3Com 2900 manuale d’uso

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. 3Com Corporation re serves the right to revise this docu mentation and t[...]

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. 2 Installation Preparations Describes the requiremen ts on ins[...]

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 Switch 2900 docu mentation set includes th e following: Manual Description 3Com Baseline Switch 2900 Family User Guide Describe how to configure your 3Com[...]

i Table of Contents 1 Product Ov erview ······································································································································ 1-1 Introduction ············[...]

ii Laser Sa fety ···································································································································· 2-2 Installati on Tools ······················[...]

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. With 10/100/1000 Mbp s Ethernet interfaces, the[...]

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-HPWR Plus AC Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz Maximum voltage range: 90 VAC to 264 VAC, 47 Hz or 63 Hz Inp ut volt ag e RP S DC ?[...]

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 wer) (4) Console p ort (5) 1000Base-X SFP interface 10/100/1000Base-T autosen sing Ethernet ports on the 3Com Baseline Switch 2900 Family are numbered [...]

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 wer) (4) Console p ort (5) 1000Base-X SFP interface Rear Panel Figure 1-4 3Com Baseline Switch 2928-SFP Plus rear pan el (1) AC recept acle (2) Groundin[...]

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 Ethernet port status LED (3) Console p ort (4) Power LE D (Power) (5) 1000Base-X SFP interface (6) 1000Base-X SFP interface status LE D Rear Panel Figure 1[...]

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 button (3) Port status LED (4) Power LED (Po wer) (5) Port mode LED (6) Console port Port (7) 1000Base-X SFP interface Rear Panel Figure 1-8 3Com Baseline [...]

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 button (3) RPS status LED (RPS) (4) Port status LED (5) Power LED (Po wer) (6) Port mode LED (7) Console port (8) Port 1000Base-X SFP interface Rear Pane[...]

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. Ports Console Port Each 3Com Baseli[...]

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 . Table 1-4 Transceivers suppo rted by the 3Com Baseline Switch 2900 Family 1000Base-X SFP interfaces Transceiver ty pe Transceiver Central wavelength Connec[...]

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 . 10/100/1000[...]

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. Table 1-8 3Com Baseline Switch 29 28-PWR Plus/3Com Baseli [...]

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 yellow The port operates at a rate of 10/100 Mbps Fast blinking yellow Data is tran smitted or received at a rate of 10/100 Mbps 3Com Baseline Switch 2[...]

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. Table 1-10 1000Base-X SFP interface status LEDs description LED Meaning Solid green The port operates at a rate of 1000 Mbps The port i[...]

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. z Do not place the switch near water or in a dam p en vironment. Prevent wat[...]

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. Table 2-1 Dust concentration limit in the equipment room Substance Concentration li[...]

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. Installation Tools z Flat-blade screwdriver z Phillips screwdriver z ESD-preventive wri st strap No installation tools are shipped with the 3Co m Baseline Switch [...]

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. Otherwise, you will be responsible for irreversible damag es caused by y[...]

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-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 [...]

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. T able 3-2 shows the po sition support for the 3Com Baseline Switch 2900 Fami ly . Table 3-2 Description of mounting position support fo r the 3Com Baseline Switch 290 0 Family Model[...]

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 mounting bracke t on the cha ssis (rear mounting) Mounting the Switch to a Rack Step1 Put on an ESD-preventive wrist strap and make sure the rack is [...]

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. Then fix the mounting brackets. Figure 3-9 Mount the 3Com Baseline Switch 2 928-PWR Plus to a rack Installation of other 3Com Baseline Switch 290[...]

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. Step2 Attac[...]

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 attach the other end of the PGND ca ble to the gr ounding strip in the equipment room, follow the se steps: Step1 Cut the PGND cable to a proper length acc[...]

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. The PGND cable of the switch should be connected to the[...]

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. Connecting the Power Cord Connecting an AC P[...]

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 . Follow these step s to install a DC powe r cord: Step1 Connect one end of the supplied PG[...]

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. Figure 4-1 Network diagram for configuration enviro nment setup Connecting the Console Cable Console Cable A console cable is an 8-core sh[...]

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 steps to connect a terminal device to the switch using t he console cable: 1) Plug the DB-9 female connector of the console c able to the serial port of[...]

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 . The Connectio n Des cription dialog box appears, as shown below . Figure 4-3 Connection des[...]

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 . Figure 4-5 Set the serial port parameters Step4 Click OK after setting the serial port parameters an d the system enters the HyperT erminal wind ow show[...]

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 . Figure 4-7 Set terminal emulation in Switch Properties dialog box Booting the Switch Checking Before Power-On Before powering on the switch, verify that: z The power cable is pr[...]

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. The system wait s one second for your response. z The system has t wo startup mode[...]

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. Set switch startup mode Set the startup mode of the switch 0. Reboot Restart the switch z If [...]

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. Delete file from flash 5. Modify BootRom password 6. Enter BootRom upgrade menu 7.[...]

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. Press Enter and enter the correct username ( admin by default) and password (no password[...]

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 .bin . z Loading application files: Download the host softwar e package to the flash mem ory on the switch and set the attribut[...]

5-2 Introduction to the Boot ROM Menu Starting...... ************************************************************************ * * * 3COM 2928-SFP Plus BOOTROM, Version 102 * * * ************************************************************************ Creation Date : Jan 8 2009 CPU Type : ARM926 CPU L1 Cache : 32KB CPU Clock Speed : 333MHz Memory Ty[...]

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. Reboot Enter your choice(0 -9): The items in the Boot ROM menu are describ ed in T able 4-2 z Currently, Boot ROM files are not provid ed separa tely by the 3Com Baseline Switch 290 0 Famil[...]

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. Change the rate of the seri al port on the terminal Optional Set the baud rate of the serial po rt on the terminal to be consistent with that of the cons[...]

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. Return to boot menu Enter your choice(0-3): The items in the protocol p[...]

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. z Typically, the size of a .bin file is over 9 MB. Even at a [...]

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. The following i[...]

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 ...CCCC Done! Will you Update Basic BootRom? (Y/N):Y The sy[...]

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. 10) Restarting the swit ch to make the updated Boot ROM file effective P[...]

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 . Loading a Boot ROM file Complete the following t [...]

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. Start the switch[...]

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 the swit ch without specifyi ng the gateway’s IP addres s; if they are not on the same segment, you need to specify the gatew ay’s IP address so tha[...]

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. After loading the applicatio n file, the switch displays that you should configure the application attribute, that is, main ,[...]

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 . Figure 5-9 Load applications using FT P through Ethernet port 2) Run the FTP [...]

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 switch Gateway IP Address : IP address of the gateway FTP User Name Username for logging in to the FTP server, whi ch should be consistent with that config[...]

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. The pro[...]

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. z If so, view the loading procedure information di splayed on the[...]

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. W[...]

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. If the config [...]