Juniper Networks Network Router MX240 User Manual

MX240 and MX480  
Ethernet Services Router  
Fan Tray Installation Instructions  
13 February 2008  
Part Number: 530-022145-01  
Revision 1  
This document describes how to remove and replace the fan tray on a Juniper  
Networks MX240 and MX480 Ethernet Services Router. The fan tray and the air filter  
make up the cooling system.  
Contents  
Cooling System ...............................................................................................2  
Replacing the Fan Tray ....................................................................................4  
Removing the Fan Tray .............................................................................5  
Installing the Fan Tray ..............................................................................6  
Electrostatic Discharge Point ...........................................................................7  
Preventing Electrostatic Discharge Damage ....................................................9  
List of Technical Publications ..........................................................................9  
Requesting Technical Support .......................................................................16  
Revision History ............................................................................................17  
1
 
Cooling System  
be adequately cooled, the Routing Engine shuts down the system by disabling output  
power from each power supply.  
Figure 3: Fan Tray in an MX240 Router  
Figure 4: Fan Tray in an MX480 Router  
Cooling System  
3
 
   
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
Figure 5: Air Filter on an MX240 Router  
Figure 6: Air Filter on an MX480 Router  
Replacing the Fan Tray  
The router has one fan tray that installs vertically in the rear of the chassis. The fan  
tray contains three fans on an MX240 router and six fans on an MX480 router. The  
fan tray is hot-removable and hot-insertable.  
The fan tray is located in the rear of the chassis on the right side. The fan tray weighs  
about 6.8 lb (3.08 kg).  
NOTE: To prevent overheating, install the replacement fan tray immediately after  
removing the existing fan tray.  
4
Replacing the Fan Tray  
 
     
Replacing the Fan Tray  
To replace the fan tray, use the following procedures:  
Removing the Fan Tray  
To remove the fan tray (see Figure 7 on page 5 and Figure 8 on page 6):  
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and  
connect the strap to one of the ESD points on the chassis. For more information  
2. Loosen the captive screws on the fan tray faceplate.  
3. Grasp the fan tray handle and pull it out approximately 1 to 3 inches.  
WARNING: To avoid injury, keep tools and your fingers away from the fans as you  
slide the fan tray out of the chassis. The fans might still be spinning.  
4. Press the latch located on the inside of the fan tray to release it from the chassis.  
5. Place one hand under the fan tray to support it and pull the fan tray completely  
out of the chassis.  
Figure 7: Removing the Fan Tray from an MX240 Router  
Replacing the Fan Tray  
 
5
   
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
Figure 8: Removing the Fan Tray from an MX480 Router  
Installing the Fan Tray  
To install the fan tray (see Figure 9 on page 7 and Figure 10 on page 7):  
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and  
connect the strap to one of the ESD points on the chassis. For more information  
2. Grasp the fan tray handle and insert it straight into the chassis. Note the correct  
orientation by the this side up label on the top surface of the fan tray.  
3. Tighten the captive screws on the fan tray faceplate to secure it in the chassis.  
6
Replacing the Fan Tray  
 
   
Electrostatic Discharge Point  
Figure 9: Installing the Fan Tray in an MX240 Router  
Figure 10: Installing the Fan Tray in an MX480 Router  
Electrostatic Discharge Point  
Figure 11 on page 8 and Figure 12 on page 8 show the location of the ESD point  
on the rear of the chassis. The illustration shows a DC-powered router, but the location  
is the same in AC-powered routers.  
Electrostatic Discharge Point  
 
7
     
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
Figure 11: Rear View of a Fully Configured DC-Powered MX240 Router  
Figure 12: Rear View of a Fully Configured DC-Powered MX480 Router  
8
Electrostatic Discharge Point  
 
   
Preventing Electrostatic Discharge Damage  
Preventing Electrostatic Discharge Damage  
Many router hardware components are sensitive to damage from static electricity.  
Some components can be impaired by voltages as low as 30 V. You can easily  
generate potentially damaging static voltages whenever you handle plastic or foam  
packing material or if you move components across plastic or carpets. Observe the  
following guidelines to minimize the potential for electrostatic discharge (ESD)  
damage, which can cause intermittent or complete component failures:  
Always use an ESD wrist strap or ankle strap, and make sure that it is in direct  
contact with your skin.  
CAUTION: For safety, periodically check the resistance value of the ESD strap. The  
measurement should be in the range of 1 to 10 Mohms.  
When handling any component that is removed from the chassis, make sure the  
equipment end of your ESD strap is attached to one of the ESD points on the  
chassis, which are shown in Figure 11 on page 8 and Figure 12 on page 8.  
Avoid contact between the component and your clothing. ESD voltages emitted  
from clothing can still damage components.  
When removing or installing a component, always place it component-side up  
on an antistatic surface, in an antistatic card rack, or in an electrostatic bag (see  
Figure 13 on page 9). If you are returning a component, place it in an  
electrostatic bag before packing it.  
Figure 13: Placing a Component into an Electrostatic Bag  
List of Technical Publications  
Table 1 on page 10 lists the software and hardware guides and release notes for  
Juniper Networks J-series, M-series, MX-series, and T-series routing platforms and  
in the Network Operations Guide series. Table 3 on page 14 lists the manuals and  
Preventing Electrostatic Discharge Damage  
 
9
     
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
release notes supporting JUNOS software with enhanced services. All documents are  
Table 4 on page 15 lists additional books on Juniper Networks solutions that you can  
order through your bookstore. A complete list of such books is available at  
Table 1: Technical Documentation for Supported Routing Platforms  
Book Description  
JUNOS Software for Supported Routing Platforms  
Access Privilege  
Explains how to configure access privileges in user classes by using  
permission flags and regular expressions. Lists the permission flags  
along with their associated command-line interface (CLI) operational  
mode commands and configuration statements.  
Class of Service  
Provides an overview of the class-of-service (CoS) functions of the  
JUNOS software and describes how to configure CoS features,  
including configuring multiple forwarding classes for transmitting  
packets, defining which packets are placed into each output queue,  
scheduling the transmission service level for each queue, and  
managing congestion through the random early detection (RED)  
algorithm.  
CLI User Guide  
Describes how to use the JUNOS command-line interface (CLI) to  
configure, monitor, and manage Juniper Networks routing  
platforms. This material was formerly covered in the JUNOS System  
Basics Configuration Guide.  
Feature Guide  
Provides a detailed explanation and configuration examples for  
several of the most complex features in the JUNOS software.  
High Availability  
Provides an overview of hardware and software resources that  
ensure a high level of continuous routing platform operation and  
describes how to configure high availability (HA) features such as  
nonstop active routing (NSR) and graceful Routing Engine  
switchover (GRES).  
MPLS Applications  
Provides an overview of traffic engineering concepts and describes  
how to configure traffic engineering protocols.  
Multicast Protocols  
Multiplay Solutions  
MX-series Solutions Guide  
Provides an overview of multicast concepts and describes how to  
configure multicast routing protocols.  
Describes how you can deploy IPTV and voice over IP (VoIP)  
services in your network.  
Describes common configuration scenarios for the Layer 2 features  
supported on the MX-series routers, including basic bridged VLANs  
with normalized VLAN tags, aggregated Ethernet links, bridge  
domains, Multiple Spanning Tree Protocol (MSTP), and integrated  
routing and bridging (IRB).  
Network Interfaces  
Provides an overview of the network interface functions of the  
JUNOS software and describes how to configure the network  
interfaces on the routing platform.  
10  
List of Technical Publications  
 
 
List of Technical Publications  
Table 1: Technical Documentation for Supported Routing Platforms (continued)  
Book  
Description  
Network Management  
Provides an overview of network management concepts and  
describes how to configure various network management features,  
such as SNMP and accounting options.  
Policy Framework  
Routing Protocols  
Provides an overview of policy concepts and describes how to  
configure routing policy, firewall filters, and forwarding options.  
Provides an overview of routing concepts and describes how to  
configure routing, routing instances, and unicast routing protocols.  
Secure Configuration Guide for Common Criteria Provides an overview of secure Common Criteria and JUNOS-FIPS  
and JUNOS-FIPS  
protocols for the JUNOS software and describes how to install and  
configure secure Common Criteria and JUNOS-FIPS on a routing  
platform.  
Services Interfaces  
Provides an overview of the services interfaces functions of the  
JUNOS software and describes how to configure the services  
interfaces on the router.  
Software Installation and Upgrade Guide  
Describes the JUNOS software components and packaging and  
explains how to initially configure, reinstall, and upgrade the JUNOS  
system software. This material was formerly covered in the JUNOS  
System Basics Configuration Guide.  
System Basics  
VPNs  
Describes Juniper Networks routing platforms and explains how  
to configure basic system parameters, supported protocols and  
software processes, authentication, and a variety of utilities for  
managing your router on the network.  
Provides an overview and describes how to configure Layer 2 and  
Layer 3 virtual private networks (VPNs), virtual private LAN service  
(VPLS), and Layer 2 circuits. Provides configuration examples.  
JUNOS References  
Hierarchy and RFC Reference  
Describes the JUNOS configuration mode commands. Provides a  
hierarchy reference that displays each level of a configuration  
hierarchy, and includes all possible configuration statements that  
can be used at that level. This material was formerly covered in  
the JUNOS System Basics Configuration Guide.  
Interfaces Command Reference  
Describes the JUNOS software operational mode commands you  
use to monitor and troubleshoot interfaces.  
Routing Protocols and Policies Command  
Reference  
Describes the JUNOS software operational mode commands you  
use to monitor and troubleshoot routing policies and protocols,  
including firewall filters.  
System Basics and Services Command Reference Describes the JUNOS software operational mode commands you  
use to monitor and troubleshoot system basics, including  
commands for real-time monitoring and route (or path) tracing,  
system software management, and chassis management. Also  
describes commands for monitoring and troubleshooting services  
such as class of service (CoS), IP Security (IPSec), stateful firewalls,  
flow collection, and flow monitoring.  
List of Technical Publications  
 
11  
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
Table 1: Technical Documentation for Supported Routing Platforms (continued)  
Book  
Description  
System Log Messages Reference  
Describes how to access and interpret system log messages  
generated by JUNOS software modules and provides a reference  
page for each message.  
J-Web User Guide  
J-Web Interface User Guide  
Describes how to use the J-Web graphical user interface (GUI) to  
configure, monitor, and manage Juniper Networks routing  
platforms.  
JUNOS API and Scripting Documentation  
JUNOScript API Guide  
Describes how to use the JUNOScript application programming  
interface (API) to monitor and configure Juniper Networks routing  
platforms.  
JUNOS XML API Configuration Reference  
JUNOS XML API Operational Reference  
NETCONF API Guide  
Provides reference pages for the configuration tag elements in the  
JUNOS XML API.  
Provides reference pages for the operational tag elements in the  
JUNOS XML API.  
Describes how to use the NETCONF API to monitor and configure  
Juniper Networks routing platforms.  
JUNOS Configuration and Diagnostic Automation Describes how to use the commit script and self-diagnosis features  
Guide  
of the JUNOS software. This guide explains how to enforce custom  
configuration rules defined in scripts, how to use commit script  
macros to provide simplified aliases for frequently used  
configuration statements, and how to configure diagnostic event  
policies.  
Hardware Documentation  
Hardware Guide  
Describes how to install, maintain, and troubleshoot routing  
platforms and components. Each platform has its own hardware  
guide.  
PIC Guide  
DPC Guide  
Describes the routing platform's Physical Interface Cards (PICs).  
Each platform has its own PIC guide.  
Describes the Dense Port Concentrators (DPCs) for all MX-series  
routers.  
JUNOScope Documentation  
JUNOScope Software User Guide  
Describes the JUNOScope software graphical user interface (GUI),  
how to install and administer the software, and how to use the  
software to manage routing platform configuration files and monitor  
routing platform operations.  
Advanced Insight Solutions (AIS) Documentation  
Advanced Insight Solutions Guide  
Describes the Advanced Insight Manager (AIM) application, which  
provides a gateway between JUNOS devices and Juniper Support  
Systems (JSS) for case management and intelligence updates.  
Explains how to run AI scripts on Juniper Networks devices.  
12  
List of Technical Publications  
 
List of Technical Publications  
Table 1: Technical Documentation for Supported Routing Platforms (continued)  
Book  
Description  
J-series Routing Platform Documentation  
Getting Started Guide  
Provides an overview, basic instructions, and specifications for  
J-series routing platforms. The guide explains how to prepare your  
site for installation, unpack and install the router and its  
components, install licenses, and establish basic connectivity. Use  
the Getting Started Guide for your router model.  
Basic LAN and WAN Access Configuration Guide Explains how to configure the interfaces on J-series Services Routers  
for basic IP routing with standard routing protocols, ISDN backup,  
and digital subscriber line (DSL) connections.  
Advanced WAN Access Configuration Guide  
Explains how to configure J-series Services Routers in virtual private  
networks (VPNs) and multicast networks, configure data link  
switching (DLSw) services, and apply routing techniques such as  
policies, stateless and stateful firewall filters, IP Security (IPSec)  
tunnels, and class-of-service (CoS) classification for safer, more  
efficient routing.  
Administration Guide  
Shows how to manage users and operations, monitor network  
performance, upgrade software, and diagnose common problems  
on J-series Services Routers.  
Release Notes  
JUNOS Release Notes  
Summarize new features and known problems for a particular  
software release, provide corrections and updates to published  
JUNOS, JUNOScript, and NETCONF manuals, provide information  
that might have been omitted from the manuals, and describe  
upgrade and downgrade procedures.  
Hardware Release Notes  
JUNOScope Release Notes  
AIS Release Notes  
Describe the available documentation for the routing platform and  
summarize known problems with the hardware and accompanying  
software. Each platform has its own release notes.  
Contain corrections and updates to the published JUNOScope  
manual, provide information that might have been omitted from  
the manual, and describe upgrade and downgrade procedures.  
Summarize AIS new features and guidelines, identify known and  
resolved problems, provide information that might have been  
omitted from the manuals, and provide initial setup, upgrade, and  
downgrade procedures.  
AIS AI Script Release Notes  
Summarize AI Scripts new features, identify known and resolved  
problems, provide information that might have been omitted from  
the manuals, and provide instructions for automatic and manual  
installation, including deleting and rolling back.  
J-series Services Router Release Notes  
Briefly describe Services Router features, identify known hardware  
problems, and provide upgrade and downgrade instructions.  
List of Technical Publications  
 
13  
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
Table 2: JUNOS Software Network Operations Guides  
Book  
Description  
Baseline  
Describes the most basic tasks for running a network using Juniper  
Networks products. Tasks include upgrading and reinstalling JUNOS  
software, gathering basic system management information,  
verifying your network topology, and searching log messages.  
Interfaces  
MPLS  
Describes tasks for monitoring interfaces. Tasks include using  
loopback testing and locating alarms.  
Describes tasks for configuring, monitoring, and troubleshooting  
an example MPLS network. Tasks include verifying the correct  
configuration of the MPLS and RSVP protocols, displaying the status  
and statistics of MPLS running on all routing platforms in the  
network, and using the layered MPLS troubleshooting model to  
investigate problems with an MPLS network.  
MPLS Log Reference  
Describes MPLS status and error messages that appear in the output  
of the show mpls lsp extensive command. The guide also describes  
how and when to configure Constrained Shortest Path First (CSPF)  
and RSVP trace options, and how to examine a CSPF or RSVP  
failure in a sample network.  
MPLS Fast Reroute  
Hardware  
Describes operational information helpful in monitoring and  
troubleshooting an MPLS network configured with fast reroute  
(FRR) and load balancing.  
Describes tasks for monitoring M-series and T-series routing  
platforms.  
To configure and operate a J-series Services Router running JUNOS software with  
enhanced services, you must also use the configuration statements and operational  
mode commands documented in JUNOS configuration guides and command  
references. To configure and operate a WX Integrated Services Module, you must  
also use WX documentation.  
Table 3: JUNOS Software with Enhanced Services Documentation  
Book Description  
JUNOS Software with Enhanced Services Design Provides guidelines and examples for designing and  
and Implementation Guide  
implementing IP Security (IPSec) virtual private networks  
(VPNs), firewalls, and routing on J-series routers running  
JUNOS software with enhanced services.  
JUNOS Software with Enhanced Services J-series Explains how to quickly set up a J-series router. This  
Services Router Quick Start document contains router declarations of conformity.  
JUNOS Software with Enhanced Services J-series Provides an overview, basic instructions, and specifications  
Services Router Getting Started Guide  
for J-series Services Routers. This guide explains how to  
prepare a site, unpack and install the router, replace router  
hardware, and establish basic router connectivity. This guide  
contains hardware descriptions and specifications.  
14  
List of Technical Publications  
 
   
List of Technical Publications  
Table 3: JUNOS Software with Enhanced Services Documentation (continued)  
Book  
Description  
JUNOS Software with Enhanced Services  
Migration Guide  
Provides instructions for migrating an SSG device running  
ScreenOS software or a J-series router running the JUNOS  
software to JUNOS software with enhanced services.  
JUNOS Software with Enhanced Services  
Interfaces and Routing Configuration Guide  
Explains how to configure J-series router interfaces for basic  
IP routing with standard routing protocols, ISDN service,  
firewall filters (access control lists), and class-of-service (CoS)  
traffic classification.  
JUNOS Software with Enhanced Services Security Explains how to configure and manage security services  
Configuration Guide  
such as stateful firewall policies, IPSec VPNs, firewall screens,  
Network Address translation (NAT) and Router interface  
modes, Public Key Cryptography, and Application Layer  
Gateways (ALGs).  
JUNOS Software with Enhanced Services  
Administration Guide  
Shows how to monitor the router and routing operations,  
firewall and security services, system alarms and events,  
and network performance. This guide also shows how to  
administer user authentication and access, upgrade software,  
and diagnose common problems.  
JUNOS Software with Enhanced Services CLI  
Reference  
Provides the complete JUNOS software with enhanced  
services configuration hierarchy and describes the  
configuration statements and operational mode commands  
not documented in the standard JUNOS manuals.  
WXC Integrated Services Module Installation and Explains how to install and initially configure a WXC  
Configuration Guide  
Integrated Services Module in a J-series router for application  
acceleration.  
JUNOS Software with Enhanced Services Release Summarize new features and known problems for a  
Notes  
particular release of JUNOS software with enhanced services  
on J-series routers, including J-Web interface features and  
problems. The release notes also contain corrections and  
updates to the manuals and software upgrade and  
downgrade instructions for JUNOS software with enhanced  
services.  
Book  
Description  
Interdomain Multicast  
Routing  
Provides background and in-depth analysis of multicast routing using Protocol Independent  
Multicast sparse mode (PIM SM) and Multicast Source Discovery Protocol (MSDP); details  
any-source and source-specific multicast delivery models; explores multiprotocol BGP (MBGP)  
and multicast IS-IS; explains Internet Gateway Management Protocol (IGMP) versions 1, 2, and  
3; lists packet formats for IGMP, PIM, and MSDP; and provides a complete glossary of multicast  
terms.  
JUNOS Cookbook  
Provides detailed examples of common JUNOS software configuration tasks, such as basic router  
configuration and file management, security and access control, logging, routing policy, firewalls,  
routing protocols, MPLS, and VPNs.  
List of Technical Publications  
 
15  
 
MX240 and MX480 Ethernet Services Router Fan Tray Installation Instructions  
Book  
Description  
MPLS-Enabled Applications  
Provides an overview of Multiprotocol Label Switching (MPLS) applications (such as Layer 3  
virtual private networks [VPNs], Layer 2 VPNs, virtual private LAN service [VPLS], and  
pseudowires), explains how to apply MPLS, examines the scaling requirements of equipment  
at different points in the network, and covers the following topics: point-to-multipoint label  
switched paths (LSPs), DiffServ-aware traffic engineering, class of service, interdomain traffic  
engineering, path computation, route target filtering, multicast support for Layer 3 VPNs, and  
management and troubleshooting of MPLS networks.  
OSPF and IS-IS: Choosing an Explores the full range of characteristics and capabilities for the two major link-state routing  
IGP for Large-Scale Networks protocols: Open Shortest Path First (OSPF) and IS-IS. Explains architecture, packet types, and  
addressing; demonstrates how to improve scalability; shows how to design large-scale networks  
for maximum security and reliability; details protocol extensions for MPLS-based traffic  
engineering, IPv6, and multitopology routing; and covers troubleshooting for OSPF and IS-IS  
networks.  
Routing Policy and Protocols Provides a brief history of the Internet, explains IP addressing and routing (Routing Information  
for Multivendor IP Networks Protocol [RIP], OSPF, IS-IS, and Border Gateway Protocol [BGP]), explores ISP peering and  
routing policies, and displays configurations for both Juniper Networks and other vendors'  
routers.  
The Complete IS-IS Protocol  
Provides the insight and practical solutions necessary to understand the IS-IS protocol and how  
it works by using a multivendor, real-world approach.  
Requesting Technical Support  
Technical product support is available through the Juniper Networks Technical  
Assistance Center (JTAC). If you are a customer with an active J-Care or JNASC support  
contract, or are covered under warranty, and need postsales technical support, you  
can access our tools and resources online or open a case with JTAC.  
JTAC policiesFor a complete understanding of our JTAC procedures and policies,  
review the JTAC User Guide located at  
Product warrantiesFor product warranty information, visit  
JTAC Hours of Operation The JTAC centers have resources available 24 hours  
a day, 7 days a week, 365 days a year.  
Self-Help Online Tools and Resources  
For quick and easy problem resolution, Juniper Networks has designed an online  
self-service portal called the Customer Support Center (CSC) that provides you with  
the following features:  
16  
Requesting Technical Support  
 
 
Requesting Technical Support  
Search for known bugs: http://www2.juniper.net/kb/  
Find product documentation: http://www.juniper.net/techpubs/  
Find solutions and answer questions using our Knowledge Base:  
Download the latest versions of software and review release notes:  
Search technical bulletins for relevant hardware and software notifications:  
Join and participate in the Juniper Networks Community Forum:  
Open a case online in the CSC Case Manager: http://www.juniper.net/cm/  
To verify service entitlement by product serial number, use our Serial Number  
.
Opening a Case with JTAC  
You can open a case with JTAC on the Web or by telephone.  
Use the Case Manager tool in the CSC at http://www.juniper.net/cm/ .  
Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).  
For international or direct-dial options in countries without toll-free numbers, visit  
Revision History  
13 February 2008530-022145-01 Revision 1. Added the MX240 Router  
12 September 2007530-020797-01 Revision 1.  
Copyright © 2008, Juniper Networks, Inc. All rights reserved.  
Juniper Networks, the Juniper Networks logo, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United States and other  
countries. JUNOS and JUNOSe are trademarks of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service  
marks are the property of their respective owners.  
Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify, transfer, or  
otherwise revise this publication without notice.  
Products made or sold by Juniper Networks or components thereof might be covered by one or more of the following patents that are owned by or licensed  
to Juniper Networks: U.S. Patent Nos. 5,473,599, 5,905,725, 5,909,440, 6,192,051, 6,333,650, 6,359,479, 6,406,312, 6,429,706, 6,459,579, 6,493,347,  
6,538,518, 6,538,899, 6,552,918, 6,567,902, 6,578,186, and 6,590,785.  
Requesting Technical Support  
 
17  
 

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