Manuale d’uso / di manutenzione del prodotto ERX-1440 del fabbricante Juniper Networks
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Juniper Networks, Inc. 1194 Nor th Mathilda Avenue Sunnyvale, CA 94089 USA 408-745-2000 www .juniper .net ERX Edge R outers Installation and User Guide R elease 4.
Juniper Networks is registered in the U.S. Patent and Tr ademark Office and in other countri es as a trademark of Juniper Networks, Inc. Broadband Ca ble Processor , ERX, ESP , G1, G10, G-ser ies, Int.
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Contents About This Guide ERX Edge Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents x Chapter 2 Installing the ERX System Bef ore Y ou Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 U npacking the ERX -1 400 Series . . . . . . . . . . . . . . . . . . . . . . . .
ERX Edge Routers xi Cabling SC Duplex Connec tors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4 Cabling SMB Connect ors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 5 Cabling X.2 1/V .
Contents xii Chapter 8 T roubleshooting Diagnosing Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 P ow er F ailure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ERX Edge Routers xiii Appendix E Installing ERX System Software Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1 Identifying the Software Release File . . . . . . . . . . . . .
Contents xiv.
About T his Guide This ERX Installation and User Guide provides the information you need to ins tall and star t the ERX edge rout er . Note: If the i nformation in th e ERX Release Notes diff ers from the informatio n in this guide, follow the ERX Release Notes.
About This Guide xvi Audience This guide is intended f or exper ience d system and netw ork specialists who will conf igure a Juniper Ne twor k s ERX system in an Int ernet access environment. Con ventions Ta b l e 1 , Ta b l e 2 , and Ta b l e 3 list all t he con ventions used in t he ERX documentation.
Documentation ERX Edge Routers xvii Documentation The ERX Installation Quick Star t poster is shipped in the box with all new systems . This poster provides t he basic procedu res to help you get the system up and running quickly .
About This Guide xviii • ERX Routing Pro tocols Conf iguration Guide, V ol. 1 – Provides information about conf igur ing routin g policy and con f igur ing IP , IP routing, an d IP secur ity . • ERX Routing Protocols Conf iguration Guide, V o l.
Using the Online Documentation CD ERX Edge Routers xix Using the Online Documenta tion CD T o use the Online D ocumentation CD: 1 Place the Online Documentation CD in your CD drive. 2 F ollow the instr uctions locat ed on t he inside cov er of y our CD jewel case to install Acr obat Reader .
About This Guide xx.
1 ERX System Ov er view This chapte r provides inf or mation about the system. T he ERX System The ERX edge routers are modular , ca rr ier -class netw orking devices t hat deliver performance, reliability , and ser vice dif ferentiation to both business and consumer Int er ne t users.
CHAPTER 1 ERX System Overview 1-2 All models use the same software. Ho we ver , the specif ic model det er mines: • The combination of line modules supported • The conditions f or line rate perfor.
The ERX System ERX Edge Routers 1-3 Figure 1-1 ERX-1400 series front view ERX -1400 Redundant SRP module T op bezel Flange Ejector SRP module Line module (slot 13) PCMCIA slot Bottom bezel Plenum Line.
CHAPTER 1 ERX System Overview 1-4 Figure 1-2 ERX-1400 series rear view ERX-700 Series In the ERX document ation, the term ERX -700 ser ies refers to bo t h the ERX -705 system and the ERX -700 system. The terms ERX -705 system and ERX -700 system ref er to the specif ic models.
The ERX System ERX Edge Routers 1-5 The ERX -705 chassis is the same as t he ERX -700 chassis (see Figu re 1-3 and Figure 1-4 ). The chassis contains seven slot s to accommodate modules. Installation procedures and operating procedures are identical f or both systems.
CHAPTER 1 ERX System Overview 1-6 W her e the ERX System Fits In Figure 1-5 and Figure 1-6 illustrate t he po sition of t he system as an edge router in an end-t o-end Internet netw ork. Communications wit h the system ca n take place ov er a variety of media.
ERX System Modules ERX Edge Routers 1-7 ERX System Modules The system supports an SRP module and a selection of line modules. Y ou can use any line module for access or uplink .
CHAPTER 1 ERX System Overview 1-8 SRP Module The SRP module (see Figure 1-8 ) is a two-board assembly; both boards connect to the syst em’s midplane and to each other: • The fabric board is a switch f abr ic server that queues pack ets f or the line modules.
ERX System Modules ERX Edge Routers 1-9 Figure 1-8 SRP module SRP I/O Module A single cor responding input/output module called the SRP I/O module interfaces with one or tw o SRP modules through the system’s midplane. The same SRP I/O w orks with all models of t he SRP module.
CHAPTER 1 ERX System Overview 1-10 Line Modules Line modules process da ta from dif feren t types of netw ork connections. F or information about the availa ble line modules and which SRP modules support specif ic line modules, see Appendix B, Module Specif ications .
Network Management Tools ERX Edge Routers 1-11 I/O Modules Most line modules have a corresponding input/output (I/O) module t hat provides t he physical interconnectio n to the netw ork. Inser t each I/O module in the back of the system, di rec tly behind its corresponding line module.
CHAPTER 1 ERX System Overview 1-12 SRP I/O module locat ed in the rear of t he chassis. If the primar y SRP fails, the redundant SRP module a ssumes control without rebooting or initializing itself. (As a consequence, if y ou upgrade sof tware, y ou must copy the software to the redundant SRP and reboo t it.
Redundancy Features ERX Edge Routers 1-13 If there is not enoug h space on t he pr imar y NVS card to create t he synchronization reser ve f ile, t he synchronize command fails, and y ou see a warning message on the console.
CHAPTER 1 ERX System Overview 1-14 Figure 1-10 Data flow when a spare line module is active F or information about installing modu les f or line module redundancy , see Chapt er 3, Installing ERX Modules .
The Next Step ERX Edge Routers 1-15 Fans F orced air-cooling k eeps t he temperature of t he ERX modules and components within nor mal operating limits. In the ERX -1 400 ser ies, six cooling fans are locat ed in a tray at t he top of the system (see Figure 7-5 ).
CHAPTER 1 ERX System Overview 1-16.
2 Installing the ERX System This chapter pro vi des procedures f o r installing t he ERX -1 400 ser ies and the ERX-700 series eit her as freesta nding devices or in a distr ibution rack. Before Y ou Be gin Bef ore yo u begin unpacking the syste m, be sure y ou ha ve the fo llowing items: • A No.
CHAPTER 2 Installing the ERX System 2-2 Figure 2-1 Packaged ERX-1400 series T o unpack t he ERX -1 400 ser ies: 1 Cu t th e t w o st ra ps th at se cu re the c art o n t o th e s ki d. S ee Figure 2-1 . 2 Open the car ton from the top. 3 Remov e t he bo x of accessor ies that sits on top of th e router .
Unpacking the ERX-1400 Series ERX Edge Routers 2-3 Figure 2-2 Lifting the carton off an ERX-1400 series 6 Use a Phillip s screwdr iver to remov e th e thre e screws (1 0-32 x 3/8 in) that att ach each of the two L -bracke ts to the router .
CHAPTER 2 Installing the ERX System 2-4 Figure 2-3 Removing an L-bracket 8 Depending on where y ou want to position the system, proceed t o Freesta ndi ng I nst alla tio n or R ack -Mounted Ins tallation , later in t his chapter . Unpacking the ERX-700 Series The ERX -700 ser ies come bo xed but not attached to a skid.
Freestanding Installation ERX Edge Routers 2-5 F r eestanding Installation This sec tion provides instr uc tions for installing t he sy stem on a table top or in any o ther freestanding mode. See Appendix D, Pr epar ing Y our Site , for inf or mation about site requirements.
CHAPTER 2 Installing the ERX System 2-6 Figure 2-5 ERX-700 series rear view Rack-Mounted Installa tion W e recommend that you use a standard EIA distr ibution rack. Ref er to Rac k R eq ui re me nt s in Appendix D, Preparing Y our Site , for de t ailed rack inf or mation.
Rack-Mounted Installation ERX Edge Routers 2-7 Safety Guidelines Obser ve the following saf ety guidelines when mountin g the syste m in a rack. Rack Installation W arning: Inst all equipment in t he rack from the bottom upward. This will maint ain the st ability of t he rack and reduce the chance of th e rack’s tipping ov er .
CHAPTER 2 Installing the ERX System 2-8 T o install t he sy stem in th e rack: 1 On the r ac k, id ent ify a nd ma rk the ho l es th at y ou wan t t o u se f or mount ing t he system . 2 One person should stand on t he left side of t he system, and ano t her should stand on t he right side.
Rack-Mounted Installation ERX Edge Routers 2-9 Figure 2-6 Rack with ERX-700 systems and an ERX-1410 system OC3 SRP SRP CT3 SRP SRP CT3 CT3 CT3 O C 3 S R P S R P C T 3 S R P S R P C T 3 C T 3 C T 3 OC3.
CHAPTER 2 Installing the ERX System 2-10 T he Ne xt Step After y ou f inish inst alling t he sy stem: • If the system was delivered with t he modules already installed, go to Chapt er 4, Cabling the ERX System , f or instructions on connecting cables.
3 Installing ERX Modules This chapter descr ibes how to ph ysica lly install an d remov e ERX modules. If the modules y ou want are already installed in the system, y o u can skip this chapter and go to Chap ter 4, Cabling the ERX System .
CHAPTER 3 Installing ERX Modules 3-2 Figure 3-1 Orientation of line modules in the ERX-700 serie s and ERX-1400 series F or details about available line modules, see Appendix B, Module Specif ications . Slot Groups The slots in the ERX -700 ser ies ’ and t he ERX -1 4 1 0 system’s chassis are divided into groups.
Overview ERX Edge Routers 3-3 Slots 6 and 7 are r eser ved for the SRP modules. Figure 3-2 ERX-1400 slot groups Slot Groups for the ERX-700 Series A slot group in the ERX -700 ser ies compr ises one slot or tw o adjacent slots.
CHAPTER 3 Installing ERX Modules 3-4 . Figure 3-3 ERX-700 series slot groups Combinations of Line Modules F or information about allow e d combinations of lin e modules, see ERX Syst em Basics Conf iguration Guide, Chapt er 5, Man aging Line Modules and SRP Modules .
Protecting Modules and Slots ERX Edge Routers 3-5 On the ERX -1 400 ser ies, the g rounding jacks are inside t he front bezel in the low er -left area of the front of the chassis ( Figu re 3-4 ) and in t he upper -r ight cor ner on the rear of t he chassis.
CHAPTER 3 Installing ERX Modules 3-6 Safety Guidelines Before and during the installation process, observe the follo wing precautions: Lightning Activity Warning: Do not work on the system or connect or disconnect cables du ring lightning activity .
Installing SRP I/O and SRP Modules ERX Edge Routers 3-7 Figure 3-5 Removing the blank faceplate Caution: Always handle the modul e by its e dges. Do not touch t he components, pins, leads, or solder connect ions. 4 Remov e the SRP I/O module from its antistatic bag.
CHAPTER 3 Installing ERX Modules 3-8 Figure 3-6 Installing an SRP I/O module in the ERX-1400 series 7 Tighten the module’s captiv e screws using a Phillips screwdriver . T urn both screws several times before tight ening t hem comple tely to allo w t he module to sit cor rec tly .
Installing SRP I/O and SRP Modules ERX Edge Routers 3-9 Caution: Always handle the modul e by its e dges. Do not touch t he components, pins, leads, or solder connect ions. 5 Remov e the SRP module from its antistatic bag. 6 Make su re that t he ejec tors are in position 1 , as sho wn in Figure 3-7 .
CHAPTER 3 Installing ERX Modules 3-10 Figure 3-8 Installing an SRP module 9 Insert t he module into t he backplane by simultaneously depressing both eject ors (as sho wn in Figure 3-7 ) and ex er ting f or ward pressure on the module. 10 Tighten the module’s captiv e screws using a Phillips screwdriver .
Installing Line Modules and Their I/O Modules ERX Edge Routers 3-11 Installing a Line or I/O Module T o install a module: 1 Connect the antistatic wrist strap to the ESD grounding jack on y our ERX system. Caution: When handling modules, use an antist atic wrist strap co nnected to the ERX system’s ESD grounding ja ck.
CHAPTER 3 Installing ERX Modules 3-12 Figure 3-9 Installing a module in the ERX-1400 series 9 Insert t he module int o the midplane by simultaneously de pressing both eject ors (as sho wn in Figure 3-7 ) and ex er ting f or ward pressure on the module.
Removing a Module ERX Edge Routers 3-13 R emo ving a Module T o remov e a module: Caution: If you do not u se the halt command before removing or powering down an SRP , the system’s NVS card may become corrupted.
CHAPTER 3 Installing ERX Modules 3-14 Figure 3-10 Installing the blank faceplate If you r emov e an I/O module and not the cor responding line module, the line module reboots, and then its status will be “inactiv e” when you issue a show version command.
Installing Components for Line Module Redundancy ERX Edge Routers 3-15 Caution: When handling modules, use an antist atic wrist strap co nnected to the ERX system’s ESD grounding j ack, and hold modules by their edges. Do not touch the component s, pins, leads, or solder connecti ons.
CHAPTER 3 Installing ERX Modules 3-16 7 Carefully insert an I/O module in one slo t to ensure that the redundancy midplane is aligned co r rec tly; then tighten the screws. A misaligned redundancy midplane can result in bent pins on the boards and poor c ontact betw een th e I/O modules and the redundancy midplane.
The Next Step ERX Edge Routers 3-17 V erifying the Installation T o v erif y th at th e i ns tal lat io n i s c om ple te : 1 T urn on t he pow er switches. The sy stem will reboot. 2 Issue the show redundancy command, and v er ify that t he displa y sho ws t he redundancy hardwar e.
CHAPTER 3 Installing ERX Modules 3-18.
4 Cabling the ERX System This chapte r descr ibes how t o cabl e t he ERX syst em. Befor e you cable the system, ensure that you ha ve com p leted all installation instr uctions identif ied in previous chapt er s. Before Y ou Be gin Befo re you cable the ERX system, read C abling Recommendations in Appendix D, Preparing Y our Site .
CHAPTER 4 Cabling the ERX System 4-2 Cabling Y our ERX System Cabling the system takes only a few min utes. Y ou need these items: • A 1/8" f lat head screwdriver – to conn ect the alarm leads • A 3/8" wrench or 3/8" nut-driver – to loosen and tigh ten hex nuts on Pow e r A a n d Powe r B l e a d s • A No.
Safety Guidelines ERX Edge Routers 4-3 Figure 4-1 Cabling your ERX system Safety Guidelines Obser ve the f ollo wing guidelines when cabling yo ur ERX system. Ground (Earth) Warning: Connect either the fre estanding ERX syst em or the rack to ground (earth), and ensure that a reliable grounding path is ma intained in the rack.
CHAPTER 4 Cabling the ERX System 4-4 Lightning Activity Warning: Do not work on the system or connect or disconnect cables du ring lightning activity . DC Power Disconnection W arning: Before powering on the ERX system, remove power from th e DC circuit by deactiva ting the circuit b reaker on the pane l board that services the DC ci rcuit.
Cabling the Power Input Module ERX Edge Routers 4-5 F ollow the procedure in t his sec tion to connec t po wer ca bles to the system. Ref er to Figure 4 -2 as need ed. Caution: Before you begin this procedure, ens ure that both Power A and Power B switches are in the OFF positio n.
CHAPTER 4 Cabling the ERX System 4-6 Figure 4-2 Power input module Ground Power A leads Power B leads THIS PRODUCT IS EQUIPPED WITH TWO POWER FEEDS. DISCONNECT BOTH FEEDS PRIOR TO SERVICE. POWER A POWER B POWER A POWER B -48VDC -48VDC RTN RTN -48VDC RTN -48VDC RTN W ARNING! NO OPERA TOR ACCESSIBLE COMPONENTS.
Cabling the SRP I/O Module ERX Edge Routers 4-7 Cabling the SRP I/O Module The next st ep in cabling the system is to conn ect cables t o your SR P I/O module. See Fig ure 4- 3 . Note: The alarm function on the SRP I/O module is currently not implemented.
CHAPTER 4 Cabling the ERX System 4-8 Figure 4-3 SRP I/O module ALARMS SRP I/O EXTERNAL TIMING CONSOLE 10/100 BASE T RS-232 T1 100 OHM CLOCK IN A B T G R T G R E1 75 OHM CLOCK IN A B MINOR MAJOR CRITIC.
Cabling the SRP I/O Module ERX Edge Routers 4-9 T o connect the clock source input ports: 1 Depending on the connec tor type, comple te one of the f ollowing tas ks: • E1: Attach t he BN C connector t o Clock A’s External Timing port.
CHAPTER 4 Cabling the ERX System 4-10 Cabling I/O Modules The fo llowing sec tions descr ibe ho w to cable I/O modules with dif ferent types of connec tors. F or information about the connectors on the dif ferent line modules, see Appendix B, Module Specif ications .
Cabling I/O Modules ERX Edge Routers 4-11 T o cable I/O modules with HSSI connectors: 1 Insert t he HSSI connec tor into the selec ted port. 2 T erminate the other end in the appropr iate ne twor k connection. 3 Repea t steps 1 and 2 for the ot her por ts.
CHAPTER 4 Cabling the ERX System 4-12 Figure 4-6 I/O module with RJ-45 connector Cabling RJ-48C Connec tors T o cable I/O modules with RJ-48C connectors: 1 Insert the RJ-48C connector into the selected port. 2 T erminate the other end in the appropr iate ne twor k interface, such as a multiplexer (MUX) de vice.
Cabling I/O Modules ERX Edge Routers 4-13 Cabling L C Duplex Connectors In accordance wit h EN60825-1 , Safe ty of Laser Produc ts - Part 1: Equipment Class , Requirements, and User’s G uide (200 1) , multimode I/O modules with LC connectors are def ined as follo ws: CL ASS 1 LED PRODUCT .
CHAPTER 4 Cabling the ERX System 4-14 Figure 4-8 I/O module with LC full duplex connectors Cabling SC Duplex Connector s In accordance with EN60825-1 , Safe ty of Laser Products - P ar t 1: Equipment Class , Requirements, and User’s G uide (200 1) , multimode I/O modules with SC connectors are def ined as follo ws: CL ASS 1 LED PRODUCT .
Cabling I/O Modules ERX Edge Routers 4-15 War nin g: IEC 825, Class 1 laser fiber con nectors are for connection onl y to Class 1 lase r devices. 1 Insert the TX male f iber connect or into the selected port. 2 T erminate the other end in the appropr iate ne twor k connection.
CHAPTER 4 Cabling the ERX System 4-16 4 T erminate the other end in the appropr iate ne twor k connection. 5 Repea t steps 1 – 4 f or t he RX cable’s SMB conn ector . 6 Repea t steps 1 – 5 f or t he remaining ports. Figure 4-10 I/O module with SMB connectors Cabling X.
The Next Step ERX Edge Routers 4-17 Figure 4-1 1 X.21/V .35 module with 50-pin X.21/V .35 connector Cabling Redundant P or ts Some modules ha ve r edundant por ts. See Appendix B, Module Specif ications for specif icati ons. Cabling bo th ports provides a redundant pa th t o the ERX m od ule .
CHAPTER 4 Cabling the ERX System 4-18.
5 Accessing the ERX System This chapt er provides inf ormation on t he var ious wa ys you can access the system t o manage it. Ma naging y our router includes bo th conf igur ing and monitoring it. F or basic inform ation on the management of t he system, see ERX Syst em Basics Conf iguration Guide, Chapt er 4, Managing the System .
CHAPTER 5 Accessing the ERX System 5-2 F or initial access to the system, you need t o physically connect y our console directly to the system’s RS- 232 por t. This connection allows y ou to use the CLI to se t an IP address on the system. Once y ou conf igure the IP address, y ou can access the system remot ely (f or example, via T elnet).
Console Port Setup ERX Edge Routers 5-3 Connecting Directl y to the ERX System When you connect a console directly to the sy stem, use a cable appropriate for y our ter minal connec tor . The cable must ha ve a f emale DB-9 connector to attach to t he RS-232 port on t he system.
CHAPTER 5 Accessing the ERX System 5-4 address f or the system. The s ystem pow er s up in Us er Exec mode. T o assign an IP addr ess: 1 Enter the enable command at t he User Exec prompt. host1> enable host1# The system is now in Pr ivileged Ex ec mode.
Telnet Setup ERX Edge Routers 5-5 The system is now in Pr ivileged Ex ec mode. 2 Enter the conf igure command. host1# configure terminal Enter configuration commands, one per line. End with CNTL/Z. host1(config)# The system is now in Global Conf iguration mode.
CHAPTER 5 Accessing the ERX System 5-6 Caution: Do not change the IP address for the Ethernet interf ace that you are using to commun icate with the s ystem. If you change the address, you wi ll lose the T elnet session. SNMP The system supports Simple Ne twor k Man agement Prot ocol (SNMP), a standard manageme nt protocol f or IP netw orks.
6 P o w ering Up the System This chapter pro vides instr uc tions for po wering up t he system and inf or mation on electrical specif ications. Before Y ou P ow er Up the System Before pow er ing up t he syste m, y ou sh ould complete the t ask s shown in Ta b l e 6 - 1 .
CHAPTER 6 Powering Up the System 6-2 P ow ering Up This procedure as sumes that t he system is already connect ed to a DC pow er source. See Chapt er 4, Cabling t he ERX System . F or specif ications on t he elec tr ical req uirements f or t he system , see Appendix A, System Specif ications .
Status LEDs ERX Edge Routers 6-3 Figure 6-1 ERX-1400 series power switches Initialization Sequence Each ERX line module is initialized independently . As a result, t he CLI on the SRP module may becom e available bef ore th e line module s hav e comple ted initialization.
CHAPTER 6 Powering Up the System 6-4 T he Ne xt Step If you hav e problems po we r ing up t he syst em, go to Chap ter 8, Tr o u b l e s h o o t i n g , for help.
7 Maintaining the ERX System This chapter des cr ibes th e proce dures t hat you must comp lete to maintain t he ERX system and its components. Ot her maintenance procedures mus t be per f or med by an auth orized Juniper Ne tworks techni cian.
CHAPTER 7 Maintaining the ERX System 7-2 Storing Modules and Components Caution: Failure to store electronic modules and compone nts correctly may lead to damage of these items. Retain the pack aging in which a modu le or component was shipped, and use this pack aging to store the item .
Upgrading NVS Cards on SRP Modules ERX Edge Routers 7-3 War nin g: Do not insert any met al object, such as a screwdriver , or place your ha nd into an open slot or the backplane when th e ERX system is on. Remove jewelry (including ri ngs, necklaces, a nd watches) before worki ng on equipment tha t is connected to power lines.
CHAPTER 7 Maintaining the ERX System 7-4 6 When this SRP module is availa ble, synchr onize th e SRP modules. host1# synchronize 7 When the SRP modules are sync hronized, reboot t he SRP module that you upgr aded. host1# reload slot 6 8 When this SRP module is availa ble, synchr onize th e SRP modules.
Replacing SFPs on GE I/O Modules ERX Edge Routers 7-5 Figure 7-1 NVS card slot on SRP module 4 Remove the NVS card and place it in t he antist atic cont ainer . 5 Insert t he higher -capacity NVS card int o t he slo t. 6 Push the higher -capacity NVS card as fa r as you can in the slot.
CHAPTER 7 Maintaining the ERX System 7-6 R emo ving SFPs T o remove the SFPs: 1 Obtain an antistatic cont ainer for the SFPs you will remov e (see Sto r ing Modules and Com ponents , earlier in this chapter). 2 Put the antist atic wr ist strap on yo ur wr ist, and connec t t he strap to th e ESD g rounding jack on the syste m.
Replacing SFPs on GE I/O Modules ERX Edge Routers 7-7 Installing SFPs T o inst all SFPs: 1 Put the antist atic wr ist strap on yo ur wr ist, and connec t t he strap to th e ESD g rounding ja ck on your system.
CHAPTER 7 Maintaining the ERX System 7-8 Figure 7-4 Installing an SFP on an ERX GE I/O module 4 Insert the SFP as far as y ou can into the I/O module. The SFP should slide smoothly into the I/O module and should click into place. If the SFP does no t slide smoothly into the I/O module, ch eck tha t the orie nt at io n o f the SFP is corr ec t.
Cleaning the System ERX Edge Routers 7-9 • Field descripti ons › gigabitEtherne t interfaceSpe cifier – st atus of the hardware on this interface • up – hardware is operational • down – .
CHAPTER 7 Maintaining the ERX System 7-10 ERX-1400 Series Figure 7-5 and Figure 7-6 sho w t he location of the fan tray in the ERX -1 400 ser ies. Figure 7-5 Location of fan tray in ERX-1400 se ries F.
Replacing Fan Trays ERX Edge Routers 7-11 R emo ving the Fan T r ay T o remov e t he fan tra y: Caution: Do not use the fan tray handle to carry the fan tray assembly .
CHAPTER 7 Maintaining the ERX System 7-12 ERX-700 Series Figure 7-7 shows the location of the fan tray in the ERX -700 ser ies. Figure 7-7 Location of fan tray on the front of the ERX-700 series R emo ving the Fan T r ay Caution: Do not use the fan tray handle to carry the fan tray assembly .
Replacing Fan Trays ERX Edge Routers 7-13 Installing the F an T ray Caution: Do not use the fan tray handle to carry the fan tray assembly . Use the handle only to push the i nto the chassis. T o inst all the fan tray: 1 Ho ld the t ra y v erti ca ll y s o th at the c ap tiv e sc re ws p oi nt to wa rd s y ou and y ou can read te xt on the labels.
CHAPTER 7 Maintaining the ERX System 7-14.
8 T r oubleshooting This chapt er explains ho w y ou can troubleshoot a specif ic problem at system po wer -up, such as abnormal LED activity or no syst em pow er . Diagnos ing Problems The information in this chapter ca n help y ou identify problems b y obser ving diagnostic signs.
CHAPTER 8 Troubleshooting 8-2 LED Activity Module LEDs can sho w you the immediate s tatus of a module and aler t you to a problem with the module or one of its ports. It is helpful to familiarize yourself with LED activity so that you can easily de tect and correct a module-related pr oblem with minimal or no system do wntime.
Understanding Status LEDs ERX Edge Routers 8-3 Under standing Status LEDs When yo u pow er up the system, it r uns a series of tests f or each module installed in t he system. Refer to t he ta bles in t his section t o underst and nor mal and abnor mal LED activity .
CHAPTER 8 Troubleshooting 8-4 All modules REDUNDANT Redundancy Green See Redundancy Status later in this chapter . Note: The REDUNDANT LED on the cOCx/STMx, FE-8, GE/FE, HSSI, OC3 (dual port), OCx/STMx, and X.
Understanding Status LEDs ERX Edge Routers 8-5 The follo wing f igu res show a representative module for each of the t hree var iations: • SRP module ( Figure 8 -1 ) • Ether net line module ( Figure 8-2 ) • Other line modules ( Figure 8-3 ) X.21/V .
CHAPTER 8 Troubleshooting 8-6 Figure 8-1 SRP module LEDs Note: The primary SRP illuminates the REDUNDANT LED only when the SRP detects t hat there is a secondary or st andby SRP module online. The st andby SRP monitors an activity sign al from the primary SRP module to determine it s state; it does not shadow the operations of the primary SRP .
Understanding Status LEDs ERX Edge Routers 8-7 Figure 8-2 FE2 module LEDs Figure 8-3 E3 and T3 module LEDs LED Activity During Booting When t he system boots, it r uns di agnostic tests, and the module stat us LEDs displa y var ious conf igurations.
CHAPTER 8 Troubleshooting 8-8 If the system det ects an error dur ing booting, the F AIL LED turns on. Some failure conditions may cause the board not to boot . In t his case, the LEDs ma y all be of f. The system s hould t hen rese t the board. If the op erational software detects an er ror , the F AIL LED tur ns on.
Understanding Status LEDs ERX Edge Routers 8-9 R edundancy Status Y ou can deter mine the re dundancy state of line modu les by examining the online and redund ant st atus LEDs. See Ta b l e 8 - 5 . Note: The REDUNDANT LED on the cOCx/STMx, FE-8, GE/FE, HSSI, OC3 (dual port), and OCx/STMx modules is nonfunctional .
CHAPTER 8 Troubleshooting 8-10 Monitoring T emperatures of Modules Y ou can view t he temperat ure of each module by issuing th e show environment all and show environment ta ble commands. In addition, t he system gener ates detailed log message s if the temper ature of a module is outside normal operating limits.
Resetting Line Modules and SRP Modules ERX Edge Routers 8-11 R esetting Line Modul es and SRP Modules T wo recessed butt ons on line modules and SRP modules pr ovide the mechanisms fo r resetting. Y ou can use t he NMI button to rese t t he software on the module and the board rese t button to r eset the module.
CHAPTER 8 Troubleshooting 8-12 If ECC de tects a d ouble-bit error in a system that contains a redundant SRP module, the redundant module becomes active and the system continues to operat e. How ever , y ou must still troublesh oot the SRP module with t he double-bit error .
A System Specifica tions Ta b l e A - 1 ERX specifications ERX-1400 Series ERX-700 Series Wei gh t Chassis only Chassis fully configured 42 lb (18.9 kg) 88 lb (39.6 kg) 22 lb (9.9 kg) 46 lb (20.7 kg) Dimensions 22.75 (H) x 19 ( W) x 16 (D) inches (57.
APPENDIX A System Specifications A-2 Airflow • An integral air plenum directs system’s exhaust air below the system and out the back. See Figure D-1 in Appendix D, Preparing Y our Site . • Airflow direction is in through the right side and out through the le ft side.
ERX Edge Routers A-3 T elecommunicat ions Certification • ACA TS 016-1997 • CTR13 – Commission Decision of 9 July 1997 on a common technical regulation for attachment requirements for terminal equipment interface for connection to 2048 kbit/s digital structured ONP leased lines: 97/521/EC – OJ No.
APPENDIX A System Specifications A-4.
B Module Specifica tions This appendix provides inf or mation about line modules, SRP modules, and I/O modules. All line modules, with the exception of the IPSec S e rv i c e a n d T u nn el Se rv i c e m o d u l e , combine wi t h I/O mo dules to provide particular capabilities and connections.
APPENDIX B Module Specifications B-2 cOC12/STM4 F0 OC12/STM4 channelized to DS3, DS1, E1, and DS0 (single mode and multimode; multimode with and without SONET APS redundancy) ASIC ERX-700 series ERX-1.
Module Assemblies and Model Compatibility ERX Edge Routers B-3 HSSI High Speed Serial Interface Non-ASIC ERX-700 series ERX-1410 system SRP-5G SRP-5G+ SRP-10G IPSec Service IPSec Tunnel Service ASIC E.
APPENDIX B Module Specifications B-4 P erfor mance Specificat ions Ta b l e B - 2 provides de ta ils about the per formance of the line module assemblies.
Performance Specifications ERX Edge Routers B-5 cOC12/STM 4 F0 (single mode and multimode, multimode with and without SONET APS redundancy) OC12/STM4 OC3/STM1 DS3 T1, E1 DS0 HDLC Framing • 1:N redun.
APPENDIX B Module Specifications B-6 OC3/STM1 POS (single mode and multimode)) OC3/STM-1, HDLC Framing 1:N redundancy 120 W OC12/STM4 A TM (single mode and multimode) OC12/STM-4, A TM:AAL-5 • 1:N re.
Connection Information ERX Edge Routers B-7 Connection Infor mation Ta b l e B - 3 shows the names of the line modules and I/O modules that you can combine to form the dif ferent module a ssemblies. This table also provides cabling specif ications for the I/O modules.
APPENDIX B Module Specifications B-8 cOC3/STM1 single mode long reach cOCx/STMx F0 cOC3 STM1 F0 I/O LONG HAUL 4 SC full duplex • Tx power: › min: –5.0 dBm › max: 0 dBm • Center wavelength: 1310 nm • Rx input power: › min: –34 dBm › max: –7 dBm • Fiber type: 9-micron core • Rated for 40 km (24.
Connection Information ERX Edge Routers B-9 cOC12/STM 4 single mode intermediate reach cOCx/STMx F0 cOC12 STM4 F0 I/O SINGLE MODE 1 SC full duplex • Tx power: › min: –15 dBm › max: –8 dBm • Center wavelength: 1310 nm • Rx input power: › min: –31 dBm › max: –8 dBm • Rated for 15 km (9.
APPENDIX B Module Specifications B-10 CT3 CT3 CT3/T3 I/O 3 BNC 75 ohm • The line interface unit supports two line build-outs: › 0–68.5 m (0–225 feet) › 69–137 m (226–450 feet) • Signal strength is software controlled. • The transmitted signal complies with ANSI T1.
Connection Information ERX Edge Routers B-11 E3 FRAME (12 ports) COCX-F3 E3-12 FRAME I/O 12 BT43 SMB (cable that adapts to 75-ohm BNC is available) The transmitted signal complies with ITUT G .703: Physical/electrical characteri stics of hierarchical digital interfaces (November 2001) for cable lengths from 0–137 m (0–450 feet).
APPENDIX B Module Specifications B-12 GE 1000 Base-LH GE/FE GE I/O SFP a 1 active 1 redundant LC full duplex • Tx power › min: –9.5 dBm › max: –3 dBm • Center wavelength: 1300 nm • Rx input power › min: –20 dBm › max: –3 dBm • Rated for 10 km (6.
Connection Information ERX Edge Routers B-13 GE single mode b GE/FE GE I/O SINGLE MODE 1 active 1 redundant SC full duplex • Tx power › min: –1 1 dBm › max: –3 dBm • Center wavelength: 1300 nm • Rx input power › min: –20 dBm › max: –3 dBm • Rated for 550 m (601 yards) over 62.
APPENDIX B Module Specifications B-14 OC3/STM1 AT M multimode OCx/STMx AT M OC3-4 I/O MUL TI MODE 4 SC full duplex • Tx power: › min: –19 dBm › max: –14 dBm • Center wavelength: 1310 nm • Rx input power: › min: –30 dBm › max: –14 dBm • Rated for 2 km (1.
Connection Information ERX Edge Routers B-15 OC3/STM1 POS multimode OCx/STMx POS OC3-4 I/O MUL TI MODE 4 SC full duplex • Tx power: › min: –19 dBm › max: –14 dBm • Center wavelength: 1310 nm • Rx input power: › min: –30 dBm › max: –14 dBm • Rated for 2 km (1.
APPENDIX B Module Specifications B-16 OC12/STM4 AT M multimode without SONET APS redundancy OCx/STMx AT M OC12 STM4 I/O MUL TI MODE 1 SC full duplex • Tx power: › min: –19 dBm › max: –14 dBm • Center wavelength: 1310 nm • Rx input power: › min: –30 dBm › max: –14 dBm • Rated for 2 km (1.
Connection Information ERX Edge Routers B-17 OC12/STM4 AT M single mode, intermediate reach with SONET APS redundancy OCx/STMx AT M OC12 STM4 APS SINGLE MODE 1 active 1 redundant SC full duplex • Tx.
APPENDIX B Module Specifications B-18 OC12/STM4 POS multimode with SONET APS redundancy OCx/STMx POS OC12 STM4 APS MUL TI MODE 1 active 1 redundant SC full duplex • Tx power: › min: –19 dBm › max: –14 dBm • Center wavelength: 1310 nm • Rx input power: › min: –30 dBm › max: –14 dBm • Rated for 2 km (1.
Connection Information ERX Edge Routers B-19 SRP (5 Gbps) b SRP-5G SRP I/O 7 • T erminal blocks •B N C • Wire wrap posts • RJ-45 • RS-232 (DB-9) See Chapter 4, Cabling the ERX System . SRP (5 Gbps) SRP-5G+ SRP I/O 7 • T erminal blocks •B N C • Wire wrap posts • RJ-45 • RS-232 (DB-9) See Chapter 4, Cabling the ERX System .
APPENDIX B Module Specifications B-20 T3 A TM (3 ports) T3 A TM CT3/T3 I/O 3 BNC 75 ohm • The line interface unit supports two line build-outs: › 0–68.5 m (0–225 feet) › 69–137 m (226–450 feet) • Signal strength is software controlled.
Connection Information ERX Edge Routers B-21 Cable Lengths for X.21/V .35 Ca bles Ser ial signals can tra vel a limite d distance wit hout signif icant deg radation. Slower ser ial signals can trav el far ther w ithout degr adation than faster serial signals.
APPENDIX B Module Specifications B-22.
C Cable Pinouts This appendix lists the cables and connec tor pinout assig nments for the cables used with t he ERX -700 ser ies and ERX -1 400 ser ies.
APPENDIX C Cable Pinouts C-2 Figure C-1 SRP I/O module serial port Ta b l e C - 2 lists t he pinout f or t he ser ial cable’s RS-232 connec tor . Once you ha ve conf igured an IP address on t he system, you can connect a console ru nning T elnet to the 1 0/1 00Base- T Et hernet por t on the SRP I/O module.
SRP I/O Module ERX Edge Routers C-3 Figure C-2 SRP I/O module Ethernet port Ta b l e C - 2 lists t he pinout f or t he Ether net cable’s RJ-45 connec tor .
APPENDIX C Cable Pinouts C-4 Ta b l e C - 3 lists th e pinout f or t he crosso ver adapter . Ta b l e C - 4 lists the pinout for the straight-through ad apter . CT1 and CE1 I/O Modules CT1 I/O modules ha ve 2 4 RJ-48C female connect ors. CE1 I/O modules hav e either 20 RJ-48C female connectors or tw o 25-pair female T elco connectors.
CT1 and CE1 I/O Modules ERX Edge Routers C-5 Figure C-3 CT1 I/O module ports Ta b l e C - 5 lists the pi nout for the CT1/CE 1 connector . F or CE1 I/O modules wit h T elco connectors, the other ends of t he cables are atta ched to a balun panel t hat splits t he signals from two T elc o connectors to 20 pairs of BN C connectors.
APPENDIX C Cable Pinouts C-6 Figure C-4 CE1 I/O module with T elco connectors Figure C-5 shows the location of the 20 pair s of BN C connectors on a balun panel. The cables from the CE1 I/O module are plugged int o the two 50-pin T elco connectors on t he other side of t he panel.
CT1 and CE1 I/O Modules ERX Edge Routers C-7 9 Port 4 RX TIP 34 Port 4 RX RING 10 Port 4 TX TIP 35 Port 4 TX RING 11 Port 5 RX TIP 36 Port 5 RX RING 12 Port 5 TX TIP 37 Port 5 TX RING 13 Port 6 RX TIP.
APPENDIX C Cable Pinouts C-8 15 Port 17 RX TIP 40 Port 17 RX RING 16 Port 17 TX TIP 41 Port 1 7 TX RING 17 Port 18 RX TIP 42 Port 18 RX RING 18 Port 18 TX TIP 43 Port 1 8 TX RING 19 Port 19 RX TIP 44 .
D Pr eparing Y our Site This chapte r provides inf or mation about preparing your site before installing the ERX system. W e recommend that you conside r all requirements and sp ecif ications indicated in this appendix before inst a llin g t he sy stem.
APPENDIX D Preparing Your Site D-2 • Ensure that all IP envir onment require ments are me t, such as Autonomous Syst em (AS) number , port IP address and mask, management Ether net port IP address and mask, and broadcast address.
Rack Requirements ERX Edge Routers D-3 Lightning Activity Warning: Do not work on the system or connect or disconnect cables du ring lightning activity . DC Power Disconnection W arning: Before powering on the ERX system, remove power from th e DC circuit by deactiva ting the circuit b reaker on the pane l board that services the DC ci rcuit.
APPENDIX D Preparing Your Site D-4 • The distance be tween the mounting holes in the tw o posts must be 1 8.3 1 inches ±.063 inch, as specif ied in t he EIA 3 1 0-C. • Do not use an enclosed rack for the ERX -700 ser ies. It does not provide adeq uate ventilation.
Rack Requirements ERX Edge Routers D-5 Figure D-1 Fully loaded 84-inch rack OC3 SRP SRP CT3 CT3 CT3 O C 3 S R P S R P C T 3 C T 3 C T 3 S R P S R P O C 3 C T 3 C T 3 C T 3 7-ft. (2.1 m) rack Fan array unit (6 fans) Plenum Air intake Air output 3- to 4-ft.
APPENDIX D Preparing Your Site D-6 Figure D-2 ERX-700 series and ERX-1400 series systems installed in 84-inch rack OC3 SRP SRP CT3 SRP SRP CT3 CT3 CT3 O C 3 S R P S R P C T 3 S R P S R P C T 3 C T 3 C T 3 OC3 CT3 SRP SRP CT3 CT3 CT3 CT3 CT3 SRP SRP CT3 CT3 CT3 CT3 OC3 7-ft.
Cabling Recommendations ERX Edge Routers D-7 Cabling R ecommendations Y ou may wa nt to consult the document GR-63 (LSSGR, FD-1 5): Ne twor k Equipment Building Syst em (NEBS) Requirements: Ph ysical Protec tion, Issue 1 , Oct ober 1 995 f or additional cable recommendations.
APPENDIX D Preparing Your Site D-8.
E Installing ERX System Softw ar e Caution: Check the Release Notes fo r extra information abo ut install ing and upgrading the software. This appendix provides inf orm ation on ho w to install new soft ware on the Juniper Ne twor k s ERX systems.
APPENDIX E Installing ERX System Software E-2 example, if the release number is x.y .z, the name of t he direct or y is x-y-z. T o identify t he sof tware releas e f ile: 1 Access t he sof tware director y . 2 Fi n d th e file s wi th th e e xte nsi on .
Installing Software When a Firewall Exists ERX Edge Routers E-3 9 Install the sof tware release f ile to the system space on the ERX system. 10 Sa ve the current conf iguration.
APPENDIX E Installing ERX System Software E-4 4 Set an IP address on the inte rfac e. host1# configure Configuring from terminal or file [terminal]? Enter configuration commands, one per line.
Installing Software When a Firewall Exists ERX Edge Routers E-5 If the netw ork host is listed, go to step 8 . Other wise, proceed with step 6 . 6 Add an entr y to the Static Host T able so that the ERX system can access t he networ k host. The host command allo ws you to specify the networ k host name and IP address.
APPENDIX E Installing ERX System Software E-6 direct or y . If you specify a subdirector y that does not exist, t he ERX system crea tes the directory .
Installing Software When a Firewall Does Not Exist ERX Edge Routers E-7 3 Press <CTRL -Z> to return to Privileged Exec mode. 4 Check that t he ERX sys tem is ready t o boot with t he new software release. host1# show boot If the old software version is still listed, v er ify that you comple ted the previous st eps cor rectl y .
APPENDIX E Installing ERX System Software E-8 T o inst all t he software, per f or m the follo wing task s: 1 Obtain t he required inf orm ation f or the inst allation. 2 Access the Pr ivileged Ex ec CLI command mode. 3 Conf igure IP on an int er face.
Installing Software When a Firewall Does Not Exist ERX Edge Routers E-9 2 Det er mine the port number of t he module. 3 Determine whether the inter face already has an IP address. host1# show ip interface fastEthernet 6/0 Note: If an IP interface is not con figured, you see the message: “Inva lid interface.
APPENDIX E Installing ERX System Software E-10 If the netw ork host is listed, go to step 8 . Other wise, proceed with step 6 . 6 Add an entr y to the Static Host T able so that the ERX system can access t he networ k host. The host command allo ws you to specify the networ k host name and IP address.
Installing Software When a Firewall Does Not Exist ERX Edge Routers E-11 T ask 7: Save the Cur rent Configur ation T o sav e t he current conf iguration, use the copy running-conf iguration command: host1# copy running-configuration filename.
APPENDIX E Installing ERX System Software E-12 Installing Software in Boot Mode T o inst all the ERX software in Boot mode, y ou must access the CLI via the local console. T o install t he sof tware: 1 Obtain t he required inf orm ation f or the inst allation.
Installing Software When a Firewall Does Not Exist ERX Edge Routers E-13 T ask 3: Assign an IP Addr ess When y ou assign an IP addr ess to the ERX system in boot mode, t he address is conf igured on t he F ast Ether net port of t he pr imar y SRP module.
APPENDIX E Installing ERX System Software E-14 The software release will be copie d from the netw ork host t o the ERX system. This process can take sev eral minutes. T ask 7: Reboot the System T o reboot the system using the newly installed software: 1 Run the boot system command, specifying t he .
Upgrading Systems That Are Operating with Two SRP Modules ERX Edge Routers E-15 T o tr ansfer r elease f iles from a source ERX syst em to a destination ERX system, f ollow the instr uctions in Installing Software When a Fire wall Does N ot Exis t , wi th the f ol lo wi n g c ha nge s: • Substitute the source ERX syst em for the netw ork host.
APPENDIX E Installing ERX System Software E-16 The redundaant SRP module will automatically reboot, because the software release that it is conf igur ed to r un dif fers from t he soft ware release it is r unning. 6 W ait for t he redun dant SRP modul e to boot, initialize, and reach th e sta ndby state.
F Dec lar a tion of Conf or mity Declaration of Conformity accordin g to ISO/IEC Guide 22 and EN4514 Manufacturer ’s Name: Juniper Networks, Inc. Manufacturer ’s Address : Juniper Networks, Inc.
APPENDIX F Release x.x.x Declaration of Conformity F-2 Supplementary Information: The products herewith comply with the requirements of the Low V oltage Directive (73/23/EEC) , the EMC Directive (89/336/EEC) , and the RTT E D ir e ct iv e (1999/5/EEC) , and carry the CE markings accordingly .
Inde x Number s 1 0/1 00BASE- T port 4-7, 4-9 A access, manage ment 1-1 1, 5-1 to 5-6 setting up console 5-2 to 5-4 SNMP 1-1 1, 5-6 Te l n e t s e t u p 5 - 4 accessing an FTP server .
Index 2 cur rent (electrica l) requirements A-2 customer suppor t 1-xix D DCE status 8-4 Declaration of Conformity , EC F-2 det ecting double-bit error 8-1 1 Device Management Sys tem, NMC-RX 1-1 1 diagnosing problems.
ERX Edge Routers 3 fans failure 8-4, 8-8, 8-1 0 installing 7-1 1, 7-1 3 location 1-1 5 redundancy 1 -1 5 removing 7- 1 1, 7-12 fan tr ay 1 -1 5 hot-swapping 7-9 far end recei ve failure. S ee FERF FERF (far end receiv e failure) 8-5, 8-9 f low , air .
Index 4 installing spare 3-1 5 LEDs 1-7, 8-2, 8 -3 to 8-9 models B-7 to B-2 1 perfor mance rate 1-2, 1-4 performance specif ications B-4 to B-6 pow er use B-4 to B-6 redundancy 1-1 3, 3-1 4 to 3-1 7, 8-9 removing 3-1 3 slot groups 3-2 to 3-4 uplink 1-7 linking to an FTP server .
ERX Edge Routers 5 source A 8-4 , 8-8 source B 8-4, 8-8 specif ications A-2 PO WER A LED 8-4 PO WER B LED 8-4 pow er ing do wn ERX system 6-3 pow er ing up ERX system 6-1 to 6-4 pow er input module, c.
Index 6 SRP modules 1-7 , 1-8 to 1-9 compatibility wi t h ERX models B-3 to B-4 compatibility with line modules and I/O modules B-1 to B-4 erro rs on 8-1 1 installing 3-8 to 3-1 0 LEDs on 1-7, 8-4, 8-.
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 ERX-1440 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 ERX-1440 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Juniper Networks ERX-1440 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Juniper Networks ERX-1440 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Juniper Networks ERX-1440, 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 ERX-1440.
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 ERX-1440. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Juniper Networks ERX-1440 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.
