Manuale d’uso / di manutenzione del prodotto MX960 del fabbricante Juniper Networks
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MX960 Ethernet Services Router DC Power Supply Installation Instructions 19 October 2007 Part Number: 530-017577-01 Revision 2 This document describes how to remove and replace a DC power supply on a Juniper Networks MX960 Ethernet Services Router. Contents DC Power Supply .
DC Power Supply In the DC power configuration, the router contains either two or four DC power supplies (see Figure 1 on page 2), located at the lower rear of the chassis in slots PEM0 through PEM3 (left to right). You can upgrade your DC power system from two to four power supplies.
Table 1: DC Power Supply Electrical Specifications Specification Item 2800 W Maximum output power Minimum: – 40 VDC Nominal: – 48 VDC Operating range: – 40 to – 72 VDC NOTE: If the input voltage from the DC power source drops below -37.5 to -39.
Replacing a DC Power Supply To replace a DC power supply, use the following procedures: ■ Removing a DC Power Supply on page 4 ■ Installing a DC Power Supply on page 7 Removing a DC Power Supply The power supplies are located at the rear of the chassis.
Figure 2: Disconnecting Power Cables From the DC Power Supply 6. Remove the cable lugs from the terminal studs. 7. Loosen the captive screw on the cable restraint on the lower edge of the power supply faceplate. 8. Carefully move the power cables out of the way.
Figure 3: Removing a DC Power Supply Figure 4: Top of the Power Supply Showing Midplane Connector 6 ■ Replacing a DC Power Supply MX960 Ethernet Services Router DC Power Supply Installation Instruct.
Installing a DC Power Supply To install a DC power supply, follow this procedure (see Figure 5 on page 9): 1. Ensure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
■ Attach the positive (+) DC source power cable lug to the RTN (return) terminal. ■ Attach the negative ( – ) DC source power cable lug to the – 48V (input) terminal.
Figure 5: Installing a DC Power Supply Replacing a DC Power Supply ■ 9 Replacing a DC Power Supply.
Figure 6: Connecting DC Power to the Router List of Technical Publications Table 3 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 describes the contents of each document.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book 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 .
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book 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.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes how to use the commit script and self-diagnosis features of the JUNOS software.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book 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.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Summarize new features for a particular release, identify known hardware and software problems, provide information that might have been omitted from the manuals, and provide upgrade and downgrade instructions.
Table 5: 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.
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 MX960 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 MX960 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Juniper Networks MX960 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Juniper Networks MX960 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Juniper Networks MX960, 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 MX960.
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 MX960. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Juniper Networks MX960 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.
