment rack.

The Cisco CRS-1 8-slot line card chassis can be installed in colocation facilities, data centers, and many Tier II and Tier III locations. The routing system consists of a single rack-mounted chassis that contains the system components:

• Modular services cards (MSCs), also called line cards (up to eight)

• Physical layer interface modules, or PLIMs (up to eight, one for each MSC)

• Route processor (RP) cards (up to two)

• Switch fabric cards (four required)

• A chassis midplane that connects MSCs to their PLIMs and to switch fabric cards

The Cisco CRS-1 8-slot line card chassis has its own power and cooling subsystems.

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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

page 4-3 for 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

“Equipment Rack Considerations” section on

Chapter 1 Cisco CRS-1 Carrier Routing System

CISCO CRS-1

S E

R I E

I N

S S

I S

O T

L L

C B

A C

F L

T T M

O T

L L

C B

A C

F L

T T M

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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)

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1-2

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Chapter 1 Cisco CRS-1 Carrier Routing System

Figure 1-2 Rear (MSC) View of the 8-Slot Line Card Chassis

The Cisco CRS-1 8-Slot Line Card Chassis

1 Upper fan tray (beneath cover) 4 MSC slots

2 Chassis vertical mounting brackets 5 Lower fan tray

3 Switch fabric card (half-height) slots 6 Power distribution units (PDUs)

Chassis Components

The Cisco CRS-1 8-slot line card chassis contains the following components:

• As many as eight modular services cards (MSCs), also called line cards, and eight physical layer

interface modules (PLIMs). The MSC and PLIM are an associated pair of cards that mate through the chassis midplane. The MSC provides the forwarding engine for Layer 3 routing of user data, and the PLIM provides the physical interface and connectors for the user data.

The MSC can be associated with several different PLIMs, which provide different interface speeds and technologies. The available PLIMs are as follows:

–

1-port OC-768c/STM-256c packet-over-SONET (POS). Available with short-reach (SR) optics.

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–

4-port OC-192c/STM-64c POS/DPT. Available with long-reach (LR), intermediate-reach (IR), short-reach (SR), and very-short-reach (VSR) optics.

–

OC-48c/STM-16c POS/DPT, configurable with 1 to 16 ports. Available with long-reach (LR) and short-reach

(SR) optics. This PLIM supports pluggable optics.

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

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The Cisco CRS-1 8-Slot Line Card Chassis

–

10-Gigabit Ethernet (GE. Available in long-reach (LR) optics. This PLIM supports pluggable optics, and can be configured with 1 to 8 ports.

–

Cisco CRS-1 SPA Interface Processor-800. Occupies one physical-layer-interface-module (PLIM) slot on the Cisco CRS-1 16- and 8-Slot Line Card Chassis. Supports six normal-height SPAs or three double-height SPAs or any combination in between.

• A chassis midplane. The midplane connects MSCs to their associated PLIMs and allows an MSC to

be removed from the chassis without having to disconnect the cables that are attached to the associated PLIM. The midplane distributes power, connects the MSCs to the switch fabric cards, and provides control plane interconnections. The midplane is not field replaceable by the customer.

• One or two route processor cards (RPs). The RPs provide the intelligence of the system by

functioning as the line card chassis system controller and providing route processing. Only one RP is required for system operation. For redundant operation, you can order a second, redundant RP as an option (CRS-8-RP/R). When two RPs are used, only one RP is active at a time. The second RP acts as a “standby” RP, serving as a backup if the active RP fails.

The RP also monitors system alarms and controls the system fans. LEDS on the front panel indicate active alarm conditions.

• Upper and lower fan trays. The fans pull cool air through the chassis. A removable air filter is

located below the PLIM card cage at the front of the chassis. Each fan tray contains three fans.

Chapter 1 Cisco CRS-1 Carrier Routing System

• Four half-height switch fabric cards. These cards provide the three-stage Benes switch fabric

(S1/S2/S3) for the routing system. The switch fabric performs the cross-connect function of the routing system, connecting every MSC (and its associated PLIM) with every other MSC (and its associated PLIM) in the system.

The switch fabric receives user data from one MSC and PLIM pair and performs the switching necessary to route the data to the appropriate egress MSC and PLIM pair. The switch fabric is divided into eight planes that evenly distribute the traffic across the switch fabric. Each switch fabric card implements two planes of the switch fabric.

• A power system that provides redundant power to the chassis. The power system consists of two

or DC power distribution units (PDUs) and two AC rectifier modules or two DC power entry modules (PEMs), one for each PDU. Each PDU supplies input power to a rectifier or PEM, which in turn provides processed power to the chassis. Each DC and AC power module contains a removable air filter, located on the back of the module.

The PLIM side of the chassis is considered the front of the chassis, where user data cables attach to the PLIMs and cool air enters the chassis. The MSC side, which is where warm air is exhausted, is considered the rear of the chassis.

Chassis Slot Numbers

The following figure shows the slot numbers on the front and back of the chassis.

1-4

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

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Chapter 1 Cisco CRS-1 Carrier Routing System

Figure 1-3 Cisco CRS-1 8-Slot Line Card Chassis Slot Numbers

The Cisco CRS-1 8-Slot Line Card Chassis

FAN 0

0123RP 0

RP 14567

7654SM 0 SM 2

SM 1 SM 33210

FAN 1

122777

As shown, the front (PLIM) side of the chassis has the following card slots:

• Eight PLIM slots (left to right: 0, 1, 2, 3...4, 5, 6, 7)

• Two route processor card slots (RP0 and RP1)

The rear (MSC) side of the chassis has the following card slots:

• Eight MSC slots (left to right: 7, 6, 5, 4...3, 2, 1, 0)

• Four half-height switch fabric card slots (SM0, SM1, SM2, and SM3)

Notice that the PLIM and MSC slot numbers are reversed. This reversal is because each MSC mates with its associated PLIM through the midplane. For example, the PLIM in slot 0 (far left on the chassis front) mates through the midplane with the MSC in slot 0 (far right on the chassis rear).

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Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

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The Cisco CRS-1 8-Slot Line Card Chassis

Chapter 1 Cisco CRS-1 Carrier Routing System

1-6

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

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CHA PTER

Power and Cooling

This chapter describes the Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis power and cooling systems. It also provides the power and grounding and cooling requirements for the installation site to help you plan the site facilities for the system. The Cisco Line Card Chassis System Description provides detailed information about these components.

This chapter contains the following sections:

• Chassis Power System

• General Power and Grounding Requirements

• DC Power Requirements

• AC Power Requirements

• Supplemental Bonding and Grounding

• Chassis Airflow

• Facility Cooling Requirements

CRS-1 Carrier Routing System 8-Slot

Chassis Power System

The 8-slot line card chassis can be either DC or AC powered. Each type of power system (DC or AC) provides power to chassis components. The chassis power system is made up of two input power distribution units (PDUs) and two power modules, one in each PDU. Each PDU is connected to a different power source. Input power enters the PDU and is passed to the power module, which provides 7,500 watts of power to the components in the chassis. Each power module has its own circuit breaker.

The Cisco CRS-1 8-slot line card chassis uses the AC power PDUs to provide the two types of AC wiring schemes (Wye and Delta). Each chassis has two PDUs, and each PDU takes one supply which, in the case of AC, has three internal zones such that two three-zone power supplies provide three redundant power zones (see the Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis System Description for more information).

Because each PDU is connected to a separate and independent power source, the power system provides 2N power redundancy. During normal operation when both power sources are operational, both sets of PDUs and power modules function together to power the chassis. However, if a power sources fails, the other power source provides the other PDU and power module with enough input power to power the chassis. This 2N power redundancy enables the routing system to operate despite the power failure.

Chassis input power requirements are as follows:

• A DC-powered chassis requires 8,000 watts of DC input power.

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General Power and Grounding Requirements

• An AC-powered chassis requires 8,750 watts of AC input power.

Note These power requirements are for a fully loaded chassis with eight PLIMs. A chassis with six or

seven

PLIMs uses slightly less power. However, it is a good idea to allocate this much power for each

chassis to ensure that enough power is available for future system expansion.

See the Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis System Description for detailed information about how each power system operates and distributes power to components in the chassis.

General Power and Grounding Requirements

This section describes the power and grounding requirements you must consider when planning the site facilities for the routing system. In addition, see the the “AC Power Requirements” section on page 2-6 for additional information about the power requirements for your chassis type.

“DC Power Requirements” section on page 2-3 or

Chapter 2 Power and Cooling

Note A qualified electrician should review the information in these sections to ensure that the installation site

meets these requirements. For larger system configurations, you may want to consult a facilities electrical expert to understand the load that the routing system may put on the facility power plant.

• Installation of the routing system must follow national and local electrical codes:

• In the United States: United States National Fire Protection Association (NFPA) 70 and United

States National Electrical Code (NEC).

• In Canada: Canadian Electrical Code, part I, CSA C22.1.

• In other countries: International Electrotechnical Commission (IEC) 60364, parts 1 through 7.

• Two separate and independent AC or DC power sources are needed to provide 2N redundancy for

system power. Each power source requires its own circuit breaker.

• Each power source must be providing clean power to the site. If necessary, install a power

conditioner.

• The site must provide short-circuit (over-current) protection for devices.

• Proper grounding is required at the site to ensure that equipment is not damaged by lightning and

power surges. In addition:

• For AC-powered systems, a grounding-type AC power outlet is required.

• For DC-powered systems, each DC PDU requires a connection to earth ground.

• When planning the power for the site, be sure to include the power requirements for any external

terminals and test equipment you will use with your system.

2-2

Note Be sure to review the safety warnings in Regulatory Compliance and Safety Information for the Cisco

CRS-1 Carrier Routing System before attempting to install the routing system.

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

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Chapter 2 Power and Cooling

DC Power Requirements

A DC-powered line card chassis contains two DC-input power distribution units (PDUs) and two DC power entry modules (PEMs). Each DC PDU is connected to three DC power inputs and contains a single 7500-watt DC PEM that is field replaceable. Input DC power enters the PDU and is passed to the PEM, which provides power to the components in the chassis. Each PEM has its own circuit breaker.

In addition to the requirements described in the “General Power and Grounding Requirements” section

on page 2-2, DC input power requirements are as follows:

• A DC-powered chassis requires 8,000 watts of DC input power.

• Each DC PDU requires three VDC inputs of –48/–60 VDC (nominal). The PDU accepts input

power in the range –40.5 to –75 VDC.

• A DC-powered chassis requires access to the “A” and “B” power buses at the central office (CO).

This dual connectivity provides 2N power redundancy in case a power source fails.

–

One PDU should be connected to three –48/–60 VDC inputs from the central office “A” power bus.

–

The other PDU should be connected to three –48/–60 VDC inputs from the “B” power bus.

DC Power Requirements

• Required input current is as follows:

–

60 amps at nominal input voltage (–48/–60 VDC)

–

66 amps at low input voltage (–40.5 VDC).

• All power connection wiring must conform to the rules and regulations in the National Electrical

Code

(NEC) and any local codes. In addition, make sure that the wiring conforms to any internal

requirements at the installation site.

• Each DC power source must comply with the safety extra-low voltage (SELV) requirements in

60950-1, CSA-C22.2 No. 60950-1, EN60950-1, AS/NZS 60950, and IEC60950-1.

• A DC-powered system should be installed in a restricted access area in accordance with the

National

• All components in the area where DC input power is accessible must be properly insulated.

• A readily accessible two-pole disconnect device must be incorporated in the fixed wiring, unless it

Electric Code, ANSI/NFPA 70.

is possible to rely on the identification of the power return conductor that is earth-grounded in the

DC power system.

DC Input Power and Ground Cables

Each PDU has three sets of double-stud terminals (RTN, –48V/–60V) for connecting DC input power. To

provide 2N power redundancy, one PDU should be connected to the central office “A” power bus

and the other PDU should be connected to the “B” power bus.

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The requirements for the DC input power and ground connections are as follows:

• For DC input power cables, select the appropriate wire gauge based on the National Electrical

Code

(NEC) and local codes for 60-amp service at nominal DC input voltage (–48/–60 VDC).

Three

pairs of cable leads, source DC (–) and source DC return (+), are required for each PDU.

These

cables are available from any commercial cable vendor. All input power cables for the chassis

should have the same wire gauge and cable lengths should match within 10 percent of deviation.

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

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+ 37 hidden pages

Cisco Systems CRS-1 User Manual 2

CONTENTS

Preface

Cisco CRS-1 Carrier Routing System

The Cisco CRS-1 8-Slot Line Card Chassis

Chassis Components

Chassis Slot Numbers

Power and Cooling

Chassis Power System

General Power and Grounding Requirements

DC Power Requirements

DC Input Power and Ground Cables