Juniper MX240 - UPGRADING User Manual

Upgrading MX240, MX480, and MX960
3D Universal Edge Router Fan Trays and
Power Supplies
December 2010
Part Number: 530-036423
Revision 02
This document describes the necessary steps to be taken to upgrade any Juniper Networks
MX Series 3D Universal Edge Router chassis to higher capacity cooling and higher capacity
power. Step-by-step descriptions are given for replacement of the various parts in the
chassis. All of these upgrades can be performed while the system is operational, but it
is important to follow the complete process through.
NOTE: Combinations of regular-capacity and high-capacity supplies and fan
trays are not supported outside of the upgrade window.
CAUTION: The router cannot be powered from AC and DC power supplies
simultaneously. The first type of power supply detected by the router when
initially powered on determines the type of power supply allowed by the
router. All installed power supplies of the other type are disabled by the router.
If you install a power supply of the other type while the router is operating,
the router disables the power supply and generates an alarm.
NOTE: Before upgrading, the MX Series router must be running Junos OS
Release 10.0 R1 or later to support high-capacity fan trays. Junos OS Release
10.0 R2 is required to support the MX240 and MX480 AC and DC high capacity
power supplies, and the MX960 AC high- capacity power supplies. Junos OS
Release 10.2 R1 is required to support the MX960 DC high-capacity power
supplies.
1Copyright © 2010, Juniper Networks, Inc.

Juniper MX240 - UPGRADING Specifications

General

Product Type	Router
Chassis Type	Modular
Operating System	Junos OS
Power Supply	AC or DC
Cooling	Front-to-back
Routing Engine	Dual RE (Routing Engine)

Summary

Fan Tray Upgrades

Fan Tray Upgrade Overview

Overview of upgrading high-capacity fan trays for MX Series routers and cooling requirements.

Replace MX240 Fan Tray

Step-by-step instructions for removing and replacing the MX240 fan tray.

Replace MX480 Fan Tray

Step-by-step instructions for removing and replacing the MX480 fan tray.

Replace MX960 Fan Trays

Instructions for removing and replacing MX960 fan trays.

Upgrade MX960 Air Filter Tray

Steps to upgrade the MX960 air filter tray for proper cooling.

Remove MX960 Air Filter

Instructions for removing the MX960 air filter.

Install MX960 High-Capacity Tray and Filter

Procedure for installing the MX960 high-capacity tray and filter.

Fan Tray Power Requirements

Details power requirements for different MX Series high-capacity fan trays.

Power Supply Upgrades

Power Supply Zone Overview

Explanation of zoned power supplies in MX Series high-capacity configurations.

Upgrade MX240/MX480 AC Power Supplies

Procedures for upgrading MX240/MX480 AC power supplies, including removal.

Install MX240/MX480 AC High-Capacity Power Supplies

Steps to install MX240/MX480 AC high-capacity power supplies.

Upgrade MX240/MX480 DC Power Supplies

Procedures for upgrading MX240/MX480 DC power supplies, including removal.

Set MX240/MX480 DC Power Supply Input Mode

How to set the input mode switch on DC high-capacity power supplies.

Upgrade MX960 AC Power Supplies

Overview of upgrading MX960 AC power supplies.

Remove MX960 AC Power Supplies

Step-by-step instructions for removing MX960 AC power supplies.

Install MX960 AC High-Capacity Power Supplies

Procedure for installing MX960 AC high-capacity power supplies.

Upgrade MX960 DC Power Supplies

Overview of upgrading MX960 DC power supplies.

Remove MX960 DC Power Supply

Steps for removing an MX960 DC power supply.

Install MX960 DC High-Capacity Power Supplies

Procedure for installing MX960 DC high-capacity power supplies.

Support and Documentation

JUNOS Documentation and Release Notes

Information on accessing JUNOS documentation and release notes.

Requesting Technical Support

How to contact Juniper Networks Technical Assistance Center (JTAC) for support.

Self-Help Online Tools and Resources

Accessing Juniper's online self-service portal for support.

Opening a Case with JTAC

Procedures for opening a support case with JTAC.

Revision History

Record of changes made to the document over different release dates.