Cisco Systems 4500 Calculating System Heat Dissipation

Chapter 2 Preparing for Installation

Ventilation

2-16

Catalyst 4500 Series Switches Installation Guide

78-14409-08

Appendix A, “Specifications,” lists the operating and nonoperating environmental

site requirements for the switches. To maintain normal operation and ensure high

system availability, maintain an ambient temperature and clean power at your site.

The environmental ranges listed in Appendix A, “Specifications,” are those

within which the switch will continue to operate; however, a measurement that

approaches the minimum or maximum of a range indicates a potential problem.

You can maintain normal operation by anticipating and correcting environmental

anomalies before they exceed the maximum operating range.

Calculating System Heat Dissipation

To calculate the expected heat dissipation from a switch, add the total amount of

power drawn from power supply by the system's configuration, then divide the

total amount of power by the efficiency of the power supply. Multiply the result

by 3.415 to get the system heat dissipation in BTUs/hr.

First example (System without any powered devices):

Note All Catalyst 4000/4500 power supplies have different efficiencies, An average

efficiency figure of 75% was chosen.

Second example (same system but this time with one IEEE class 3 device):

Components Output Power

1 - Catalyst 4506 with fans 50 W

1 - Supervisor Engine IV 145 W

1 - WS-X4248-RJ45V with no phones 72 W

total output power 267 W

Total heat dissipated by system = (267/.75) * 3.415 = 1215 BTUs/hr

Components Output Power

1 - Catalyst 4506 with fans 50 W

1 - Supervisor Engine IV 145 W

1 - WS-X4248-RJ45V with no phones 72 W

Contents

Main Catalyst 4500 Serie s Switches Installation Guide December 2005 Page Page Page CONTENTS Page Page Page Preface Audience Organization Related Documentation Conventions Page Warnings use the following conventions: Page Page Page Obtaining Documentation and Submitting a Service Request Page Product Overview Switch Features Catalyst 4503 Switch Features Page Page Page Catalyst 4506 Switch Features Page Page Page Switch Features 1-10 Catalyst 4507R Switch Features Figure 1-3 Catalyst 4507R Switch (Front View) Power supplies Page Page Page Page 1-15 Switch Features Catalyst 4510R Switch Features Figure 1-4 Catalyst 4510R Switch (Front View) Power supplies Page Page Page Page Supervisor Engines Page Page 1-23 1-24 1-25 Page LEDs Gigabit Ethernet Uplink Ports 10-Gigabit Ethernet Uplink Ports SFP Ports Ethernet Management Port CONSOLE Port RESET Button CompactFlash Port Fan Assembly 1-31 Figure 1-13 Catal yst 4503 Airflow Figure 1-14 Catal yst 4506 Airflow 1-32 Catalyst 4500 Series Switches Installation Guide Figure 1-15 Catal yst 4507R Airflow 23456789101112 17 1-33 Figure 1-16 Catal yst 4510R Airflow Power Supplies 1-35 configurations. All the inputs in a chassis must be the same voltage (110 or 220 V). Page Power Supply LEDs Power Supply Fan Load-Sharing Feature Environmental Monitoring Feature 1400 W DC Triple-input Power Supply Operational Modes Page Page Page System Architecture Power Flow Power over Ethernet PoE Over-subscription PoE Line Cards Deploying PoE on the Cisco Catalyst 4500 Series Cisco Catalyst 4500 Series Service Provider DC Power Supply Management Flow Switching Traffic Flow Over-subscription Supervisor Redundancy Page 2-1 Preparing for Installation Electrostatic Discharge Preventing Electrostatic Discharge Damage Site Power Requirements and Heat Dissipation Power Connection Guidelines for AC-Powered Systems Page Page Page Page Page Page Page Power Connection Guidelines for DC-Powered Systems Calculating DC Input Current Ventilation Calculating System Heat Dissipation Site-Planning Checklist Page 3-1 Installing the Switch in a Rack Page Checking the Shipping Container Contents Rack-Mounting the Switch Required Installation Tools Rack-Mounting Catalyst 4500 Series Switches Page 3-7 Figure 3-1 L Brackets on the Front Edge of the Catalyst 4503 Switch 3-8 Figure 3-2 L Brackets on the Front Edge of the Catalyst 4506 Switch 3-9 Figure 3-3 L Brackets on the Front Edge of the Catalyst 4507R Switch 23456789101112 17 3-10 Figure 3-4 L Brackets on the Front Edge of the Catalyst 4510R Switch c. Attach the cable guide, if needed, using the M3 screws provided in the cable 3-11 Figure 3-5 Attaching the Cable Guide to the Catalyst 4503 Switch 3-12 Figure 3-6 Attaching the Cable Guide to the Catalyst 4506 Switch 3-13 Figure 3-7 Attaching the Cable Guide to the Catalyst 4507R Switch 2345678910 1112 17 2345678910111217 2345678910 111217 3-14 Figure 3-8 Attaching the Cable Guide to the Catalyst 4510R Switch b. Align the mounting holes in the L bracket with the mounting holes in the equipment rack. 3-15 c. Secure the chassis using at least six (three per side) 12-24 x 3/4-inch screws through the elongated holes in the L bracket and into the threaded holes in the mounting post. d. Use a tape measure and level to ensure that the chassis is installed straight and level. 3-16 Figure 3-10 Installing a Catalyst 4506 Switch in the Rack 3-17 Figure 3-11 Installing a Catalyst 4507R Switch in the Rack 3-18 Figure 3-12 Installing a Catalyst 4510R Switch in the Rack Step 4 Make sure that the ejector levers are completely closed and the supervisor engine and switching modules are installed securely. Step 5 Tighten any loose captive installation screws on the supervisor engine and the System Ground Connection Guidelines 3-20 Figure 3-14 Catalyst 4506 Grounding Holes 3-21 Figure 3-15 Catalyst 4507R Grounding Holes STATUS WS-X4448-GB-RJ45 STATUS 3-22 Figure 3-16 Catalyst 4510R Grounding Holes Parts and Required Tools Connecting System Ground and Power 3-25 Figure 3-17 Connecting System Ground on the Switch pad Grounding lug Wire Screws (M4) Page 4-1 Removing and Replacing FRUs Removing and Replacing the Power Supply 4-3 4-4 Required Tools Removing an AC-Input Power Supply Page Page Installing an AC-Input Power Supply Page Page Removing a DC-Input Power Supply Required Tools Removal Procedure 4-12 4-13 wire last (see Figure 4-13 or Figure 4-14). Statement 1046 Page Page 4-16 Installing a DC-Input Power Supply This section describes how to install a DC-input power supply. Required Tools You will need the following tools to perform this procedure: Installation Procedure Page Removing and Replacing the Chassis Fan Assembly 4-19 Figure 4-17 Catalyst 4503 System Fan Assembly 4-20 Figure 4-18 Catalyst 4506 System Fan Assembly 4-21 Figure 4-19 Catalyst 4507R System Fan Assembly 2345678910 111217 4-22 Figure 4-20 Catalyst 4510R System Fan Assembly Required Tools You will need a Phillips screwdriver for the following two procedures. Removing the Fan Assembly Installing the Fan Assembly Verifying the Installation Replacing Backplane Modules on a Catalyst 4507R or 4510R Switch Page 4-26 Page Page Page Verify the New Modules Troubleshooting System Boot Verification Problem Solving to the System Component Level Using LEDs to Identify Startup Problems Page Troubleshooting the Power Supply Troubleshooting Power Problems using Cisco IOS Troubleshooting the Fan Assembly Troubleshooting Backplane Modules Troubleshooting Switching Modules Page Troubleshooting Switching Modules Using Cisco IOS Troubleshooting Supervisor Engines Troubleshooting Supervisor Engines Using Cisco IOS Page Contacting the Cisco Technical Assistance Center 5-17 Serial Numbers Figure 5-3 Catalyst 4503 Serial Number Location 5-18 Figure 5-4 Catalyst 4506 Serial Number Location 5-19 Figure 5-5 Catalyst 4507R Serial Number Location 5-20 Figure 5-6 Catalyst 4510R Serial Number Location 113784, 781-00251-01A0 APPENDIX A Specifications Catalyst 4503 Switch Specifications Catalyst 4506 Switch Specifications Page Catalyst 4507R Switch Specifications Page Catalyst 4510R Switch Specifications Page Catalyst 4500 Series Power Supplies Page Page Page Page Page Page Page Page Page Page Page APPENDIX B Repacking a Switch B-2 INDEX Numerics A B C D E F G H I L M O P R S T U V W