Cisco 12006 series Istruzioni operative e di sicurezza

CHAPTER

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Product Overview

This chapter provides an overview of the Cisco 12006 and Cisco 12406 series

routers. It contains physical descriptions of the router hardware and major

components, and functional descriptions of the hardware-related features.

Introduction

The routers described in this guide are part of the Cisco 12006 and Cisco 12406

series routers and include:

•The original Cisco 12006 and Cisco 12406 series routers.

•The Cisco 12006 and Cisco 12406 enhanced series routers. The enhanced

series of routers use higher capacity power supplies, a more powerful blower

module, and have a new front door.

Note Most illustrations are shown without the new front door for clarity.

Chapter 1 Product Overview

Product Description

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These two router models are differentiated by the switching capacity of the switch

fabric installed in the router:

•Cisco 12006 Router—2.5-Gbps switch fabric

•Cisco 12406 Router—10-Gbps switch fabric

Other than their various capacities, these routers are almost identical. Differences

between each router are described unless otherwise noted, all information in this

publication applies to all routers.

Product Description

The Cisco 12006 and Cisco 12406 routers, shown in Figure 1-1, are members of

the Cisco 12000 series router family. These routers are aimed at scaling the

Internet and enterprise backbones to speeds of 155 Mbps (OC-3/STM-1),

622 Mbps (OC-12/STM-4), 2.4 Gbps (OC-48/STM-16), and 10 Gbps

(OC-192/STM).

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Chapter 1 Product Overview

Product Description

Figure 1-1 Cisco 12006 and Cisco 12406 router (Front View)

With a chassis height of 18.5 inches (46.9 cm), four Cisco 12006 and

Cisco 12406 routers can be installed in a single standard 7-foot (2.15-m)

equipment rack.

Cisco 12006 and Cisco 12406 routers support system software downloads for

most Cisco IOS software upgrades, which enables you to remotely download,

store, and boot from a new Cisco IOS image.

1Line card slots (five) 5Alarm card slots (two)

2RP slot 6Power module bays (two)

3Blower module 7CSC slots (two)

4SFC slots (three) 8Cable-management bracket

101344

SLOT

-0

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8 3

1 2

Chapter 1 Product Overview

Product Description

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Cisco 12006 and Cisco 12406 routers have the following key features:

•Route Processor (RP)—Slot 5 (bottom slot) is the recommended slot for the

first RP. When the router is equipped with a redundant RP, it can be installed

in any of the five regular line card slots.

•Line Cards—Up to five OC-192 line cards, four if redundant RPs are

installed. These slots support the online insertion and removal (OIR) feature

so installed cards are hot-swappable: A failed card can be removed and

replaced with the router powered on.

•Clock and Scheduler Cards (CSCs) and Switch Fabric Cards (SFCs)—Two

dedicated hot-swappable slots for CSCs; three dedicated hot-swappable slots

for SFCs.

Note The Cisco 12006 Router uses 2.5-Gbps switch fabric; the

Cisco 12406 Router uses 10-Gbps switch fabric. You cannot mix

2.5-Gbps switch fabric cards and 10-Gbps switch fabric cards in a

chassis. The router will not operate with a mix of switch fabric card

types.

Note When operating your router with a single CSC, the second CSC slot

must have a CSC blank filler (MAS-GSR6-CSCBLNK=) installed to

ensure EMI compliance.

•Two dedicated alarm card slots (for 1+1 redundancy)

•Alarm and Illumination—Alarm and illumination for operating ranges in the

card cage, clock and scheduler card, and switch fabric card bays.

•Two hot-swappable AC-input power supplies or DC-input power entry

modules (PEMs).

Note When operating your router on a single AC-input power supply or

DC-input PEM, the second power module bay must have a blank filler

(MAS-GSR-PWRBLANK=) installed to ensure EMI compliance.

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Chapter 1 Product Overview

Product Description

•All power modules and other field replaceable units (FRUs), except for the

air blower module and the power distribution unit (PDU), can be removed

from the front of the chassis.

•All source power connections are located at the rear of the chassis on the

PDU. (See Figure 1-2.)

•Enhanced models have a new stylish front door that hides router cabling. The

door can be installed to open from the right side or left side to give you total

flexibility.

•Network Equipment Building Systems—Cisco 12006 and Cisco 12406

routers comply with the Network Equipment Building System (NEBS)

Criteria Level 3 requirements defined in SR-3580 for flammability,

structural, and electronics compliance.

•Electromagnetic Compatibility and Electrostatic Discharge Compliant—

Cisco 12006 and Cisco 12406 routers comply with emissions, immunity, and

electrostatic discharge (ESD) standards for both product and packaging.

•Bonding and Grounding—Bonding and grounding for safety, circuit

protection, noise currents, reliability, and operations compliance.

•Environmental Monitoring—Cisco 12006 and Cisco 12406 router complies

with environmental monitoring standards for operating temperature and

humidity, as well as handling temperature and humidity (except for heat

dissipation).

•Shock and Vibration—Cisco 12006 and Cisco 12406 routers have been

shock- and vibration-tested for operating ranges, handling, and earthquake

standards to NEBS (Zone 4 per GR-63-Core). These tests have been

conducted in earthquake environment and criteria, office vibration and

criteria, transportation vibration and criteria, and packaged equipment shock

criteria.

Chapter 1 Product Overview

Product Description

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Figure 1-2 Cisco 12006 and Cisco 12406 router (Rear View)

•Fiber Cable Management—Fiber cable management with support for

high-density fiber Fast Ethernet (FE) ports.

•Current 1.275-inch pitch line cards will fit in the line card cage with the

addition of a front panel adapter cover. The line card adapter cover is included

with the 1.275-inch line card.

1Blower module 4Air exhaust vents

2Blower module LEDs 5PDU (behind Blower module; AC

PDU shown)

3Blower module handle ––

101114

HIGH SPEED BLOWER

2 5

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Chapter 1 Product Overview

Physical and Functional Description

The main physical components of Cisco 12006 and Cisco 12406 routers and their

functions are described in the following sections:

•Chassis, page 1-7

•Multigigabit Crossbar Switch Fabric, page 1-10

•Maintenance Bus, page 1-13

•Route Processors, page 1-15

•Line Cards, page 1-33

•Alarm Cards, page 1-35

•Power Subsystems, page 1-37

•Blower Module, page 1-47

•Air Filters, page 1-49

•Cable-Management System, page 1-50

Chassis

The Cisco 12006 and Cisco 12406 router chassis is an enclosure that consists of

two integral card cages and two power module bays. (see Figure 1-1.)

RP and Line Card Slots

The RP and line card cage has six user-configurable slots that support one RP and

up to five line cards. Network interfaces reside on the line cards that connect the

switch fabric of the router to the external networks. For more information about

the role of the RP, see the “Route Processors” section on page 1-15. For more

information about the role of the line cards, see the “Line Cards” section on

page 1-33.

Note Cisco 12006 and Cisco 12406 routers use line cards that are compatible with

other Cisco 12000 series routers.

Chapter 1 Product Overview

Chassis

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Switch Fabric Card Slots

The switch fabric circuitry resides in five fabric card slots: two for CSCs and three

for SFCs. (See Figure 1-1.) For more information about the role of the switch

fabric circuitry, see the “Multigigabit Crossbar Switch Fabric” section on

page 1-10.

Alarm Card Slots

Cisco 12006 and Cisco 12406 routers are equipped with two alarm cards. These

cards are positioned beside one another and occupy two card slots directly under

the CSC slots. (See Figure 1-1.) For more information about the role of the alarm

cards, see the “Alarm Cards” section on page 1-35.

Note The two alarm cards occupy slots under the two CSC slots in the CSC card cage,

but are not part of the switch fabric.

Chassis Backplane

All of the card cages are tied together electrically through a passive system

backplane in the back of the chassis. Nearly all of the wiring and circuitry in the

chassis is contained within or connected to the chassis backplane. The chassis

backplane distributes DC power to all of the cards in the chassis as well as the

blower module, and provides the physical communication pathway between

cards, both for network data and system communication across the internal system

maintenance bus (MBus).

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Chapter 1 Product Overview

Chassis

Power

Because a Cisco 12006 or Cisco 12406 Router can be configured with either an

AC-input power system or a DC-input power system, the power module bays will

accept either AC-input power supply modules or DC-input PEMs. For more

information about the power subsystems, see the “Power Subsystems” section on

page 1-37.

Caution To ensure that the chassis configuration complies with the required power

budgets, use the on-line power calculator. Failure to properly verify the

configuration may result in an unpredictable state if one of the power units fails.

Contact your local sales representative for assistance.

Cooling

Cisco 12006 and Cisco 12406 routers are equipped with a blower module to

distribute air within the chassis. The blower module is a removable module

located on the rear of the chassis. (See Figure 1-2.) For more information about

the blower module, see the “Blower Module” section on page 1-47.

Chapter 1 Product Overview

Multigigabit Crossbar Switch Fabric

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Multigigabit Crossbar Switch Fabric

Cisco 12006 and Cisco 12406 router switch fabric circuity provides synchronized

gigabit-speed interconnections for the line cards and the RP. The switch fabric

circuitry resides in five fabric card slots: two for CSCs; three for SFCs. (See

Figure 1-3.)

Figure 1-3 Clock and Scheduler and Switch Fabric Card Bays

Switch Fabric Card Types

The CSCs are installed in the half-width slots labeled CSC 0 and CSC 1 on the

lower left side of the chassis, located directly beneath the RP and line card cage

and directly above the alarm card bays. The three SFCs are installed in the

half-width slots labeled SFC 0, SFC 1, and SFC 2 on the lower right side of the

chassis.

Note To operate, Cisco 12006 and Cisco 12406 routers must have at least one CSC card

installed, in addition to SFC and alarm cards.

The CSC contains the following functionality:

SLOT-0

GIGABIT ROUTEPROCESSOR

SLOT-1

COLL

LINK

RJ-45

MII

RESET

AUX

EJECT

CONSOLE

57084

SFC

CSC

SFC

Alarm

cards (2)

CISCO 12000

SERIES

GIGABIT SWITCHROUTER

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