Manuale d’uso / di manutenzione del prodotto 2900 del fabbricante 3Com
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3Com Baseline Switch 2900 Family Getting Started Guide Manual Version: 5W100 www.3com.com 3Com Corporation 350 Campus Drive, Marlborou gh, MA, USA 01752 3064.
Copyright © 2009, 3Com Corporatio n. All rights reserved. No part of this documentation may be reprodu ced in any form or by any means or used to make any de riva tive work (such as translation, transformation, or adaptation) without written permiss ion from 3Com Corporation.
About This Manual Organization 3Com Baseline Switch 2900 Fam ily Ge tting Started Guide is organized as follows: Chapter Contents 1 Product Overview Briefly introduces the appearan ce, syst em description, as well as the features and applications of the 3Com Baseline Switch 2900 Family.
Convention Description Means a complementary descri ption. Means techniques helpful f or you to make configuration with ease. Related Documentation In addition to this manual, each 3Com Baseli ne Swit.
i Table of Contents 1 Product Ov erview ················································································.
ii Laser Sa fety ···························································································.
1-1 1 Product Overview Introduction The 3Com Baseline Switch 2900 Family are Layer 2 Gigabit Ethernet switches develope d by 3Com. They are intelligent manageable switches designe d for network environment s where high pe rformance, high-density port distribution, and ea sy installation a re required.
1-2 Description Item 3Com Baseline Sw it ch 2920-SFP Plus 3Com Baseline Sw it ch 2928-SFP Plus 3Com Baseline Sw it ch 2952-SFP Plus 3Com Baseline Sw it ch 2928-PWR Plus 3Com Baseline Sw it ch 2928-HPW.
1-3 3Com Baseline Switch 2920-SFP Plus Front Panel Figure 1-1 3Com Baseline Switch 2920-SFP Plus front panel (1) 10/100/1000Base-T auto-sen sing Et hernet port (2) Po rt status LED (3) Power LED (Po w.
1-4 3Com Baseline Switch 2928-SFP Plus Front Panel Figure 1-3 3Com Baseline Switch 2928-SFP Plus front panel (1) 10/100/1000Base-T auto-sen sing Et hernet port (2) Port status LED (3) Power LED (Po we.
1-5 3Com Baseline Switch 2952-SFP Plus Front Panel Figure 1-5 3Com Baseline Switch 2952-SFP Plus front panel (1) 10/100/1000Base-T auto-sen sing Ethernet port (2) 10/100/1000Base-T auto-sen sing Ether.
1-6 3Com Baseline Switch 2928-PWR Plus Front Panel Figure 1-7 3Com Baseline Switch 2928-P WR Plus front panel (1) 10/100/1000Base-T auto-sen sing Ethernet port (2) Port status LED mode switching butto.
1-7 3Com Baseline Switch 2928-HPWR Plus Front Panel Figure 1-9 3Com Baseline Switch 2928-HPWR Plus fro nt panel (1) 10/100/1000Base-T auto-sen sing Ethernet port (2) Port status LED mode switching but.
1-8 Only the RPS recommended by 3Com can b e used for the 3Com Baseline Switch 29 28-HPWR Plus. The –48 VDC power supply in the equipment room ca nnot be used dire ctly. Otherwise, the device may be damaged. Cooling System The 3Com Baseline Swit ch 2928-HPWR Plus is equipped with six fans for heat dissip ation.
1-9 1000Base-X SFP Interface Each 3Com Baseline Switch 2900 Family provides four 1000Base-X SFP interfaces on its front p anel. Y ou can select the GE SFP transceivers described i n T able 1-4 .
1-10 LEDs Table 1-5 LEDs LED Device support Description Power LED All series See “ Power LED ” on page 1-1 0 . RPS status LED 3Com Baseline Switch 2928-HPWR Plus See “ RPS Status LED ” on page 1-10 . Port mode LED 3Com Baseline Switch 2928-PWR Plus and 3Com Baseline Switch 2928 -HPWR Plus See “ Port Mode LED ” on page 1-11 .
1-11 Port Mode LED The port mode LED on the 3Com Baseli ne Switch 2928-PWR Plus/3Com Baseli ne Switch 2928-HPWR Plus can display the workin g status of a port for yo u to obt ain more device information. Y ou can use the port mode switching button to change the st atus of the port mode LED.
1-12 Switch model Port mode LED Ethernet port status LED Meaning Solid green The port operates at a rate of 1000 Mbps Fast blinking green Data is transmitted or received at a rate of 1000 Mbps Solid y.
1-13 1000Base-X SFP Interface Status LED For 3Com Baseline Switch 292 8-PWR Plus and 3Com Baseline Switch 2928-HPWR Plus, the port mode switching button do es not take effect for the 1000Base-X SFP interface L EDs.
2-1 2 Installation Preparations Safety Precautions T o avoid any device impair ment and bodily injury caused by improper u se, observe these rules: z Before cleaning the switch, plug out the power cord of the switch first. Do not cl ean the switch with wet cloth or liquid.
2-2 Especially when the indoo r relative humidity is low , electrostatic adsorption i s more likely to happen. This can not only shorten the service life of your device but also cause communications failu res. The following table list s the dust concentration limit.
2-3 When an SFP module on the 3Com Baseline Switch 2900 Family is operating, do n ot stare into the optical port because the laser light emitted from the optical fiber may hurt your eyes.
3-1 3 Installing a Switch On a mounting screw of the chas sis of the 3Com se ries switches, there is a seal labeled. You need to keep it intact before asking the agent to maintain the swit ch. You need to get the permission o f the local agent before you can open the chas sis.
3-2 Figure 3-2 Two-holed mounting bracket (1) Screw hole use d to fix the mounting bracket to the rack (with an M6 screw) (2) Screw hole use d to fix the switch to the mounting bracket Figure 3-3 Four.
3-3 The mounting bracket s can be attach ed to a switch for center , front, or rear mounting. Y ou can choose a proper position acco rding to the actual requireme nts.
3-4 Figure 3-6 Install a four-holed mounting bracket on the chassi s (front mounting) Figure 3-7 Install a four-holed mounting bracket on the chassi s (center mounting) Figure 3-8 Install a four-holed.
3-5 If support trays are provided on the ra ck, you can mount the switch to the rack with mountin g brackets and trays. Put the switch on the supp ort tray and slide the switch to an appropriate location.
3-6 Mounting the Switch on a Workbench In many cases, st andard 19-inch cabinet s are not available. Therefore, switche s are often placed on clean workbenches. T o place the switch on a workbe nch, follow these step s: Step1 Place the switch with bottom up carefully , and then clean the round holes on the chassis bottom with dry cloth.
3-7 Figure 3-10 Connect the PGND cable to the groundi ng hole of switch (1) Rear panel of the switch (2) Grounding sign (3) Grounding hole (4) OT terminal (5) PGND cable (6) Grounding scre w T o attac.
3-8 z The PGND cables supplied with the 3Com Baselin e Switch 2900 Family do not provide OT terminals at the ends conn ecting the grounding st ri p. You need to prepare p roper OT terminals by yourself. z The fire main and lightning rod of a building are not suitable for groundi ng the switch.
3-9 Figure 3-13 Ground through an AC po wer PE wire (1) Three-wire AC power i nput cable (2) Switch rear panel Use the PGND cable provided with the switch to connect the grou nding strip in the equi pment room. Otherwise, the grounding effect may not be en sured, which easily causes damage to the switch.
3-10 Make sure that the PGND cabl e has been properl y connected before p owering on the switch. Connecting an RPS DC Power Cord The 3Com Baseline Switch 2928-HPWR Plus also sup port s RPS DC power input with the input voltage ranging from –52 V to –55 V .
3-11 z The selected power module match es that required by the switch. z The power cables are p roperly connected. z All the interface cables are cabled indoors. If there is any cable wired outdoor s, verify that socket strip with lightning protection and lig htning ar resters for network ports hav e been properly connec ted.
4-1 4 Initial Power-On Setting Up the Configuration Environment Set up the configuration environment as follows: Connect a terminal (a PC in this example) to the console po rt on the switch with a console cable.
4-2 RJ-45 Signal Direction DB-9 3 TXD ← 3 4 CD → 1 5 GND — 5 6 RXD → 2 7 DSR → 6 8 CTS → 8 Connection Procedure When you want to use the terminal to configure th e switch, follow the se st.
4-3 z Data bits: 8 z Parity: None z Stop bits: 1 z Flow control: None z Emulation: VT100 The specific procedure is as follo ws: Step1 Select Star t > Programs > Accessories > Communications > Hy per T erminal to enter the HyperT erminal wind ow .
4-4 Step3 Click OK after sel ecting a serial port. The following dial og box appears. Set Bit s per second to 38400 , Dat a bits to 8 , Parity to None , Stop bit s to 1 , and Flow control to None .
4-5 Step5 Click Properties in the HyperT ermin al window to enter the Switch Properties dialog box. Click the Settings tab, set the emulation to VT100 , and then click OK .
4-6 CPU Clock Speed : 333MHz Memory Type : DDR2 SDRAM Memory Size : 128MB Flash Size : 128MB CPLD Version : 001 PCB Version : Ver.A Mac Address : 000ef2002900 Press Ctrl-B to enter Extended Boot menu...1 The last line asks whether you want to enter the Boot ROM menu.
4-7 Item Description 6. Enter BootRom upgrade menu Enter the Boot ROM update menu 7. Skip current system configuration Skip the current configuration f ile (this configuration is valid once) 8. Set BootRom password recovery Restore the Boot ROM password 9.
4-8 Are you sure you want to change it to full startup mode? Yes or No (Y/N): Enter Y . The system di splays the following information: Setting...Done! BOOT MENU 1. Download application file to flash 2. Select application file to boot 3. Display all files in flash 4.
4-9 CPLD selftest................................OK! Switch chip selftest.........................OK! PHY selftest.................................OK! Please check leds......................FINISHED! User interface aux0 is available. Press ENTER to get started.
5-1 5 Loading Software Introduction The 3Com Baseline Swit ch 2900 Family does not provide independent Boot ROM pro gram but integrates it with the application program in hos t softwa re package with the extensi on name of .
5-2 Introduction to the Boot ROM Menu Starting...... ************************************************************************ * * * 3COM 2928-SFP Plus BOOTROM, Version 102 * * * **********************.
5-3 5. Modify BootRom password 6. Enter BootRom upgrade menu 7. Skip current system configuration 8. Set BootRom password recovery 9. Set switch startup mode 0.
5-4 Task Remarks Set the download rate of the console port on the switch Required Log in to the switch through the HyperT erminal and then set the download rate of the co nsole port on the switch.
5-5 After the system displays “Ent er your choice(0-3):”, enter 1 to enter the protocol param eter setting menu. All the Boot ROM files to be loaded are complete Boot ROM files. 1. Set TFTP protocol parameter 2. Set FTP protocol parameter 3. Set XMODEM protocol parameter 0.
5-6 Now that the console communi cation baud rate of the switch has been change d to 1 15200 bps while that of the terminal is still 38400 bp s, the two sides cannot communicat e with ea ch other . According to the prompt, you need to change the bau d rate of the terminal to 1 15200 bps.
5-7 Figure 5-2 Properties dialog box Figure 5-3 Modify the baud rate Step3 Select Call > Call to reestablish the connection..
5-8 Figure 5-4 Reestablish the conne ction The new settings can take effect only after you re establish the connection. 6) Establish a connection between the termi nal and the switch using the changed rate Press Enter to reestablish the connection betwe en the terminal and the switch and download the application file at 1 15200 bps.
5-9 Figure 5-6 File transmission dialog b ox Step2 Click Send . The following d ialog box appears: Figure 5-7 Send the application file using XMODEM 8) Updating the Boot ROM file on the switch After the Boot ROM file is download ed, the te rminal displays the following information: Loading .
5-10 Set the baud rate to 38400 bps (refer to “ Change the rate of the serial port on the terminal ” on page 5-6 for detailed o peration). If you select 38400 bps a s the download rate, skip this step, that i s, you do not need to modify the baud rate of the HyperTerminal.
5-11 Loading Files Using TFTP Through Ethernet Port Introductin to TFTP T rivial File Tr ansfer Protocol (TFTP) is a TCP/IP protoc ol used for file transfer between cli ent and server . It provides a simple and low-overhead fi le transfer se rvice. TFTP provides u nreliable data tran sfer over UDP .
5-12 The PC and the TFTP server can be the same device. 2) Run the TFTP Server program on the sever Run TFTP Server on the server connected with the sw it ch’s Ethernet port, and specify the path of the application file to be downloaded. 3) Run the terminal emulation program on the PC c onnected with the swit ch’s console port.
5-13 z Enter the file name and IP addresses based o n the actual condition. z If the switch and the server are on the same ne twork segment, you can specify any unused IP address of the network for th.
5-14 The procedure of loading a n application file is similar to that of loa ding a Boot ROM file. The dif ference lies in that the system displays t he prompt of loading the application f ile rather th an the Boot ROM file.
5-15 1) Set up the configuration environment Connect an Ethernet port of the switch to the server (whose IP address is available) that provides the file (usually the .bin file) to be downloaded, and con nect the console port of the switch to a PC, as shown in Figure 5-9 .
5-16 Table 5-5 Description of the FTP parameters Item Description Load File Name : Name of the file to be downloaded Server IP Address : IP address of the PC Local IP Address : IP address of the switc.
5-17 Loading an application file T o load an application file of the switch, enter 1 in the Boot ROM menu. The system displays the following information: 1. Set TFTP protocol parameter 2. Set FTP protocol parameter 3. Set XMODEM protocol parameter 0. Return to boot menu Enter your choice(0-3):3 Y ou can enter 2 to load the application file.
6-1 6 Maintenance and Troubleshooting File Loading Failure If file loading fails, the system ru ns steadily using the original system files. In thi s case, check whether the physical port s are properly connected. z If not, reconnect them correctly and restart the loading pro cedure.
6-2 Power Supply Failure The 3Com Baseline S witch 2928-HPWR Plus adopt s AC power input, RPS power inp ut, or both RPS and AC power input s. Other 3Com Baseline Switch 2900 Family adopt AC power input only . Y ou can determine whether the power system of a switch functi ons no rmally by viewing the power LED or RPS power LED on the front p anel.
6-3 z The RPS power input is normal. If the cause cannot be located in the precedi ng steps and the problem persi sts, contact your local sales agent or service engineer. Configuration Terminal Failure After the switch is po wered on and the sy stem is nor mal, the booting inform ation will be displayed on the configuration terminal.
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 2900 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 2900 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com 2900 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com 2900 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com 2900, 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 2900.
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 2900. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com 2900 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.
