Manuale d’uso / di manutenzione del prodotto Baseline 2226-PWR Plus del fabbricante 3Com
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http://www.3com.com/ Baseline Switch 2226-PWR Plus (3C16490) User Guide Firmware Version 1.1.0.7 Part No. DUA1649-0AAA02 Published January 2005.
3Com Corporation • 350 Campus Dri ve • Marlborough • M A USA 01752-3064 Copyright © 2005, 3Com Corporation. Al l rights reserved. No part of this documentation may be reproduced in an y form or.
C ONTENTS A BOUT T HIS G UIDE Conventions 5 Related Documentation 6 Documentation Comments 6 1 I NTRODUCI NG THE B ASELINE S WITCH Overview of the Baseline Switch 2226-PWR Plus 7 Features and Capabili.
Default Port Settings 33 Changing a Port’s Settings 34 Configuring VLANs 35 Creating a VLAN 36 Sample VLAN Configurations 37 Removing a VLAN 38 Configuring Link Aggregation 38 Trunk Membership 39 Ad.
A BOUT T HIS G UIDE This guide is intended for use by those responsible for installing and setting up network equipment. Conse - quently, it assumes a basic working know ledge of LANs (local area networks).
6 A BOUT T HIS G UIDE Related Documentation In addition to this guid e, each 3Com Baseline Switch 2226-PWR Plus document ation set includes the fol - lowing: ■ Online Help – Accessible from the We b interface, provides information that helps you perform tasks using the Web interface.
1 I NTRODUCING THE B ASELINE S WITCH This chapter provides an ov erview of the features and capabilities of the 3Com ® Baseline Switch 2226-PWR Plus. It also identifi es the contents of th e Switch pack - age and helps you get to kn ow the physical features of the device.
8 C HAPTER 1: I NTRODUCING THE B ASELINE S WITCH Power over Ethernet (PoE) The Switch supports Power ov er Ethernet (PoE) on all 24 10/100 ports. If you plu g in a compatible (IEEE 802.3af compliant) device, the Switch will automati - cally detect and supply power to it.
Physical Features 9 The 802.1D standard specifies eight distinct levels of priority (0 to 7), each of wh ich relates to a particular type of traffic. The p riority levels and their traf fic types are shown in Table 3 .
10 C HAPTER 1: I NTRODUCING THE B ASELINE S WITCH Either shielded or unshie lded data cables with shielded or unshielded jacks can be conn ected to these data sockets. AVERTISSEM ENT: Points d’accès RJ-45. Ceux-ci so nt protégés par des prises de données.
Physical Features 11 (PD) Port powering o n the front panel to indicate PoE operation. CAUTION: The Switch supports full-duplex autone - gotiation. If the connected device does not sup port autonegotia tion, the Sw itch will operate in half-duplex mode ( even if the attached device is oper - ating in full-duplex mode).
12 C HAPTER 1: I NTRODUCING THE B ASELINE S WITCH Ports 25 and 26 are no t configured to provid e Power over Ethe rnet. The two SFP ports support f iber Gigabit Ethernet short-wave (SX) and long-wave (LX) SFP transceivers in any combination.
Package Contents 13 tion, refer t o “ Resetting to Factory Defaults ” on page 51 . Package Contents The 3Com Baseline Sw itch 2226-PWR Plus package includes the following items: ■ One 3Com Basel.
14 C HAPTER 1: I NTRODUCING THE B ASELINE S WITCH.
2 I NSTALLING THE S WITCH This chapter contains inform ation that you need to install and set up the Switch . It covers the following topics: ■ Positioning the Switch ■ Rack-Mount ing or Free-S ta.
16 C HAPTER 2: I NSTALLING THE S WITCH ■ It is accessible and cables can be connect ed easily. ■ Cabling is away from sour ces of electrical noise.
Supplying Power to the Switch 17 Figure 2 Inserti ng the Screws 4 Repeat the two previous st eps for the other si de of the unit. 5 Insert the un it into the 19- inch rack and secure with suitable screws (not provided). Ensur e that the venti - lation holes are not obstr ucted.
18 C HAPTER 2: I NSTALLING THE S WITCH When the Switch is powere d on, th e Power LED lights up. If the Power LED does not light up, refe r to “ (6) Power LED ” on page 12 for mor e informatio n. Checking for Correct Operation After you power on the Switch, it aut omatically per - forms a pow er-on self-test (PO ST).
Using SFP Transceivers 19 Figure 3 Connecting Devices to the Switch To connect a device to the Switch: 1 Connect one end of the cable to an RJ-4 5 port on the Switch. 2 Connect the other end to the ap propriate RJ-45 port on the connect ing device. For 1000BASE-T operation , 3Com recommends using Category 5e or 6 cables.
20 C HAPTER 2: I NSTALLING THE S WITCH in Figure 4 . Ensure the w ire release lever is closed (in the upright position). Figure 4 Inserti ng the SFP Transceiver 2 Gently slide the transceiver into the SFP slot until it clicks into place. CAUTION: SFP transceivers are keyed and can be properly inserted only one wa y.
Performing Spot Checks 21 Table 5 Items to Check If you experience any problems operating the Switch, refer to “ Troubleshooting ” starting on page 51 .
22 C HAPTER 2: I NSTALLING THE S WITCH.
3 C ONNECTING TO THE W EB I NTERFACE The Switch has a built-in We b int erface that yo u can use to set the admin passwor d, change the IP address that is assigned to the Switch, and config ure its advanced settings.
24 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE Figure 5 Welcome Screen of Discovery 2 If the computer has multiple network adapters, se lect the adapter that connects the computer to the Switch, an d then click Next . If the computer has only one adapter, click Next .
Navigating the Web Interface 25 The logon screen also displa ys the IP address that the Switch is currently using. Figure 7 Logon Sc reen To log on to the Web inter face: 1 In Username , type admin .
26 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE Buttons Depending on the screen that is currently displayed , the following buttons may appear: ■ Apply – Click to save and apply any changes that.
Accessing the Interface Without Using Discovery 27 DHCP Assigned IP Address If you set the IP ad dress mode to DHCP, check the DHCP server for the IP addre ss that is assigned to the Switch, and th en use that IP ad dress to access th e Web interface.
28 C HAPTER 3: C ONNECTING TO THE W EB I NTERFACE.
4 C ONFIGURING THE S WITCH This chapter provides inform ation on how to config - ure the Switch’s advanced features. Topics include: ■ Changing the Admin Password ■ Modifying the IP Address Sett.
30 C HAPTER 4: C ONFIGURING THE S WITCH Table 7 Items on the Status Screen If you request for technica l assistance from 3Com Support, you may be asked to print out the informa - tion on this screen.
Modifying the IP Address Settings 31 have not previously set a password, leave this field blank. 3 In New Password , ty pe the password th at you want to set. 4 In Confirm Password , retype t he password you typed in step 3 to confirm. The password is case-sensitive.
32 C HAPTER 4: C ONFIGURING THE S WITCH 3Com recommends using au tomatic IP configuration only for the initial setup. On ce you gain access to the console, you sho uld assign an IP addres s to the Switch (either by using DHCP or as signing a static IP address) to ensure successfu l communication between the Switch and other network devices.
Configuring Port Settings 33 Configuring Port Settings Using the Web interface, you can configure the speed/duplex and flow contr ol settings of each port. You can also shut down or disable ports from the Web interface. Viewing Port Settings To view the current port settings, click Port Configu - ration on the menu.
34 C HAPTER 4: C ONFIGURING THE S WITCH Changing a Port’s Settings If a port is a member of an aggreg ated link (or trunk) , you will not be able to conf igure its individual port settings. All member ports of an aggregated link will have the same settings, and you can configure these by clicking the AL link on the Port Configuration screen.
Configuring VLANs 35 3 Click Apply to save your settings. To configure another po rt, click Po rt Configuration on the menu again, and then click the port number th at you want to configure. Speed/Duplex for 1000 Mbps Connections You cannot preset th e speed to 1000Mbps.
36 C HAPTER 4: C ONFIGURING THE S WITCH Communication between differ ent VLANs can only take place if they are all conn ected to a router or layer 3 switch. Creating a VLAN Use the VLANs page to create VLA Ns on the Switch. To propagate informat ion about VLAN groups used on this Switch to external devices, you must specify a VLAN ID for each VLAN.
Configuring VLANs 37 For examples on setting up VLANs, refer t o “ Sample VLAN Configurations ” . Sample VLAN Configurations To illustrate how you can segment ne twork devices that are connected to the Switch, the following sample configurations are provided.
38 C HAPTER 4: C ONFIGURING THE S WITCH Figure 17 Uplink VLAN Configuration To set up the configuration shown in Figure 17 , do the following: 1 Create VLAN2 on both Switch 1 an d Switch 2, and assign the same name to it. You need no t create VLAN1 since it exists by default.
Configuring Link Aggregation 39 The Switch does not supp ort th e Link Aggregation Control Protocol (LACP), wh ich is specified in IEEE 802.3ad. Trunk Membership The Switch has four pre-defi ned trunks, each of which can suppor t up to eight po rts. Table 11 lists the possible membership gr oups for each tr unk.
40 C HAPTER 4: C ONFIGURING THE S WITCH CAUTION: If you try to add a port to a trunk an d the speed setting of the port to be added does not match that of th e trunk, an er ro r message appears and port will not be adde d to the trunk.
Configuring PoE 41 Figure 20 PoE Configuration Summary Screen You can configure two basic PoE settings in the Switch Configuration section: ■ Power ■ Power Exceed Shutdown Method Table 12 describes the available options for these se t - tings.
42 C HAPTER 4: C ONFIGURING THE S WITCH To configure the PoE settings of a port: 1 On the PoE Configuration screen, click the port number that you want to configure.
Viewing Statistics 43 3 Click Apply to save the PoE settings for the port. To configure the PoE settin gs of anot her port, click the port numb er from the PoE Configuration screen. Planning Power Budgets As you connect more PoE de vices to the Switch, you may need to calculat e your p ower budget.
44 C HAPTER 4: C ONFIGURING THE S WITCH Figure 22 Statistics Screen Figures that appear onscreen indicate the number of packets transmitted (Tx) and received (Rx) . ■ To reset all packe t counts to zero , click Clear Counters . ■ To view detailed statistics for each port, click the port number.
Setting the Traffic Priority 45 toring, the Switch takes a ll the traffic going in and out of the monitor po rt and copie s it to the ana lysis port. CAUTION: The analysis port (Mirro r From) should have a high er bandwi dth than the monitor p ort (Mir - ror From).
46 C HAPTER 4: C ONFIGURING THE S WITCH IP Phone Prioritiza tion Use the IP Phone Prioritization sect ion to enable or disable traffic prioritization f or NBX or other IP phones.
5 U PGRADING THE F IRMWARE 3Com may release up grade files for the f irmware that is installed on the Switch. These firmware upgrades normally contain f eature en hancements and fixes f or known issues in previous releases. This chapter describes how to download firmware updates and use the 3Com TFTP Server to upgrade the firmware on the Swit ch.
48 C HAPTER 5: U PGRADING THE F IRMWARE 4 Read the license agreem ent, and then click Yes to agree. Th e Choose Destin ation Location screen appears. 5 To install the 3Com TFTP Serv er to the default folder, click Next . To specify another location, click Browse , and then select a new location.
Performing Firmware Upgrade 49 4 If a firmware update is available, download the update files to the com puter on which you installed the 3Com TFTP Server. 5 Copy the upgr ade files to the Upload/Download Directory you specified in step 3 of “ Setting Up the 3Com TF TP Server ” .
50 C HAPTER 5: U PGRADING THE F IRMWARE Figure 28 Status Column Indicates When Upgrade is Complete To verify that the upgrade was successful, access the Web interface, and then go to the System Upgrade screen. The Curren t Firmware Ve rsion should show the version of the firmware t hat you have just installed.
6 T ROUBLESHOOTING This chapter lists some issues th at you may encounte r while installing, using, and managing the Switch, with suggested cou rses of corrective action to take. If you encounter an issue th at is not lis ted here and you cannot solve it, chec k the 3Com Knowledgebase at http://knowledgebase.
52 C HAPTER 6: T ROUBLESHOOTING Forgotten Password If you forget the passwor d to the Web interfac e after you set it, you will need to reset the Switch to regain access.
Solving Power Issues 53 A PoE device is plugged in, but the PoE LED for the port is off. If a device is not su pplied with power after you have connected it to the Switch 2226-PWR Plus, check the following: ■ The power bud get for th e Switch (180 w atts) has not been excee ded.
54 C HAPTER 6: T ROUBLESHOOTING By default, the Switch will allow a device to receive power as long as the PoE power supply has 18 wat ts spare in its power budget .
A O BTAINING S UPPORT FOR Y OUR P RODUCT Register Your Product Warranty and other service benefits start f rom the date of purc hase, so it is impor tant to register your product quickly to ensu re you get full use of the war - ranty and ot her service benefits availab le to you.
56 A PPENDIX A: O BTAINING S UPPORT FOR Y OUR P RODUCT found at http://eSupport.3com.c om/ , or under the Product Suppor t heading at http://www.3com.com/ Software Upgrades are the software releases that follow the soft ware version included with your origi - nal product.
Contact Us 57 . Country Telephone Number Asia, Pacific Rim Tele phone Technical Supp ort and Repair Australia Hong Kong India Indonesia Japan Malaysia New Zealand Pakistan Philippines P.
58 A PPENDIX A: O BTAINING S UPPORT FOR Y OUR P RODUCT Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republi c Guate.
B S AFETY I NFORMATION Important Safety Information Please read the following safety in formation carefu lly before installing the 3Com Baseline Switch 2226-PWR Plus. WARNING: Installation and re moval of the unit must be carried out by qualified personnel on ly.
60 A PPENDIX B: S AFETY I NFORMATION WARNING: Fib er optic po rts – optical safe ty Never look at the transmit laser while it is powered on. Never look directly at the fiber ports and f iber cable ends when they are powered on.
Wichtige Sicherheitshinweise Informatio nen 61 tion Neutre et a vec raccordement d irect à la ter re (masse). AVERTISSEM ENT: Cordon électrique Il doit être agréé dans le pays d’utilisation. AVERTISSEM ENT : Ports pour fibres optiqu es – sécu - rité sur le plan optique Ne regardez jamais le laser tant qu'il est sous tension.
62 A PPENDIX B: S AFETY I NFORMATION WARNUNG: Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die Stromversor - gung des Geräts kann nur durch Herausziehen des Gerätenetzkabe ls aus der Netzsteckdose unterbro - chen werden.
Información de Seguridad Importante 63 punto de conexión secundario etiquetado como neutro cone ctado dire ctamente a tierra. †Impédance à la terre. ADVERTENCIA: Conjunto de cables eléctricos Debe estar homologado para el país donde se utilice.
64 A PPENDIX B: S AFETY I NFORMATION ADVERTENCIA: El uso de controles, ajustes de ren - dimiento o procedimientos distintos a los especifica - dos en este documento puede produ cir emisiones de láser peligrosas.
Importanti Informazioni di Sicurezza 65 AVVERTENZA: Le porte RJ-45 son o prese dati RJ- 45 schermate. Non è pertanto po ssibile utilizzarle come normali prese telefoniche né per collegare l'unità a un PBX (Private Branch Exchan ge, centralino telefonico privato) o a una rete telefonica pubblica.
66 A PPENDIX B: S AFETY I NFORMATION.
C T ECHNICAL I NFORMATION Related Standards The 3Com Baseline Switch 2226-PWR Plus has been designed to the followi ng standards: Environmental Physical Electrical The Switch can also prov ide p ower to any PoE- com - pliant device that is connected to any of its 24 Ether - net ports (b ased on the IE EE 802.
68 A PPENDIX C: T ECHNICAL I NFORMATION.
G LOSSARY 10BASE- T The IEEE specification for 10 Mbps Ethernet over Cat - egory 3, 4 or 5 twisted pair cable. 100BASE- TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 tw isted-pair cable. 1000BASE-LX IEEE 802.3z specification fo r Gigabit Ethernet over 9/125 micron core single-mode fiber cable.
70 G LOSSARY category 5e cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standa rd. Category 5e can be used in Ethernet (10BASE-T), Fast Etherne t (100BASE-TX) and Giga bit Ethernet (100 0BASE-T) networks, and can tr ansmit data at speeds of up to 1000 Mbps.
G LOSSARY 71 standard way fo r VLANs to commu nicate across switched networks. IEEE 802.1 p An IEEE standard for provid ing quality of service (QoS) in Ethe rnet netwo rks. Th e st andard uses packet tags that define up to eight traf fic classes and allows switches to tr ansmit packets based on the t agged pri - ority value.
72 G LOSSARY network A network is a collection of computers and other computer equipmen t that are connect ed for the pur - pose of exchanging information or sharing resources. Networks vary in size, some are within a single room, others span cont inents.
G LOSSARY 73 TCP relates to the content of the data travelling through a network — e nsuring that the infor mation sent arriv es in one piec e wh en it reaches its destina - tion. IP relates to the address o f the end station t o which data is being sent, as well as the address of th e destination network.
74 G LOSSARY.
I NDEX Numbers 1000BASE-LX 69 1000BASE-SX 69 1000BASE-T 69 100BASE-TX 69 10BASE-T 69 3Com TFTP Server setting up 48 3CSom TFTP Server installing 47 A auto IP confi guration 31 default IP address 31 de.
76 I NDEX mounting kit contents 15 using 16 N network analyzer 44 network cables category 3 69 category 5 69 category 5e 70 category 6 70 network defined 72 P package contents 13 panels front 9 rear 1.
R EGULATORY N OTICES FCC S TATEMENT This equipment has been tested and found to comply with the limits for a Class A digital device, pursu ant to part 1 5 of the FCC rul es. These limits are d esigned to p rovide reasonable protection against harmful interfere nce when the equipment is operated in a commercial environment.
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 3Com Baseline 2226-PWR Plus 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 3Com Baseline 2226-PWR Plus - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com Baseline 2226-PWR Plus imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com Baseline 2226-PWR Plus ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com Baseline 2226-PWR Plus, 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 3Com Baseline 2226-PWR Plus.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il 3Com Baseline 2226-PWR Plus. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com Baseline 2226-PWR Plus 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.
