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Cisco Systems 12406 series, 12006 series manual 1-48, Top view, 17 Internal Air Flow Top View

Models: 12006 series 12406 series

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Figure 1-17 Internal Air Flow (Top View)

Chapter 1 Product Overview

Blower Module

If the air temperature inside the RP and line card cage rises, the system environmental monitor shuts down all internal power to prevent equipment damage from excessive heat.

If the system detects that one of three fans within a blower module has failed, it displays a warning message on the console screen. If multiple fans fail, the system shuts down to prevent equipment damage.

Figure 1-17 Internal Air Flow (Top View)

Air exhaust

Blower module

Room air

Air filter

Top view

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The two LEDs on the blower module provide a visual indication of blower module status. Both LEDs are visible on the blower module from the rear of the chassis.

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
1-48	OL-11497-03

Page 48

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Cisco Systems 12406 series, 12006 series manual 1-48, Top view, 17 Internal Air Flow Top View

Contents

Introduction C H A P T E RProduct Overview Product Description Line card slots five Cisco 12006 and Cisco 12406 routers have the following key features 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 Blower module Blower module LEDs Blower module handle Chassis, page Multigigabit Crossbar Switch Fabric, page Maintenance Bus, page Route Processors, page Line Cards, pageAlarm Cards, page Power Subsystems, page Blower Module, page Physical and Functional DescriptionSwitch Fabric Card Slots Alarm Card SlotsChassis Backplane Power CoolingMultigigabit Crossbar Switch Fabric Switch Fabric Card Types1-10 Nonredundant and Redundant System Configurations 1-11Chapter 1 Product Overview Multigigabit Crossbar Switch Fabric OL-11497-03Switch Fabric Switching Capacity and Router Type Switch Fabric Redundancy1-12 Maintenance Bus Power-Up/Down ControlDevice Discovery 1-13Diagnostics Environmental Monitoring and AlarmsCode Download 1-14Route Processors Route Processor Functions1-15 Route Processor Types Gigabit Route ProcessorGigabit Route Processor, page Performance Route Processor, page 1-161-17 Sensors-Air-temperature sensors for environmental monitoring1-18 Chapter 1 Product Overview Route ProcessorsGRP Layout LED displaysGRP Memory Components DRAMType SizeSRAM NVRAMFlash Memory Total DRAMSystem Status LEDs 1-21Figure 1-6 GRP LEDs Partial Front Panel Soft Reset Switch 1-22PCMCIA Slots Asynchronous Serial PortsPCMCIA Slot 0 Bottom PCMCIA Slot 1 TopEthernet Port 1-24Performance Route Processor 1-25Figure 1-8 Performance Route Processor Front View 1-26 The Cisco IOS software images are stored in Flash memory. Two types of Flash memory ship with the PRP1-27 Backplane connectorPRP Memory Components 1-28Type SizeSDRAM 1-29SRAM NVRAMFlash Disk Size Product Number1-30 System Status LEDs1-31 Soft Reset SwitchFlash Disk Slots Ethernet Ports1-32 The PRP includes two Flash disk PCMCIA slots. Either slot can support an ATA Flash disk or a Type 1 or Type 2 linear Flash memory card. The PRP ships by default with one 64-MB ATA Flash diskLine Cards 1-331-34 Figure 1-10 Sample Line CardsChapter 1 Product Overview Line CardsAlarm Cards 1-35ALARM Alarm Output Function Clock and Scheduler Card and Switch Fabric Card StatusAlarm Card Status 1-36Power Subsystems Power Source MonitoringAlarm Relay Contact Connector AC Power Subsystem, page DC Power Subsystem, pageAC Power Subsystem AC PDU1-38 1-39 Captive screwAC-Input Power Supply 1-401-41 An AC-input power supply shown in Figure 1-13 has the following featuresDC Power Subsystem DC PDULED Label Function1-43 Figure 1-14 DC Power Distribution UnitPOWER A DC-Input Power Entry Module 1-44POWER A Chapter 1 Product Overview Power Subsystems1-45 Figure 1-16 DC-Input Power Entry ModuleMISWIRE Color 1-46DC-input PEM LED Indicators LED LabelPower Distribution Blower Module1-47 1-48 Top viewFigure 1-17 Internal Air Flow Top View Air Filters 1-49Figure 1-18 Air Filter Locations Cable-Management System 1-501-51 Figure 1-19 Chassis Cable-Management SystemCISCO 12000 SERIES Technical Specifications Field-Replaceable Units1-52