Benutzeranleitung / Produktwartung ERX-1440 des Produzenten 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.
Canadian Depar tment Of Communications R adio Interference Regulat ions This Class B (or Class A, if so indicated on the registration lab el) digital apparat us meets the requirements of the Canadian Interference-Causing Equipmen t Regulations.
D.O .C. Explanator y Notes: Equipment Attachment Limita tions The Canadian Department of Communications label identifies certified equipment. This certif ication meets cert ain telecommunication network protective, oper ational and safety requirements.
SOFTWARE LICENSE AGREEMENT 1 JUNIPER NETWORKS, INC. IS WILLING TO LICENSE THE ENCL OSED SOFTWARE AND ACCOMP ANYING USER DOCUMENT A TION (COLLECTIVEL Y , THE “PROGRAM”) TO YOU ONL Y UPON THE CONDITION THA T YOU ACCEPT A LL OF THE TERMS AND CONDITI ONS OF THIS LICENSE AGREEMENT .
must return the Software, inclu ding any User Documentation, and all co pies or portions thereof to Juniper Networks. T ermination of this License Agre ement shall not prejudice Juniper Networks' rights to damages or ot her available remedy .
8. Export Control. Software, includi ng technical data, is subject to U.S. export control laws, including the U.S. Expor t Administration Act and it s associated regulations, and may be subject to export or import regulations in ot her countries.
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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-.
Ein wichtiger Punkt beim Kauf des Geräts Juniper Networks ERX-1440 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie Juniper Networks ERX-1440 noch nicht gekauft haben, ist jetzt ein guter Moment, um sich mit den grundliegenden Daten des Produkts bekannt zu machen. Schauen Sie zuerst die ersten Seiten der Anleitung durch, die Sie oben finden. Dort finden Sie die wichtigsten technischen Daten für Juniper Networks ERX-1440 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von Juniper Networks ERX-1440 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über Juniper Networks ERX-1440 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon Juniper Networks ERX-1440 besitzen, und noch keine Gelegenheit dazu hatten, die Bedienungsanleitung zu lesen, sollten Sie es aufgrund der oben beschriebenen Gründe machen. Sie erfahren dann, ob Sie die zugänglichen Funktionen richtig genutzt haben, aber auch, ob Sie keine Fehler begangen haben, die den Nutzungszeitraum von Juniper Networks ERX-1440 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit Juniper Networks ERX-1440. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei Juniper Networks ERX-1440 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
