Manuale d’uso / di manutenzione del prodotto 2816-SFP Plus (3C16485) del fabbricante 3Com
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3Com ® Baseline Switch 2816-SFP Plus (3C16485) User Guide DUA1648-5AAA02 Link/A ctivity : G re e n = 1000M , Y ellow = 1 0/1 00 M , Flash = A ctivity , D uplex : O n = Fu ll, O ff = H alf Base line S.
Copyright © 3Com T echnologies, 2004. All rights r e served. No part of this documentation may be repr oduced in any form or by any means or us ed to make any derivative work (such as transl ation, transformation , or adapta tion) without written permissi on fr om 3Com T echnologies.
3 Contents About this Guide Naming Convention 5 Conventions 5 Feedback about this User Guide 6 Product Registration 6 Introduction Baseline Switch 2816-SFP Plus 7 Package Contents 8 How to Use t he Ba.
4 Membership VLANs 29 T runking 30 T raffic Monitoring 32 System T ools 32 Restart 32 Configuration 33 Upgrade 33 Spanning T ree 35 802.1p Prioritiza tion 36 Support 37 Using Discovery Running the Dis.
5 This guide is intended for use by th ose responsible for in stalling and setting up network equi pment; consequently , it assumes a basic working knowledge of LANs (Local Area Networks).
6 Feedback about this User Guide Y our suggestions are very importan t to us. They will help make our documentation mor e useful to you. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.
7 The 3Com ® Baseline Switch 2816-SFP Plus is a versatil e, easy-to-use co nfigurable Swit ch. It is ideal for users who want the high-speed performance of 10/100/ 1000 switching with the added functionality of Gigabi t links, but do not need sophisticated management capabili ties.
8 Package Conten ts The Switch comes with: ■ One power cord ■ Four standard height, self-adhesive rubber pads ■ One mounting kit ■ Installation CD ■ This User Guide ■ W arranty flyer The Switch is powered fr om the AC supply .
9 Front and Rear Panels The front pa nel of the Switch co ntains a series of indi cator lights (LEDs) that help describe the state of various networking and connection operati ons. The numbers in this diagram r efer to numbered sections in “Front Pan el Features” on page 9, and “Rear Pa nel Features” on page 11.
10 CAUTION: The Switch supports full dup lex auto-negotiation . If auto-negotiation is disa bled for 1000BASE-T , then the Switch uses the forced-mode default of 100 full duplex mode.
11 4 Module Active LEDs The Module Active LEDs shows the status of any SFP module s that are installe d. 5 Port Duplex LEDs The second and fourth (bo ttom) r ow of Status LEDs, which ar e color ed yellow , show the duplex status of the r elated ports.
12 CAUTION: 3Com recommends that you back up your configuration settings before yo u recover the Switch, otherwise your configuration will be lo st. Refer to “Configuration ” on page 33 for details.
13 Positioning the Switch When deciding wher e to position the Switch ensure that: ■ It is accessible and cables can be conn ected easily . ■ Cabling is away fr om sources of electrical noise. These inclu de lift shafts, micr owave ovens, and air conditio ning units.
14 Spot Checks At frequent intervals you shoul d visually check the Switch. Regular checks can give you an early warning of a possibl e failure; any pr oblems can then be attended to when ther e will be least effect on users. Chec k the following: If you experience any pr oblems operati ng the Switch, r efer to “Probl em Solving” on page 41.
15 Use of non-3Com SFPs is not recommended. If the SFP transceiver is invalid it will not be recognised by the Switch. Use the following se quence of steps to activate the SFP ports: 1 Hold the transceiver so that the fiber connecto r is toward you and the pr oduct label is visible, as shown in Figure 3 .
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17 Introd uction The Switch is supplied with two mounting brackets and four screws. These ar e used for rack mounting the unit. When mounting the unit, you should take note of the gui delines given in “Positioning th e Switch” on page 13. Rack Mounting the Units The Switch is 1U high and will fit in a standar d 19-inch rack.
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19 This chapter exp lains more a bout IP addre sses and how automatic IP configuratio n works on the Switch. For details on how to view and amend your Switch’ s IP settings, refer to “IP Settings” on page 23.
20 3 The Switch re peats step 2 until an unused IP addr ess is found..
21 This chapter de scribes all the opti ons available thr ough the Switch configuration pages, and is provi ded as a refer ence. Navigating Thr ough the Switch Configuration Pages T o get to the configuration pag es, browse to the Switch by entering the URL in the location bar of your br owser .
22 Fan Status At the bottom of a ll screens is an image of the Switch’ s fr ont panel, as shown in Figur e 6 . At the right hand side of the panel under the 3Com company name is an image depicting two fans. These repr esent the Switch’ s fans and their current status.
23 Passwor d Y ou should change the passwor d to pr event unauthorized access to the Administration System. Figure 8 Password Screen T o change the passwor d: 1 Enter the curr ent password in the Old Password field. 2 Enter the ne w passwor d in the New Password field.
24 ■ IP Address Mode — Specifies whether IP functionality is enabled via automatic IP configurati on, manual configuration (static) or dynamically using DHCP (Dynamic Host Configuration Proto col). ■ IP Address — The IP address of the Switch, and the addr ess of the default VLAN (VLAN1).
25 ■ Speed Duplex — Shows the curre nt speed and duplex mode. (Auto or fixed ch oice) In the Advanced Port Configuration page yo u can set the Switch’ s br oadcast storm control and threshold limits. Figure 11 Advanc ed Port Configuration Sc reen ■ Broadcast Storm Control — Shows if broadca st storm control is enabled or disabled.
26 VLAN Configuration Examples Desktop VLAN Confi guration Exampl e Figure 12 Deskto p VLAN Configuration Ex ample This example explains how you can set up a simple VLAN Configuration on your Switch usin g desktop connections.
27 Uplink VLAN Configu ration Example Figure 13 Uplink V LAN Configuration Examp le This example explains how you can set up a VLAN Configu ration across two Switches u sing Uplink connection s.
28 Creat e VLANs Use the Cre ate VLANs page to set up VLANs. T o pr opagate information about VLAN gr oups used on this switch to external devices, you must specify a VLAN ID for each of these gr oups. Figure 14 Create VLANs Scr een ■ VLAN ID — ID of configured VLAN (1-4094, no leadi ng zeroes).
29 Modify VLANs Use the Modify VLAN page to change the VLAN to which a port belongs, and configur e the port to communicate with all other VLANs, or a selected VLAN.
30 ■ VLAN ID — ID of the configured VLAN (1-4094, no le ading zeroes). ■ Name — Name of the VLAN (1 to 32 characters). ■ Ports — Port identifier . T runking Ports can be statically gr ouped into a trunk, also known as an aggregated li nk under the IEEE 802.
31 Use the T runking Membership page to add po rts to a group membership. Figure 19 T runking Member ship Screen ■ Port — The port number . ■ Status — The status r efers to the speed and duplex mode of the trunk members. ■ Tr u n k — ID of trunk.
32 T raf fic Monitoring Use the T raffic Monitori ng window to enable port traff ic monitoring. The Switch supports the attachment of a network analyzer to one port in order to monitor the traffic of other ports on the Switch. Figure 21 T raffic Monitoring Scr een ■ Monitor Port — This is the port that is to be monitored.
33 Any network users who are curr ently accessing the Internet will have their access interrupted while the r estart takes place, and they may need to reboot their comp uters when the restart has completed and the Switch is operati onal again.
34 Figure 24 Upgrad e Screen Once you have downloaded the software, use the Browse button to locate the file on your computer , and then click on Apply . Y ou may need to change the fil e type in the dialo g box displayed by your web browser to *. * to be able to see the file.
35 Spanni ng T ree This administrative tool supports th e configuration of the Switch to forward, or block and di scard 802.1D spanni ng tree BPDU packets. Spanning tree is a bridge-based system for providi ng fault tolerance on networks and can be used to detect and disable network loops.
36 802.1p Prio ritization The Switch has priority queuing enab led, which means all packets that are r eceived are examined to see if they have been priority encoded.
37 Figure 27 802.1p Prioriti zation scr een Support Selecting Support on the main menu disp lays the support links screen, which con tains a list of Internet links that provide information and support concerning the Switch.
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39 Running the Discovery Application 3Com provides a user -friendly Disc overy application for detecting the Switch on the network. If your computers are config ured with static addr esses (also known.
40 2 When the Wel com e screen is di splayed click on Next and wait until the application discovers the Switch es connected to your LAN. Figure 30 Dis covered Switch 3 Figur e 30 shows an example Discove red Devices scr een. Highlight the Secure Swi tch by clicking on it, and cli ck Next .
41 Refer to the information abou t LEDs given earlier in this guide to see if the problem can be identified and r ectified. Here ar e some common proble ms that can occur: A link is connecte d but the Li nk/Activity Status LED for the port does not light There is a problem with this connecti on.
42 The Firmware image has become corrupted If the firmware image becomes co rru pted, you need to upgrade the firmware. The Switch goes into Fai l Safe mode, and the screen shown i n Figure 32 displays.
43 at least 5 seconds, or when the LED flashes, r elease the r ecovery button. The Switch will now enter fail safe mode , whereby the Switch’ s IP addr ess, user name and passwor d will be reset to the factory defaults. 4 Click on the REST AR T THE SWITCH button.
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45 Please rea d the following sa fety informat ion carefully befor e installing the Ba seline Switch 2816-SFP Pl us. WAR NI NG : Installation and removal of the unit must be carried out by qualified personnel only .
46 V euille z lire à fond l'informa t ion de la sécu rité suivante avant d'installer le Basel ine Switch 2816-SFP Plus. A VERTIS SEMENT : L ’installati on et la dépose de ce groupe doivent être confiés à un person nel qualifié.
47 Bitte unbedingt vor dem Einb auen des Baseline Switch 2816-SFP Plus die fol genden Sicherheitsanwe isungen durc hlesen. WARNUNG: Die Installa tion und der Ausbau des Gerä ts darf nur durch Fachpersonal erfolgen .
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49 Related Standards The Baseline Switch 2816-SFP Pl us has been designed to the following standards: Environmental Physical Electrical Functional ISO 8802-3, IEEE 80 2.3 (Ether net), IEEE 802.3u ( Fast Ether net), IEEE 80 2.3ab and IEEE 802. 3z (Gigabit Ethernet), IEEE 80 2.
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51 Where T o Go For Help Contact your authorised 3Com re se ller or 3Com for additional produ ct and support information. Y ou will find support tools posted on the 3Com web site at www.
52 T elephone T echnical Support and Repair T o obtain telephone suppo rt as part of your warranty and other service benefits, you must first r egister your product at http://eSupport.
53 Europe, Middle East, and Africa T elephone T echnical Support a nd Repair From anywher e in these regions, call: +44 (0)1442 435529 From the following countries, you may use the numbers shown: Aust.
54 Y ou can also obtain support in this region using the following: Spanish speakers, enter the URL: http://lat.3com.com/lat/support/form.html Portuguese speak ers, enter the URL: http://lat.3com.com/br/support/form.html English speakers in Latin Am erica should send e-mail to: lat_support_anc@3com.
55 10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE- TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. 1000BASE-LX IEEE 802.3z spec ification for Gigabit Ethernet over 9/125 micron core single-mod e fiber cable.
56 Category 5e Cables One of five grades of T wisted Pair (TP) cabling defined by the EIA/TIA-568 sta ndard. Category 5e can be used i n Ethernet (10BASE-T), Fast Ethernet ( 100BASE-TX) an d Gigabit Ethernet (1000BASE-T) networks, and ca n transmit data at speeds of up to 1000 Mbps.
57 IEEE 802.1Q VLAN T agging - Defines Ethernet frame tags which carry VLAN information. It allo ws switches to assign endstations to di ffer ent virtual LANs, and defines a standar d way for VLANs to communicate acro ss switched networks. IEEE 802.1p An IEEE standar d for pr oviding quality of service (QoS) in Ethernet networks.
58 MAC Address Media Access Control Addr ess. Also called the har dware, physical or Ethernet address. A layer 2 addr ess associated with a particular network device. Most dev ices that connect to a LAN have a MAC addr ess assigned to them as they are used to identify other devices in a network.
59 TCP/IP T ransmission Contr ol Protocol/Inte rnet Protocol. This is the name for two of the most well-known pr otocols developed for the interconnecti on of networks . Originally a UNIX standar d, TCP/IP is now supported on almost all platforms, and is the protocol of the Internet.
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61 Numbers 1000BASE-LX 55 1000BASE-SX 55 1000BASE-T 55 100BASE-TX 55 10BASE-T 55 802.1p Prioritization 36 A admin passwor d changing 23 automatic IP configuration 19 B bandwidth 55 Baseline Switch 281.
62 G getting help 21 Gigabit Ethernet 56 H half duplex 56 help menu 21 I IEEE 56 IETF 57 IP addr ess 19 automatic IP configuration 19 DHCP addressing 19 Discovery program 19 static IP configuration 19.
63 S saving Switch configuration 32 server defined 58 setting up computers 17 subnet mask 58 support 37 Support for your product 51 Switch changing the pass wor d 23 configuration 21 positioning 13 re.
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65 FCC Statement This equipment has b een tested and found to comply with the limits for a Clas s A digital device, pursuan t to Part 15 of the FCC Rul es. These limits are designed to provide reasonable protection against harmful interfer ence in a commeric al environment.
66 Part Number: DUA1648-5AAA02 Published: September 2004.
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 2816-SFP Plus (3C16485) 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 2816-SFP Plus (3C16485) - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com 2816-SFP Plus (3C16485) imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com 2816-SFP Plus (3C16485) ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com 2816-SFP Plus (3C16485), 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 2816-SFP Plus (3C16485).
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 2816-SFP Plus (3C16485). Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com 2816-SFP Plus (3C16485) 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.
