Manuale d’uso / di manutenzione del prodotto MX240 del fabbricante Juniper Networks
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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.
Cooling System The cooling system consists of the following components: ■ Fan tray ■ Air filter The cooling system components work together to keep all router components within the acceptable temperature range (see Figure 1 on page 2, Figure 2 on page 2, Figure 3 on page 3, Figure 4 on page 3, Figure 5 on page 4, and Figure 6 on page 4).
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 Sys.
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.
To replace the fan tray, use the following procedures: ■ Removing the Fan Tray on page 5 ■ Installing the Fan Tray on page 6 Removing the Fan Tray To remove the fan tray (see Figure 7 on page 5 and Figure 8 on page 6): 1.
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.
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.
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 MX240 and MX480 Ethernet Servi.
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.
release notes supporting JUNOS software with enhanced services. All documents are available at http://www.juniper.net/techpubs/ . 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 http://www.
Table 1: Technical Documentation for Supported Routing Platforms (continued) Description Book Provides an overview of network management concepts and describes how to configure various network management features, such as SNMP and accounting options.
Table 1: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes how to access and interpret system log messages generated by JUNOS software modules and provides a reference page for each message.
Table 1: Technical Documentation for Supported Routing Platforms (continued) Description Book J-series Routing Platform Documentation Provides an overview, basic instructions, and specifications for J-series routing platforms.
Table 2: JUNOS Software Network Operations Guides Description Book 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.
Table 3: JUNOS Software with Enhanced Services Documentation (continued) Description Book 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.
Table 4: Additional Books Available Through http://www.juniper.net/books (continued) Description Book Provides an overview of Multiprotocol Label Switching (MPLS) applications (such as Layer 3 virtual.
■ Find CSC offerings: http://www.juniper.net/customers/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: http://kb.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Juniper Networks MX240 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Juniper Networks MX240 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Juniper Networks MX240 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Juniper Networks MX240 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Juniper Networks MX240, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Juniper Networks MX240.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Juniper Networks MX240. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Juniper Networks MX240 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
