3Com 4210G инструкция обслуживания

3Com Switch 4210G Family Getting Started Guide Manual Version: 6W100-20100203 www.3com.com 3Com Corporation 350 Campus Drive, Marlborou gh, MA, USA 01752 3064[...]

Copyright © 2010, 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, transform ation, or adaptation) without written permiss ion from 3Com Corporation. 3Com Corporation re serves the right to revise this docu mentation and [...]

About This Manual Organization 3Com Switch 4210G Family Getting Started Guide i s organized as follows: Chapter Contents 1 Router Overview Briefly introduces the appearance, syst em description, as well as the features and applications of the 3Com Switch 4210G Family. 2 Preparing for Installation Describes the requirem ents on installation site, th[...]

GUI conventions Convention Description Boldface Window names, button names, field names, and me nu items are in Boldface. For example, the New User window appears; click OK . > Multi-level menus are separated by a ngle brackets. For example, File > Create > Folder . Symbols Convention Description Means reader be extremely careful. Im prope[...]

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

ii Mounting the Switch on a Workbench ····························································································· ······· 3-8 Connecting the Gr ounding Cable·····································?[...]

iii Configuration Sy stem Failure ··································································································· ··············· 6-4 Troubleshooting when there is no terminal display ················[...]

1-1 1 Product Overview Overview 3Com Switch 4210G Family (herein after referre d to as the Switch 4210G ) are Layer 3 Gigabit Ethernet switching product s developed by 3Com Corporation. (Herei naf ter referred to as 3Co m). The Switch 4210G are designed a s distribution or access device s for intranet s and metropolit an area networks (MANs). Suppo[...]

1-2 Item 4210G 24-Port 4210G NT 24-Port 4210G 48-Port 4210G NT 24-Port 4210G PWR 24-Port 4210G PWR 48-Port Power socket types and quantity 1 AC power socket and 1 RPS power socket : The two power inputs ca n be sim ultaneously used, acting a s backup for each other. Alternati vel y, you can use either power inpu t. AC input Rated voltag e range: 10[...]

1-3 Introduction to Switch 4210G Switch 4210G 24-Port Front Panel Figure 1-1 Front panel of the Switch 4210G 24-Po rt Ethernet switch (1) 10/100/1000 Base-T aut o-sensing Ethernet port (2) 10/100/1000 Base-T aut o-sensing Ethernet port status LED (3) 1000Base-X SFP port (4) 1000B ase-X SFP port status LED (5) Console port (6) Seven-segment LED (7) [...]

1-4 Switch 4210G 48-Port Front Panel Figure 1-3 Front panel of the Switch 4210G 48-Po rt Ethernet switch (1) 10/100/1000 Base-T aut o-sensing Ethernet port (2) 10/100/1000 Base-T aut o-sensing Ethernet port status LED (3) Console port (4) Seven-se gment LED (5) Port mode LED (Mode) (6) System status LED (P WR) (7) RPS status LED (RPS) (8) Inte rfac[...]

1-5 Switch 4210G PWR 24-Port Front Panel Figure 1-5 Front panel of the Switch 4210G PWR 2 4-Port Ethernet switch (1) 10/100/1000 Base-T aut o-sensing Ethernet port (2) 10/100/1000 Base-T aut o-sensing Ethernet port status LED (3) 1000 Base-X SFP port (4) 1000B ase-X SFP port status LED (5) Console port (6) Seven-segment LED (7) Port mode LED (Mode)[...]

1-6 Switch 4210G PWR 48-Port Front Panel Figure 1-7 Front panel of the Switch 4210G PWR 4 8-Port Ethernet switch (1) 10/100/1000 Base-T aut o-sensing Ethernet port (2) 10/100/1000 Base-T aut o-sensing Ethernet port status LED (3) Console port (4) Seven-se gment LED (5) Port mode LED (Mode) (6) System status LED (P WR) (7) RPS status LED (RPS) (8) I[...]

1-7 Switch 4210G NT 24-Port Front Panel Figure 1-9 Front panel of the Switch 4210G NT 24 -Port Ethernet switch (1) 10/100/1000 Base-T aut o-sensing Ethernet port (2) 10/100/1000 Base-T aut o-sensing Ethernet port status LED (3) 1000 Base-X SFP port (4) 1000B ase-X SFP port status LED (5) Console port (6) Seven-segment LED (7) Port mode LED (Mode) ([...]

1-8 Switch 4210G NT 48-Port Front Panel Figure 1-11 Front panel of the Switch 4210G NT 48-Port Ethernet switch (1) 10/100/1000 Base-T aut o-sensing Ethernet port (2) 10/100/1000 Base-T aut o-sensing Ethernet port status LED (3) Console port (4) Seven-se gment LED (5) Port mode LED (Mode) (6) System status LED (P WR) (7) RPS status LED (RPS) (8) Por[...]

1-9 Table 1-2 Console port specifications Item Specification Connecto r type RJ-45 Compliant standard EIA/TIA-232 Transmission baud rate 9600 bps to 115200 bps (d efaulting to 19200 bps) Service z It can be connected to an ASCII terminal. z It can be connected to a serial port of a local or rem ote (through a pair of modems) PC runni ng terminal em[...]

1-10 Combo Port One SFP port and the corresp onding 10/100/1000Base- T Ethernet port form a Combo port. For each Combo port, either the SFP port or the correspon ding 10/100/1000 Base-T Ethernet port can be used at a time. For details about the co mbo port mapping relationship, please refer to T able 1-4 . Table 1-4 Combo port mapping rel ationship[...]

1-11 System Status LED The system status LED hel ps you determine t he working st atus of the switch. Refer to Table 1-6 for the details. Table 1-6 System status LED description LED Status Description Steady green The switch is started normally. Flashing green (1 Hz) The system is performing power-on self test (POST). Steady red POST failed. Flashi[...]

1-12 Table 1-9 Port mode LED description LED Status Description Steady green Indicates port rate. Flashing green (1 Hz) (supporte d by PoE switches only) Indicates port PoE power supply. Mode Steady yellow Indicates port duplex mode. Seven-Segment LED The seven-segment LED and the syst em st atus LED together indicate the operating st atus of the d[...]

1-13 Status LED System status LED (PWR) Seven-segment LED Description The LED displays the specific numbe rs. The member ID of the current switch in the IRF sy stem. Switch 4210G NT 24-port and Switch 4210G NT 48-port do not support IRF. The seven-segment LED, the syst em st atus LED, and the port mo de LED on the Switch 4210G PWR 24-port or Switch[...]

1-14 Status Port mode LED Ethernet port status LED Description Steady green PoE power supply is normal. Flashing green (1 Hz) Power consumption of the dev ice connected to the port exceeds the upper limit of the power su pply consumption of the port, or the available power of the switch is not enoug h for power supply of the port. Steady yellow PoE[...]

1-15 Interface Module Status LED Table 1-14 Interface module status LED de scription Mark Status Description Green The interface module is in the slot and o perates normally. Flashing yellow The inserted interface module type is incorrect or the interface module fails. MOD1 MOD2 Off No interface module is installed. Optional Interface Modules The S[...]

1-16 Figure 1-14 Front panel of short-haul dual-port 10 G E CX4 interface module A short-haul dual-port 10 GE CX4 interface module prov ides two 10 Gbps ele ctrical ports and sup ports CX4 electrical and protocol st andard s. Only 3Com’ s CX4 power cables can be used for conn ecting the CX4 ports. A CX4 cable is hot swappabl e and its maxi mum tr[...]

1-17 A dual-port 10 GE XFP interface module provid es two 10 Gbp s XFP optical port s. Y ou can insert an XFP transceiver into the port to connect it to another XFP port through an optical fiber . Y ou can select the following XFP transceivers in T able 1-17 as required. Table 1-17 XFP transceivers sup ported by 10 GE XFP interface module Transceiv[...]

1-18 insert an XFP transceiver into the port to connect it to another XFP port through an optical fiber . Y ou can select the XFP transceivers list in T able 1-1 7 as required. Dual-Port 10 GE SFP+ Interface Module Figure 1-20 Dual-port 10 GE SFP+ interfa ce module Figure 1-21 Front panel of dual-port 10 GE SFP+ interface module A dual-port 10 GE S[...]

1-19 Figure 1-22 SFP+ cable z You are recommended to use SFP + transceivers and SFP+ cables of H3 C on the switch 4210G. z The types of SFP+ transceivers and SFP+ cabl es may update with time. For information about transceivers, contact 3Com technical support or marketing staff. Description of LEDs of Interface Modules There is a LED for each port [...]

2-1 2 Preparing for Installation Safety Precautions Before you install or remove any components from the Switch or carry o ut any maintenance procedures, you must read the 3Com Switch F amily Safety and Regulatory In formation document enclo sed with your switch. T o avoid damage to human body and devices, pl ease read the following safety recom me[...]

2-2 Temperature/Humidity Y ou must maintain a proper temperature and humi dit y in the equipment room. Long-term high humidity may lead to bad insulation, electricity leakage, me chanical property chan ges, and metal corro sion. However , if the relative humidity is two low , captive screws may become lo ose as the result of contraction of insulati[...]

2-3 z Keep the device far from radio transmitting station s, radar stations, and hi gh-frequen cy devices. z Use electromagnetic shielding wh en necessary, for example, use shielded interface cables. z Route interface cables o nly indoors to prevent si gnal ports from getting damaged by overvoltage or overcurrent caused by lightning strike s. Laser[...]

3-1 3 Installing the Switch When you ask your sales age nt to maintain the switch, you must ensure that the dismantlement-preventive seal on a mounting screw of the 3Com switch chassis is intact. If you want to open the chassis, you should co ntact the agent for permission . Otherwise, you will bear any consequence resulted from your actio ns witho[...]

3-2 The Switch 4210G (excluding Switch 42 10G NT 24-Port and Switch 4210G NT 48-Port) su pport IRF. For details about impleme ntation of the IRF system and installati on procedures, refer to Installation Flow for an IRF . Installing the Switch into a 19- Inch Rack Using Mounting Brackets The installati on methods of a switch depend on t he depth an[...]

3-3 Figure 3-3 Appearance of a rear mounting bracket (1) Screw hole use d to fix the mounting br acket to the cabinet (Use one M6 screw) For the selection of front and rear mounting bracket s, see T able 3-2 . Table 3-2 Selection of mounting bracket for Switch 4210G Model Ph ysical dimensions (H × W × D) Configuration type of front mounting brack[...]

3-4 Figure 3-4 Fix front mounting brackets (1) (1) Front panel of the switch Step4 Place the switch horizontally in a proper position, and fix the other end of mounting bracket s to the front bracket s with screws and captive nut s, as shown in Figure 3-5 . Figure 3-5 Fix front mounting brackets (2) (3) (1) (1) (2) (1) Front square-holed po st (2) [...]

3-5 Step5 Place the switch on the tray horizontally , slide the tr ay into the cabinet, and fix the other end of mounting bracket s to the front brackets with cre ws and captive nuts, as sho wn in Figure 3-5 . Use Front and Rear Mounting Brackets to Install a Switch Only the Switch 4210G PWR 24-Port and Switch 42 10G PWR 48-Port support inst allati[...]

3-6 Figure 3-7 Fix rear mounting brackets (1) Rear square-holed po st (2) Rear mounting bracket Step6 Hold the bottom of the switch with one hand and the front pa rt of the switch with the other h and, and push the switch into the cabinet gently , as shown in Figure 3-8 . Figure 3-8 Fix front and rear mounting brackets (1) (1) (7) (3) (4) (5) (6) ([...]

3-7 Figure 3-9 Effect diagram of front and rear mounting bracket installation (1) (1) (2) (3) (4) (1) Rear panel (2) Rear square-hole d post (3) Load-bearing screw (4) Rear mounting bracket Step7 Fix the other end of the front mounting brackets to the front bracket s with screws and captive nuts and ensure that front and rear mounting bracket s hav[...]

3-8 Figure 3-10 Effect diagram of front and rear mounting bracket installation (2) (1) Load-bearing screw (2) Rear mounting bracket (3) Front panel (4) Screw used to fix front mounting brackets to front bracket s (5) Front mounting bracket (6) Front square-holed po st Mounting the Switch on a Workbench In many cases, stand ard 19-inch ra cks are no[...]

3-9 Connecting the Grounding Cable z Correctly conne cting the chassis g rounding ca ble is cruci al to the lightning protection and electromagnetic susceptibil ity (EMS) of a switch. z The power and groundi ng terminals in this section a re for illustration only. The power input end of the switch is connected with a noise filter , whose central gr[...]

3-10 Step1 Cut the PGND cable to a proper length according to the distance bet ween the switch and the grounding strip. Step2 Peel 5 mm (0.20 in.) of insulation sheath using a wire strippe r , and then insert the naked met al p art through the black insulation covering into the end of the OT terminal . Step3 Secure the metal part of the cable to th[...]

3-11 Figure 3-13 Ground the switch by buryi ng the grounding conductor into the earth (1) Grounding scre w (2) PGND cable (3) Earth (4) Joint (5) Grounding con ductor (6) Switch rear panel In Other Installation Sites For an AC-powered switch, if neither of the above- mentioned two conditions is a vailable, ground the switch through the PE wire of t[...]

3-12 Connecting the Power Cords Make sure that the ground wire h as been properly connected befor e powering on the switch. Table 3-3 Power cord connection m ethods of the Switch 4210 G Switch module Power supply mode Connection method AC power supply Connecting the AC Power Cord Switch 4210G 24-Port Switch 4210G 48-Port Switch 4210G NT 24-Port Swi[...]

3-13 Figure 3-16 Connect an AC powe r cord to a horizontal AC po wer socket (2) Figure 3-17 Connect an AC powe r cord to a vertical AC power so cket (1) Figure 3-18 Connect an AC powe r cord to a vertical AC power so cket (2) Connecting the RPS Power Cord Connect RPS power cords of the Sw itch 4210G (excluding Switch 4210G PWR 24-Port and Switch 42[...]

3-14 Figure 3-19 Connect an RPS power cord (1) Step3 Keep the upside of the +12 VDC RPS plu g on top and plug it in the RPS DC receptacl e (see callout 1 in Figure 3-20 ). (If you plug it with the upsi de down, the in sertion is not smooth because of the specific structure design of the RP S DC recept acle and the RPS plug.) Step4 Use a flat-blade [...]

3-15 Figure 3-21 Connect an RPS power cord to the Switch 4210 G PWR 24-Port and Switch 4210G PWR 48-Port Step4 Connect the other end of the RPS DC power cord to the external RPS power supply system. Step5 Check whether the RPS LED on the front pan el of the switch is ON. If the LED is ON, it shows the p ower cord is properly connected. Installing a[...]

3-16 Figure 3-23 Install an interface module (2) z Keep the removed filler panel properly for future u se. z When tightening the fa stening screws at both si des of the optional module with a screwdriver or an electric screwdriver, make sure that the torque is not bigger than 0.4 N-m. Removing an Interface Module Step1 Wear an ESD-preventive wrist [...]

3-17 The installation and re moval of dedicated CX4 cabl es and SFP+ cables are similar. This section describes the installation and removal of the dedicated CX4 cable f or illustration. Make sure that you have installed a CX4/SFP+ inte rf ace module before installin g CX4/SFP+ cables. Step1 Put on an ESD-preventive wrist strap and verify t he ESD-[...]

3-18 Installation Flow for an IRF Figure 3-24 Installation flow for an IRF Table 3-4 Description of the installation flow for an IRF of switch es No Task Remarks 1 Draw a plan for an IRF with switches Take the following into consideration: z Number of IRF members and the bandwidth z Interface modules and cables z Physical connection mode( dai sy ch[...]

3-19 No Task Remarks 4 Power on the IRF members — 5 Install interface modules For detail s, see Installing an Interface Module . 6 Configure software for the IRF members For details about the IRF function, see IRF Configuration in the System Volume of the 3Com Switch 4210G Family Configuration Guid e . 7 Power off the switches — 8 Connect th e [...]

3-20 Configure the physical connection mode IRF support s two physical conne ction modes: daisy chain connection and ring connection. A ring connection is mo re reliable than a daisy ch ain connection. The failure of one link in a ring connection does not affect the function and pe rformance of the IRF, whereas the failure of one link in a daisy ch[...]

3-21 z When 2-port interface module s are used to consti tute an IRF of switches and the ports a re not assigned to any aggregation group, p orts of the interface module in slot 1 (MOD 1) can be connected to ports of MOD 1 or MOD 2. Ho wever, the left port can be connected to only the right port of another interface module, t hat is, two ports at t[...]

3-22 Figure 3-29 Cable connections for a n IRF with 1-port interface modules Verifying the Installatio n z Check whether the selecte d power is the same as the power label on the swit ch; z Check whether the groun d wire is connected; z Check wheth er the power cord s are connected correctly; z Check whether all the interface cable s are routed ind[...]

4-1 4 Starting and Configuring the Switch 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 ca ble. Figure 4-1 Network diagram for configuration enviro nment setup Connecting the Console Cable Console Cable A console c[...]

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 these steps to connect a terminal device to the switch using t he console cable: Step1 Plug the DB-9 female connector of the console cable 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 perT erminal to enter the HyperT erminal windo w . The Connection Description dialog box appears, as shown belo w . Figure 4-3 Connection descr[...]

4-4 Step3 Click OK after selectin g a serial port. The following dialog box a ppears. Set Bit s per second to 19200 , Dat a bit s 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 window show[...]

4-5 Step5 Click Properties in the HyperT erminal window to en ter 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 Powering on the Switch Before powering on the switch, verify that: z The pow[...]

4-6 Creation date : May 18 2009, 17:01:57 CPU Clock Speed : 264MHz BUS Clock Speed : 33MHz Memory Size : 128MB Mac Address : 001cc5bc3111 Press Ctrl-B to enter Boot Menu... 1 The last line asks whether you want to enter the Boot Menu. The system waits one second for your response. z The system has t wo startup modes: normal star tup and fast startu[...]

4-7 Item Description 4. Delete file from flash Dele te files from the flas h memory 5. Modify bootrom password Modify the Boot ROM password 6. Enter bootrom upgrade menu Enter the Boot ROM update menu 7. Skip current configuration file Skip the current configuration file (this configuration is valid once) 8. Set bootrom password recovery Re store t[...]

4-8 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. Skip current configuration file 8. Set bootrom password recovery 9. Set switch startup mode 0. Reboot Enter your choice(0-9): Enter 9 , and the sys[...]

4-9 BUS Clock Speed : 33MHz Memory Size : 128MB Mac Address : 001cc5bc3111 Press Ctrl-B to enter Boot Menu... 0 In normal st artup mode, the waiting time here is five se conds. If you press Ctrl + B within five seconds, the Boot Menu is disp layed. If you press Ctrl + B within five second s, the Boot Menu is displayed: If you perform no operation o[...]

4-10 Y ou can configure the switch now . The Switch 4210G provid e abundant command views. For detailed descriptions about the configuration commands and CLI, refer to 3Com Switch 4210G Family Configuration Guide , 3Com Switch 4210G Family Command Refere nce G uide.[...]

5-1 5 Boot ROM and Host Software Loading Introduction to Loading Modes The switch so ftware consist s of Boot ROM sof tware (.btm) and host sof tware (.bin). Y ou can load both the two types of software thro ugh the approaches displayed in T able 5-1 . Table 5-1 Approaches for loading sof tware on the switch Approach Section Loading Software Using [...]

5-2 CPU Clock Speed : 264MHz BUS Clock Speed : 33MHz Memory Size : 128MB Mac Address : 001cc5bc3111 Press Ctrl-B to enter Boot Menu... 1 Press Ctrl + B . The syst em displays: Password : z To enter the Boot Menu, you must press Ctrl + B within one second after th e information “Press Ctrl-B to enter Boot Menu... ” appears. Otherwise, the system[...]

5-3 The loading process of the Boot RO M software is the same a s that of the host software, except that during the Boot ROM loading proces s, you must enter the different digit after entering the Boot Menu and the system gives somewhat diffe re nt prompts. The following text mainly de scribes the Boot RO M loading process. Loading Software Using X[...]

5-4 Task Remarks Restart the switch to make the updated Boot ROM file effective Required 1) Enter the Boot ROM update menu on the swit ch Enter the Boot ROM menu, and then enter 6 af ter the system displays “Enter your choice (0-9):” to enter the Boot ROM update menu. Bootrom update menu: 1. Set TFTP protocol parameter 2. Set FTP protocol param[...]

5-5 4) Change the rate of the serial port on the terminal T o ensure communication betwe en the terminal and the switch, the baud rate o f the serial port on the terminal should be consi stent with that of the console port on the switch. Step1 Select Call > Disconnect in the HyperT erminal window to disconnect the terminal from the switch. Figur[...]

5-6 Figure 5-3 Modify the baud rate Step3 Select Call > Call to reestablish the connection. Figure 5-4 Reestablish the conne ction The new settings can take effect only after you re establish the connection. 5) Download the Boot ROM file Step1 Press Enter in the HyperT erminal window to start downloading the program. The system di splays the fol[...]

5-7 Step2 Select T ransfer > Send Fil e in the Hype rT erminal’s wi ndow . Click Browse in the pop-up dialog box (as shown in Figure 5-5 ) to select the application file to be download ed (for example, bootrom.btm ), and select Xmodem from the Protocol drop-down list. Figure 5-5 Send file dialog box Step3 Click Send . The following dialog box [...]

5-8 6) Restore the download rate to the default Set the baud rate to 19200 bps (refer to Change the rate of the serial port on the terminal on p age 5-5 for detailed operation). 7) Restart the switch to make the updated Boot ROM file effective Press Enter in the HyperT erminal window to return to the Boot ROM update menu. BOOT MENU 1. Download appl[...]

5-9 Figure 5-7 Load Boot ROM software through TFTP/FTP z You can use one PC as both config uration device and TFTP se rver. z The TFTP/FTP server prog ram is not provided with th e Switch 4210G. Make sure that it is available by yourself. Step2 Run TFTP Server on the server connected with the sw itch’ s Ethernet port, and specify the path of the [...]

5-10 Loading........................................done Bootrom updating..........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. Skip current configuration file 8. Set bootrom password recove[...]

5-11 Step1 Connect an Ethernet port (GigabitEthernet 1/0/25, for exam ple) of the switch to the se rver (whose IP address is available) that p rov ides the file (usually the .bin file or the .btm file) to be downloaded, and connect the console port of the switch to a PC, as shown in Figure 5-7 . Step2 Run FTP Server on the server connected with the[...]

5-12 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. Skip current configuration file 8. Set bootrom password recovery 9. Set switch startup mode 0. Reboot Enter your choice(0-9): Step7 Enter 0 to res[...]

5-13 <Sysname> ftp 202.10.10.53 Trying ... Press CTRL+K to abort Connected. 220 WFTPD 2.0 service (by Texas Imperial Software) ready for new user User(none):4210G 331 Give me your password, please Password: 230 Logged in successfully [ftp] get 4210G.bin [ftp] get 4210G.btm [ftp] bye Step2 Update the Boot ROM program on the switch. <Sysname[...]

6-1 6 Maintenance and Troubleshooting Software Loading Failure If software loading fail s, the system keeps runni ng in or iginal version. In this case, check if the physical ports are properly conn ected. z If the ports are not properly connected, reco nnect th em correctly and re start the loading procedure. z If the ports are properly connected,[...]

6-2 Power Supply Failure The Switch 4210G use fixed power modules. Ea ch of the Switch 4210G has three input mode s, namely , AC input, RPS input and both. Y ou can check whether the power syst e m of the switch fails by view ing the sy stem status LED (PWR) and RPS status LE D (RPS) on the front pan el of the switch. For details, refe r to Table 6[...]

6-3 z Check whethe r the AC power cord is well c onnecte d to the switch, whether the AC receptacle on the switch and the AC power socket are faulty. z Check whether the AC extern al po wer supply system is normal. z Check whether the switch is we ll connect ed to the external RPS power supply. z Check whether the external RPS power supply works no[...]

6-4 The Switch 4210G switche s use fixed fans. If a fixed fan failure occurs, you cannot solve the problem by yourself. Please contact your sales age nt or service engineer . To ensure the normal operation of the swit ch, you need to contact the local sales agent or service engineer as soon as po ssible when a fixed fan failure occurs. Configuratio[...]