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3Com ® Switch 8800 Family Installation Guide Switch 8807 Switch 8810 Switch 8814 www.3Com.com Part No. 10015 593, Rev. AA Published: January 2007.
3Com Corporation 350 Campus Drive Marlbor ough, MA USA 01752-3064 Copyright © 2006-2007, 3Com Corporation . All rights reserved . No part of this doc umentati on may be reprod uced in any form or by .
C ONTENTS A BOUT T HIS G UIDE Conventions 5 Related Docum entation 6 1 P RODUCT O VERVIEW Preface 7 General Architecture 10 Fabric Modules 17 System Specifications 24 Software Featur es 25 2 I/O AND A.
4 S WITCH I NSTALLATION Confirming Installation Preparation 51 Installation Flow 51 Mounting the Switch in User -Supplied Cab inet 52 Connecting PGND W ire and Power Cor d 57 Installing Cabling Rack 6.
A BOUT T HIS G UIDE This guide describes the 3Com ® Switch 8800 and how to install hardware, configure and boot softwar e, and maintain software and hardwar e .
6 A BOUT T HIS G UIDE Related Documentation The following manuals offer additional infor mation necessary for managing your Switch 8800: ■ Switch 8800 Command Reference Guide — Provides detailed descriptions of command line inte rface (CLI) commands , that yo u requir e to manage your Switch 8800.
1 P R ODUCT O VERVIEW Preface 3Com Switch 8800 Family of Routing Switches (hereinafter referr ed to as Switch 8800 Family) are intelligent, multi-laye r modular LAN switches is ideal for enterprise envir onments where non-stop avai lability of critical applications and the highest performance, security , and granular control are r equired.
8 C HAPTER 1: P RODUCT O VERVIEW Currently , the Switch 8800 Family include the following models: ■ Switch 8807: This model provides up to 600 Gbps switching capacity .
Preface 9 ■ Switch 8814: This model provides up to 1.44 Tbps switching capacity . It supports (for example) up to 576 GE ports and 48 x 10GE ports. Figure 3 3Com Switch 8814 (14-Slot Chassis).
10 C HAPTER 1: P RODUCT O VERVIEW General Architecture The Switch 8800 Family use integrated ch assis, which can be subdivided into power ar ea, board a rea, backplane and fan a rea.
General Architecture 11 Switch 8810 Figure 5 Switch 8810 slots ■ The Switch 8810 chassis provides ten slots in its boar d area: The middle two accommodate fabric modules, which can operate in 1+1 redundancy mode; the remaining eight accommodate I/O or application modules, which you can select from various available mode ls.
12 C HAPTER 1: P RODUCT O VERVIEW Switch 8814 Figure 6 Switch 8814 slots ■ The Switch 8814 chassis provides 14 slots in its boar d area: The middle two accommodate fab ric modules, which can operat e in 1+1 redundancy mode; the remaining 12 acc ommodate I/O or application modules, which you can select from various available models.
General Architecture 13 The Switch 8807 uses a passive backplane, which provides five I/O module interfaces, two fabric interfaces, one fan interface, and three -48V power interfaces (two for PSUs and one for PoE entry module).
14 C HAPTER 1: P RODUCT O VERVIEW ■ A Switch 8800 suppor ts up to 4500 W (220 V)/2250 W (110 V) power to its PDs. It determines whethe r to deliver power to a ne wly detected PD depending on the power it currently supplied.
General Architecture 15 Ta b l e 2 describes typical equipment configurat ions and specifications of exter nal PoE power system. The exter nal PoE power system has monitor fun ction. It provides one system monitoring module, one RS232 and two R S 485 monitoring interfaces.
16 C HAPTER 1: P RODUCT O VERVIEW Role and function The MBUS system is power ed by 5 V from the MBUS on the fabric. The 5 V power on the two fabrics ar e redundant to each other . Each MBUS module is attached to the MBUS, which contains two control lines: MBUS0 and MBUS1.
Fabric Modules 17 Fabric Modules The Switch Fabric serves as the core of the Switch 8800 Family .The following fabric models are av ailable to the Switch 8800 Family: ■ 3C17508 - 3Com Switch 8800 360 Gbps Fab ric ■ 3C17539 - 3Com Switch 8800 720 Gbps Fab ric These fabrid modules provide: ■ Route calculating and forw arding table maintenance.
18 C HAPTER 1: P RODUCT O VERVIEW Figure 10 360 Gbps Switch Fabric panel Compact Flash (CF slot) The 360 Gbps Switch Fabric module provides a CF slot to accommodate a standard CF car d, where you can save logging information, host version information, alarming and other diagn ostic information and co nveniently upgrade software online.
Fabric Modules 19 ■ Console port The Console port uses an RJ-45 connector . It can be connected to a background terminal for system debugging, maintena nce, management, and host software loading. n Y ou can choose your own baud rate for the Co nsole port.
20 C HAPTER 1: P RODUCT O VERVIEW ■ Status LEDs for I/O module The 360 Gbps Switch Fabric mod ule has 12 pairs of LEDs to indicate th e operating status of 12 I/O module. ■ Status LEDs for the 360 Gbps Switch Fabric module Y ou can lear n the operat ing status of 360 Gbps Switch Fabric module by reading the SFS, ACT , ALM and RUN LEDs on it.
Fabric Modules 21 720 Gbps Switch Fabric T echnical specific ations This model applies to the 3C17539 . See T able 5 for its specifications. Panel On its panel, the 720 Gbps Switch Fabric provides a C.
22 C HAPTER 1: P RODUCT O VERVIEW The following table describes the status LEDs for the management 10Base-T/100Base-TX port. ■ RS232/485 port The RS232/485 port uses RJ-45 connector , for connecting exter nal PoE power frame when supported and monitoring its status.
Fabric Modules 23 The AUX port uses an R J-45 connector . The port can serve as a backup port f or the Console port to connect a background terminal, or directly connect a modem device, for remote system debugging , configuration, maintenance and management .
24 C HAPTER 1: P RODUCT O VERVIEW Y ou can lear n the operat ing status of 720 Gbps Switch Fabric module by reading the SFS, ACT , ALM and RUN LEDs on it. The following table giv es a summary of the four LEDs. RESET button Y o u can press the RESET butto n on the panel to reset the 720 Gbps Switch Fabric.
Software Features 25 n Note 1: The switching capacity in the above table is calc ulated based on two load-sharing fabrics. Note 2: The 7-slot has a dditional backplane traces per slot compared to the 14-slot and the 10- slot chassis.
26 C HAPTER 1: P RODUCT O VERVIEW Flow control IEEE 802.3x flow control (full duplex) Back pressure flow c ontrol (half duplex) Broadcast/multicast suppress ion Supported Multicast Internet gr oup man.
Software Features 27 n All specifications are subject to changes without notice. For up-to-date information, pleas e contact 3Co m mark eting or technical suppo rt personnel. Security Hierarchical user management and password protection Password control 802.
28 C HAPTER 1: P RODUCT O VERVIEW.
2 I/O AND A PPLICATION M ODULES Overview The Switch 8800 Family are modular switches that are designed following industry standards. The following I/O modules ar e available to the Switch 8800 Family: 3C17511 1 -port 10GBASE-X (XENP AK) Specifications This section provides specifications for the 1-por t 10GBASE-X (XENP AK) 3C17511 module.
30 C HAPTER 2: I/O AND A PPLICATION M ODULES Panel and LEDs Figure 12 3C17511 module panel The 3C17511 module has two port LEDs for the 10GE port on its panel.
3C17513 12-port 1000BASE-X (SFP ) Module 31 Panel and LEDs Figure 13 3C17512 module panel The 3C17512 module has two LEDs fo r each optical por t on its pan el.
32 C HAPTER 2: I/O AND A PPLICATION M ODULES Matching Cable See T able 64 on page 45 for the SFP optica l modules available to the SFP optical ports on the 3C17513 module and their matching cable types, which you can select as requir e d.
3C17516 24-port 10/100/1000BASE-T Mo dule 33 optical modules available to the SFP optical ports and their matching cable types, see Ta b l e 64 on page 45 . 3C17516 24-port 10/100/10 00BASE-T Module This section provides specifications for the 24-port 10/100/1000B ASE-T module (3C17516).
34 C HAPTER 2: I/O AND A PPLICATION M ODULES Panel and LEDs Figure 17 3C17525 module panel The 3C17525 module has two port LEDs for the 10GE port on its panel.
3C17527 2-port 10GBASE-X (XFP) Advanced Mo dule 35 Panel and LEDs Figure 18 3C17526 module panel The 3C17526 module has two LEDs fo r each optical por t on its pan el. Matching Cable For details about XFP optica l modules available to the XFP optical ports on the 3C17526 module an d their matching cable types, see Ta b l e 64 on page 45 .
36 C HAPTER 2: I/O AND A PPLICATION M ODULES Matching Cable See T able 64 on page 45 for the XFP optical modules that are available for the 10 Gbps XFP optical ports on the 3C17527 module and their mat ching cable types, which you can select as required.
3C17530 24-port 1000BASE-X (SF P) Advanced Module 37 3C17530 24-port 1000BASE-X (SFP) Advanced Module This section provides specifications fo r the 24-port 1000BASE-X (SFP) Advanced module (3C17530). Specifications The 3C17530 Advanced Module provide 24 1000BASE-X (SFP) ports.
38 C HAPTER 2: I/O AND A PPLICATION M ODULES Panel and LEDs Figure 22 3C17531 module panel The 3C17531 module has one LED for each port on its panel. 3C17532 48-port 10/100/100 0 BASE-T (RJ-45) Access Module This section provides specifications for the 48-port 10/100/1000 BASE-T (RJ-45) Access module (3C17532).
3C17533 24-port 1000BASE-X (SFP) IPv6 Module 39 Panel and LEDs Figure 23 3C17532 module panel The 3C17532 module has one LED for each port on their panel. 3C17533 24-port 1000BASE-X (SFP) IPv6 Module This section provides specifications for the 24-port 1000 BASE-X (SFP) IPv6 module (3C17533).
40 C HAPTER 2: I/O AND A PPLICATION M ODULES Matching Cable Y ou can select appropriate SFP optical modules for the 1000 Mbps SFP optical ports on the 3C1753 3 module according to your needs. For a description of SFP the optical modules available f or the SFP optica l ports and their matchin g cable types, see Ta b l e 64 on page 45 .
3C17538 48-port 1000BASE-X (SFP) IPv6 Module 41 Panel and LEDs Figure 26 3C17536 module panel The 3C17536 module has two LEDs fo r each optical por t on its pan el. Matching Cable For details about XFP optica l modules available to the XFP optical ports on the 3C17536 module an d their matching cable types, see Ta b l e 64 on page 45 .
42 C HAPTER 2: I/O AND A PPLICATION M ODULES Panel and LEDs Figure 27 3C17538 module panel The 3C17538 module has one LED for each 1000 Mbps optical port on its pan el. Matching Cable Y ou can select appropriate SFP optical mo dules for the 1000 Mbps SFP/LC optical ports on the 3C17538 mod ule accordingly to your needs.
Application Modules 43 3C17546 Firewall Application Module T echnical specific ations The 3C17546 Firewall Application Module pr ovides eight Gigabi t SFP/LC optical ports.
44 C HAPTER 2: I/O AND A PPLICATION M ODULES Front panel Figure 30 Fr ont panel of the 3CR1754766 The 3CR1754766 provides eight 100 0Base-X ports, one Console port, one AUX port, three 10/100Base-TX ports and four status LEDs (A TT ACK, ACT , ALM and RUN) from left to right on the fr ont panel.
Transceivers 45 Fron t panel Figure 31 Fr ont panel of the 3C17548 T ransceivers Ta b l e 64 documents the 3Com Switch 8800 Family transceivers. Ta b l e 64 T r ansceiver Specifications Optical Power .
46 C HAPTER 2: I/O AND A PPLICATION M ODULES Switch 8800 Port Densities Ta b l e 65 describes the modules that are av ailable for the Switch 8800, their maximum port densities, and whether or no t the module supports MP LS or IPv6.
3 I NSTALLATION P R EPARATION Safety Recommendations T o avoid possible bodily injury and devi ce impairment, please read the following safety recommendations car e fully before installing the Switch 8800 Family . The recommendations do not cover ev ery possible hazardous condition.
48 C HAPTER 3: I NSTALLATION P REPARATION Wearing an ESD-Preventive Wrist Strap T o prevent the electr onic compon ents from being damaged by the electr o static discharge (ESD), take ESD mea sures fo.
Examining Installation Site 49 Cleanness Requiremen ts Dust is a hazar d to the operating safety of the switch. The indoor dust accumulated on the chassis can cause electr ostatic absorption, which may r esult in the poor co ntact of the conn ector or me tal cont act point.
50 C HAPTER 3: I NSTALLATION P REPARATION Power Supply Requirements The Switch 8800 Family adopts redundant PSUs for AC PSU: Rated voltage: 100 V AC to 240 V AC, 50 Hz or 60 Hz Maximum tolerance: 90 V.
4 S WITCH I NSTALLATION The Switch 8800 Family shall be installed indoors in a fixed place. Confirming Installation Pre paration ■ Make sure that you have read Chapter 3 Installation Preparation carefully . ■ All requir e ments mentioned in Chapter 3 Installation Preparation have been met.
52 C HAPTER 4: S WITCH I NSTALLATION Mounting the Switch in User -Supplied Cabinet Cabinet Configuration Guideline c CAUTION: ■ Even if no PoE external power supp ly is installed, it is r e commended that you reserve the PoE power supply slot (just cover a 4 U blank filler panel) in the cabinet for later PoE expansion.
Mounting the Switch in User-Supplied Cabinet 53 Figure 33 One Switch 8807 chassis in a cabinet Guideline: The space marked in Figure 33 must be reserved, and the r emaining is at your disposal.
54 C HAPTER 4: S WITCH I NSTALLATION Figure 34 T wo Switch 8807 chassis in a cabinet Guideline: The sp ace marked in Figure 34 must be reserved, and the r emaining is at your disposal.
Mounting the Switch in User-Supplied Cabinet 55 Figure 35 One Switch 8810 chassis in a cabinet Guideline: The space marked in Figure 35 must be reserved, and the r emaining is at your disposal.
56 C HAPTER 4: S WITCH I NSTALLATION Figure 36 One Switch 8814 chassis in a cabinet Guideline: The sp ace marked in Figure 36 must be reserved, and the r emaining is at your disposal. Mounting the Switch in the Cabinet T ake the following steps to install the Switch 8800 Family in a 19-inch cabinet.
Connecting PGND Wire and Power Cord 57 Step 6: Align the mounting ears with the square holes in the posts of the cabinet, and fasten the screws in the holes to fix the switch in the cab inet. Connecting PGND Wire and Power Cor d Connecting PGND Wire c CAUTION: For the safety of operators and equipment, the switch must be well grounded.
58 C HAPTER 4: S WITCH I NSTALLATION Figure 37 Gr ound the switch when ground bar is available ■ If there is no ground bar b ut earth near by and the grounding body is allow ed to be buried, you can simply hammer an angle iron or steel pipe no shorter than 0.
Connecting PGND Wire and Power Cord 59 power supply has been well grounded at the power distribution room or AC power supply transfor mer side. Figure 39 Gr ound the switch via AC PE wire Connecting AC Power Cord c CAUTION: ■ For lightning protection, the AC power should be led through an exter nal lightning device into the switch.
60 C HAPTER 4: S WITCH I NSTALLATION Figure 40 Connect AC power cor d to the Switch 8807 Figure 41 Connect AC power cor d to the Switch 8810/Switch 8814 (1) Connector-retention clamp (2) Input LED (3).
Connecting PGND Wire and Power Cord 61 Connecting PoE Power Cord The Switch 8807/Switch 8810/Switch 8814 uses PSE4500 -A external Po E power supply , which is connected to the switch through the PoE module at the front bottom of the switch to provide power to PDs (powered devices) under the switch.
62 C HAPTER 4: S WITCH I NSTALLATION Figure 43 Fr ont panel of external PoE Power Rack (3C17509) Installing Cabling Rack For your convenie nce, cabling racks ar e sh ipped with the Switch 8800 Family .
Installing PoE Lightn ing Protection Box 63 c CAUTION: In case of bodily injuries, do not touch any naked wi re, terminal or other parts of the produ ct with hazardou s voltage labels. Step 1: Wear the ESD-preventive wrist strap, making sure that it makes good skin contact; take the fan tray out from the packing bag.
64 C HAPTER 4: S WITCH I NSTALLATION at the front panel, and then slide it smoothly along the guide rail to the slot, until it fits into the chassis, with its plug fu ll y touching the sock et in side the chassis. See Figure 46. Figure 46 Install PoE lightning protection box 3 Fasten the screw on top of the PoE lightnin g protection box.
Connecting Interface Cables 65 Connecting Interface Cables Connecting Console Cable Introdu ction Console cable is an 8-core shielded cable. At on e end of the cable is a crimped RJ-45 connector that is to be plugg ed into the console port of the switch.
66 C HAPTER 4: S WITCH I NSTALLATION n The PC serial port is not hot-swappable, so you are not allowed to insert or remove the console cable into or from the PC serial po rt. When conne cting the con sole cable, fir st connect the DB 9/DB25 end to th e PC serial port and then the RJ45 end to t he console port of the swit ch.
Connecting Interface Cables 67 Connecting AUX cable Step 1: Plug the RJ-45 connector of the AUX cable into the AUX port of the switch. Step 2: Plug the DB-25 (male) or DB-9 (m ale) connector at the other end into the serial port of the analog modem.
68 C HAPTER 4: S WITCH I NSTALLATION Figure 50 LC connector Connecting fiber Step 1: Plug one end of the fiber into the SFP optical module of the Switch 8800 Family .
Cable Management 69 Figure 51 Cable bundling example I ■ The bending radius of cable body can not be less than twice of the cable diameter . The bending radius of the cabl e cannot be les s than 5 times of its diameter at th e place where it is led ou t of the connecto r; ■ Differ en t cables (power cord, signal cabl e, PGND wire , etc.
70 C HAPTER 4: S WITCH I NSTALLATION ■ Bundle the cables wherever cable bending cannot be avoided. However , the cable ties cannot be placed inside the bending area in case of the likelihood of cable core br eak due to excessive stress. See the following figure.
Verifying the Installation 71 ■ When using a hard power cord, fix it near its terminal so as to free the terminal and the cable from str ess; ■ Do not use tapping screws to fasten the connecting t.
72 C HAPTER 4: S WITCH I NSTALLATION.
5 S YSTEM D EBUGGING Setting up Configuration Environment Setting up Configuration Environment Connect a terminal (a PC in this scenario) to the switch with a Console cable.
74 C HAPTER 5: S YSTEM D EBUGGING Step 1: Start PC, and run terminal emulation pr ogram (such as T erminal of Windo ws3.1, or Hyper T erminal of W indows 95/W indows 98/Wind ows 2000/W indows NT/W indows XP/W indows ME) on PC. Step 2: Set parameters in th e Hyper T erminal of W indows98.
Powering and Booting the Switch 75 V erifying after Power -on (Recommended) T o ensure the configuration works that you will make on the switch, you are recommended to check the switch after powering it on to make sure that: ■ The cooling system is working.
76 C HAPTER 5: S YSTEM D EBUGGING.
6 S WITCH M ONITORING AND M AINTENANCE Monitoring the Switch Although the Switch 8800 Family has undergo ne a comprehensive and strict factory test before delivery , there might be some fault occurring due to improper installation. This chapter describes how to troubleshoot the Switch 8800 Family .
78 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE ■ The Input LED (green) and Output LED (gr een) stay ON, but the display power command shows that the PSU is not in position (b ut the other PSU operates normally). Such a problem is likely caused becau se of the poor contact between the PSU and the back plane due to a badly seated PSU.
Hardware Maintenance 79 Ha rd w a re Maintenance Replacing AC PSU c CAUTION: The PSU of the Switch 8800 Family is hot-swappable. When installing or replacing a PSU while power is being supplied, you must take care in the operation procedur es and safety with electricity .
80 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE Figure 56 Remove and install the AC PSU Y ou can remove AC PSU from the 8810/Switch 8814 in similar way . c CAUTION: ■ The Switch 880 0 Family uses multiple pow er systems, and yo u must turn off all of them when r emoving the AC PSU.
Hardware Maintenance 81 Removing and cleaning the air filter of PSU Step 1: Clutch the air filter by the uppe r and lower edges with your index finger and the thumb. Step 2: Pull the air filter out with an even strength. Step 3: T ake th e black air filter mesh out.
82 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE Replacing and Cleaning the Air Filter of Chassis c CAUTION: Y ou are strongly recommended to clean the air filter semimonthly to guarantee adequate ventilation. The air filter of the Switch 8800 Family is installed at the air intake vents of the chassis.
Hardware Maintenance 83 Removing a module Step 1: W ear the ESD-pre ventive wrist strap and unscrew the captive screws on the module with a flat head screwdriver . Step 2: Hold the ejector levers on th e module with both hands and pr ess them outward to separate the locking pin of the module fr om the backplane.
84 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE c CAUTION: When you replace the fan t ray of an operating switch, pull the fan tray out from the chassis only after the fans stop rotating. In this ca se, there is still the possibility that fans are still rotating.
Software Upgrade 85 ■ Loading using TF TP and through Ethernet port ■ Loading using F TP and through Ether net port 2 Local or remote loading through CLI: ■ Loading using F TP ■ Loading using .
86 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE c CAUTION: While using the Switch, keep in mind the latest Boot ROM password. MAIN MENU 1. Boot with default mode 2. Boot from Flash 3. Boot from HardDisk 4. Enter serial submenu 5. Enter ethernet submenu 6.
Software Upgrade 87 XModem completes transmission by the re ceiving pr og ram (receiver) and the sending program (sender). In XModem, the transmission begins with the sending of negotiat ion characters from the re ceiver for the purpose of check mode negotiation.
88 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE Step 5: Select a right place to stor e the downloaded fi le as needed. For example, enter 2 at the prompt displayed in the last step to download the file into the Flash of the switch, pr ess Enter , and the system will display the following information on the terminal: Please Select File .
Software Upgrade 89 sends a write request packet to the TF TP se rver , then send s the data packets to the server , and receives the ACK from the se rver . The TF TP transmission files have two forms, i.e., binary for pr ogram transmission and ASCII for text transmission.
90 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE Step 6: After you provide the requir ed information, the system accesses the Ethern et interface submenu ag ain: ETHERNET SUBMENU 1. Download file to SDRAM through ethernet interfa ce and boot 2. Download file to Flash through ethernet interfa ce 3.
Software Upgrade 91 Step 1: Connect the Switch to the PC containi ng the desir ed file via the management /upgrade Ethe rnet port. (In this case, you should know the IP addr ess of the PC. At the same time, connect the Switch to an exter nal PC (that can be the same one that contains the de sired file) via the Console port.
92 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE User(none):8500 331 Give me your password, please Password: 230 Logged in successfully [ftp] get SWITCH002.app SWITCH002.app [ftp] get Switchbtm.btm Switchbtm.btm [ftp] bye n If the switch has two fabrics, you also can copy the host and Boot ROM program files to the standby Fabric.
Password Loss 93 If you have the 720G Fabric (3C17539), down load the application software image files directly to the Fabric’ s onboard flash. T roubleshooting Software Upgrade These types of probl.
94 C HAPTER 6: S WITCH M ONITOR ING AND M AINTENANCE.
A L IGHTNING P R OTECTION OF THE S WITCH Installation of Lightning Arrester for AC Power (Socket Strip with Lightning Protection) c CAUTION: Lightning arrester will not be shipped with the switch.
96 C HAPTER A: L IGHTNING P ROTECTION OF TH E S WITCH the lightning arrester of power is running and the function of lightning protection has taken effect.
Installation of Lightning Arrester for Network Por t 97 connected to the switch should be inserted into the arrester’ s OUT end). When you do that, observe wh ether the ar rester indicators normally display .
Ein wichtiger Punkt beim Kauf des Geräts 3Com 8807 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie 3Com 8807 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 3Com 8807 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von 3Com 8807 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über 3Com 8807 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon 3Com 8807 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 3Com 8807 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit 3Com 8807. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei 3Com 8807 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.
