3Com WL-537S инструкция обслуживания

http://www.3com.com/ Of ficeConnect ® W ir eless 54Mbps/108Mbps 11g Cable/DSL Router User Guide 3CRWER100-75(Model:WL-537) 3 CRWER200-75(Model:WL-537S)[...]

3Com Corporati on 350 Campus Drive Marlbor ough, MA USA 01752-3064 Copyright © 2006 , 3Com Corporation. All rights reserved . No part of this documentation may be re produced in any form o r by any means o r used to make any derivative work (such as translation, t ransformation, or adaptation) without writt en permission fr om 3Com Corporation. 3C[...]

A BOUT T HIS G UIDE This guide describes how to install and configu r e the OfficeConnect Wireless 54Mbps/108Mbps 11g cable/DSL Router(3CRWER100-75 and 3CRWER200-75). This guide is intended for use by those responsible for installing an d setting up network equipment; consequ ently , it assumes a basic working knowledge of LANs (Local Area Networks[...]

8 A BOUT T HIS G UIDE Conventions Ta b l e 1 and Ta b l e 2 list conventions that are used thro ughout this guide. Feedback about this User Guide Y our suggestions ar e very important to us. They will help make our documentation more useful to you. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.com Please include t[...]

Conventions 9 Exampl e: ■ OfficeConnect Wireless 54Mbps/108M bps 11g cable/DSL Router User Guide ■ Part Number DUA0554-T AAA02 ■ Page 24 Do not use this e-mail address for technical support questions. For information about contact ing T echnical Support, please refer to the Support and Safe ty Information sheet. Related Documentation In addit[...]

10 A BOUT T HIS G UIDE[...]

1 I NTR ODUCING THE R OUTER Welcome to the world of networking with 3Com ® . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until r ecently , only large businesses could affor d the networking advantage. The OfficeConnect ® pr[...]

12 C HAPTER 1: I NTRODUCING THE R OUTER Figure 1 Example Network Without a Router When you use the Router in your netwo rk ( Figure 2 ), it becomes your connection to the Internet. Connections can be made directly to the Router , or to an OfficeConnect Switch or Hub, expanding the number of computers you can have in your network. Figure 2 Example N[...]

Router Advantages 13 Router Advantages The advantage s of the Router include: ■ Shared Internet connection for both wired and wir eless computers ■ High speed 802.11g wireless networking ■ No need for a dedicated, “always on” computer serving as your Internet connection ■ Cross-platform operation for compatibility with W indows, Unix an[...]

14 C HAPTER 1: I NTRODUCING THE R OUTER Minimum System and Component Requirements Y our Router requires that the computer(s) and comp onents in your network be configured with at least the following: ■ A computer with an operating system that supports TCP/IP networking protocols (for example Windows 95/98/NT/Me/2000/XP , Unix, Mac OS 8.5 or highe[...]

Front Panel 15 ■ The Router has just been started up a nd is running a self-test routine, or ■ The administrator has invoked the Reset to Factory Defaults command, or ■ The system software is in the pr ocess of being upgraded In each of these cases, wait until the Router has completed th e curr ent operation and the alert LED is Of f. Flashin[...]

16 C HAPTER 1: I NTRODUCING THE R OUTER 5 Cable/DSL Status LED Green (100 Mbps link) / yellow (10 Mbps link) If the LED is on, the link between the Router and the cable or DSL modem is OK. If the LED is flashing, the link is OK and data is being transmitted or received. If the LED is off, nothing is connected, the modem is switched off or there is [...]

Rear Panel 17 9 Ethernet Cable/DSL port Use the supplied patch cable to connect the Router to the Ethernet port on your cable or DSL modem. The port will automatically adjust to the correct speed and duplex, and will set itself to MDI or MDIX depending on the device to which they ar e connected and the type of cable used. 10 Four 10/100 LAN ports U[...]

18 C HAPTER 1: I NTRODUCING THE R OUTER[...]

2 H AR DWAR E I NSTALLATION Introduction This chapter will guide you thr ough a basic installation of the Router , including: ■ Connecting the Router to the Inter net. ■ Connecting the Router to your network. ■ Setting up your computers for ne tworking with the Router . Safety Information WAR NIN G: Please read the “ Safety Information ” [...]

20 C HAPTER 2: H ARDWARE I NSTALLATION When positioning your Router , ensure: ■ It is out of direct sunlight and away from sour ces of heat. ■ Cabling is away from power lines, fluor escent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. ■ W ater or moisture cannot enter the case of th[...]

Before you Install your Router 21 When making connections, be careful not to push the unit up and of f the wall. CAUTION: Only wall mount single unit s, do not wall mount stacked units. Before you Install your Router Before you install and configur e your Router , you need the following additional information. If you do not have this information , [...]

22 C HAPTER 2: H ARDWARE I NSTALLATION If your ISP allocates fixed or static IP information, you need the following information: If your ISP allocates IP information dynamically over a protocol other than PPPoE, you do not need any further information. This configur ation is typical of cable connections. Powering Up the Router T o power up the Rout[...]

Connecting the Router 23 Figure 5 Connecting the Router T o use your Router to conn ect to the Internet through an external cable or DSL modem: 1 Insert one end of the su pplied Ethernet (RJ-45 Category 5) cable into the Cable/DSL port on the rear panel of the Router . 2 Insert the other end of th e cable into the RJ-45 port on your cable or DSL mo[...]

24 C HAPTER 2: H ARDWARE I NSTALLATION T o communicate wirelessly with your Router , your wireless NIC should be set as follows: ■ Encryption — none ■ Service Ar ea Name/SSID — 3Com ■ Channel — 11[...]

3 S ETTING U P Y OUR C OMPUTERS The Router has the ability to dynamica lly allocate network addresses to the computers on your network, using DHCP . However , your computers need to be configured correctly for this to take place. T o change the configuration of your computers to allow this, follow the instructions in this chapter . If your computer[...]

26 C HAPTER 3: S ETTING U P Y OUR C OMPUTE RS Figure 6 Local Ar ea Properties Scr een 6 Ensure that the options Obtain an IP Address automatically , and Obtain DNS server address automatically are both selected as shown in Figure 7 . Click OK . Figure 7 Internet Protocol (TCP/IP) Properties Scr een 7 Restart your computer .[...]

Obtaining an IP Address Automatically 27 Windows XP If you ar e using a W indows XP computer , use the following procedur e to change your TCP/IP settings: 1 From the Windows St art menu, select Control Panel . 2 Click on Network and Internet Connections . 3 Click on the Network Connections icon. 4 Double click on LAN or High Speed Connection icon.[...]

28 C HAPTER 3: S ETTING U P Y OUR C OMPUTE RS Disabling PPPoE and PPTP Client Software If you have PPPoE or PPTP client soft war e installed on your computer , you will need to disable it. T o do this: 1 From the Windows St art menu, select Settings > Control Panel . 2 Double click on Internet Options. 3 Select the Connections T ab. A screen sim[...]

4 R UNNING THE S ETUP W IZAR D Accessing the Wizard The Router setup program is Web-based, which means that it is accessed through your Web browser (Netscape Navigator 4.7 or higher , Internet Explorer 5.0 or higher , or Mozilla 1.2.1 or higher). T o use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Router . Refer [...]

30 C HAPTER 4: R UNNING THE S ETUP W IZARD Figure 10 Router Login Scr een 5 If the password is corr ect, the Country Selection screen will appear . Select the country you wish to configure the Router for , then click Ap ply . ( Figure 11 ) If your purchased your Rou ter in the United States, you do not see this screen, as it is automatically set. F[...]

Accessing the Wizard 31 6 When you have selected a country either: ■ The We lco me scr een will appear ( Figur e 12 ). Select the Wizard tab and click Wizar d. or ■ If your Router has not been configur ed before, the W izar d will launch automatically (refer to Figur e 13 ). 7 Click Next . 8 Y ou will be guided step by step through a basic setu[...]

32 C HAPTER 4: R UNNING THE S ETUP W IZARD Figure 13 Wizard Screen Password Figur e 14 Change Administration Password Scr een When the Change Administration Password screen ( Figur e 14 ) appears, type the Old Password , then a new password in both the New Password and Confirm Password boxes. 3Com recommends entering a new password when setting up [...]

Accessing the Wizard 33 2. Write the new password down and keep it in a safe place, so that you can change your settings in the future. Click Next to display the Time Zone setup screen ( Figur e 15 ). Time Zone Figur e 15 T ime Zone Screen Select your time zone fr om the pull- down menu, check the daylight savings option if r equired, and then clic[...]

34 C HAPTER 4: R UNNING THE S ETUP W IZARD Internet connection mode, have the mod em setting information from your ISP re ady . Select an Internet Addressing mode from the following: ■ PPPoE is requir ed (typically DSL users only) ■ ISP pr ovides configuration dynamically (via DHCP) ■ ISP has pr ovided a static IP address ■ PPTP is requir e[...]

Accessing the Wizard 35 Do not enter anything in this box if your ISP does not require a service name. 4 Enter the MTU value supp lied by your ISP in the MTU text b ox. If your ISP has not supplied an MTU value, leave this at the default value. The default is 1454. 5 Select an idle time from the Maximum Idle Time dr op down list. This is the amount[...]

36 C HAPTER 4: R UNNING THE S ETUP W IZARD 3 If your ISP r equires an assigned MAC addr ess, select Y es, I woul d like to enter a MAC address manually and enter the values for a MAC addr ess if req ui red ( Figure 19 ). If the computer you ar e now using is the one that was previously connected dir ectly to the cable modem, choose Ye s , please cl[...]

Accessing the Wizard 37 PPTP Mode Figure 21 PPTP Mode Scr een T o setup the Router for use with a PPTP connection, use the following procedur e: 1 Enter your PP TP server addr ess in the PP TP Ser ver Address text box. 2 Enter your PPTP use r name in the PPTP User Name text box. 3 Enter your PP TP passwor d in the PP TP Password text box. 4 Enter y[...]

38 C HAPTER 4: R UNNING THE S ETUP W IZARD Figure 22 PPTP IP Settings 8 IP settings must be used when establishing a PP TP connection. Fill in the Initial IP Address and the Initial Subnet Mask fields if your ISP has provided you with these settings. Alterna tively , if the PPTP server is located in your DSL modem, click Suggest to select an IP add[...]

Accessing the Wizard 39 Heart Beat Signal Mode(For Australia only) Figure 23 Heart Beat Signal Mode Scr een T o set up the Router for us e with an L2TP connection, use the following procedur e: 1 IT is a service used in Australia only . If you ar e using Heart Beat Signal connection, check with your ISP for the necessary setup information. 2 Enter [...]

40 C HAPTER 4: R UNNING THE S ETUP W IZARD LAN Settings Figure 24 LAN IP Addr ess Scr een This screen displays a suggested LAN IP address and subnet mask of the Router . It also allows you to change the IP address and subnet mask. DHCP The Router contains a Dynamic Host Configuration (DHCP) server that can automatically configure the TCP/IP setting[...]

Accessing the Wizard 41 Wireless Settings Figure 26 Wireless Configuration Scr een This screen displays the Channel and Service Area Name. It also allows you to change these settings. Ther e are a maximum of 14 channels, the number available to you is dependent on the country you re side in. Selecting Clear Channel Select from the Channel drop-down[...]

42 C HAPTER 4: R UNNING THE S ETUP W IZARD channel you select as this may be usef ul if you experience problems with your clients. Summary Figure 27 Configuration Summary Screen When you complete the Setup W izard, a configuration summary will display . 3Com recommends that you verify the configuration information of the Router and th en print this[...]

Accessing the Wizard 43 Figure 28 Wizard Completed Screen If you have made changes to the LAN Settings or wireless configuration options, you may need to reconfigur e the computer you ar e using in order to make contact with the Router again. Y our Router is now configured and r eady for use. See Chapter 5 for a detailed description of the Rou ter [...]

44 C HAPTER 4: R UNNING THE S ETUP W IZARD[...]

5 R OUTER C ONFIGURATION Navigating Through the Router Configuration Pages This chapter describes all the scr eens available thr ough the Router configuration pages, and is provided as a refer ence. T o get to the configuration pages, browse to the Router by entering the URL in the location bar of your browser . The default URL is http://192.168.1.[...]

46 C HAPTER 5: R OUTER C ONFIGURATION ■ Advanced — allows you to monitor and configure the Router’ s advanced features, including RIP , DDNS and Security . ■ Status and Logs — displays the curr en t status and activity logs of the Router . ■ Support/Feedback — contains a compr ehe nsive online help system and allows you to provide 3Co[...]

Welcome Screen 47 The Notice Board is used to disp lay configuration war ning messages. For example, you would be warned if yo u had disabled wireless networking or wireless encryption. Password Figur e 30 Password Scr een Changing the Administ ration Passwor d Y ou can change the password to prevent unauthorized access to the Administration System[...]

48 C HAPTER 5: R OUTER C ONFIGURATION Wizard Figur e 31 Wizard Screen Click WIZARD... to launch the configuration wizard. Refer to Chapter 4 for information on how to run the wizard. LAN Settings The LAN Settings menu provides the following options: Unit Configuration Figure 32 Unit Configuration Screen[...]

LAN Settings 49 The LAN Settings scr een is used to s pecify the LAN IP address of your Router , and to configure the DHCP server . 1 Select Unit Configuration and then specify t he Router IP Address and Subnet Mask in the LAN Settings section. Th e default IP addr ess of the Router is 192.1 68.1.1. 2 If you want to use the Router as a DHCP Server [...]

50 C HAPTER 5: R OUTER C ONFIGURATION The Wireless Settings menu provides options described in the following sections. T o improve the security of your wireless network, 3 Com recommends that you: 1.Change the SSID from its default value 2.Enable Encryption 3.Enable Connectio n Control Wireless Settings[...]

LAN Settings 51 Figure 34 Configuration Scr een Enable W ir eless Networking Use this check box to enable or disable the wir eless secion of your LAN. When disabled, no wireless PCs can ga in access to either the inter net or other PCs on your Wired or W ireless LAN through this Router . Channel Selection Select a number from the drip-down list to [...]

52 C HAPTER 5: R OUTER C ONFIGURATION Service Ar ea Name/SSID This allows you t o name your Wi r eless network. The Service Area Name/SSID field will accept any alphanumeric string and has a maximum length of 32 characters. Y o ur Wireless computers must be configured with exactly the same name or you will not establish a connection. The Service Ar[...]

LAN Settings 53 Encryption When setting up wireless networks, it is important to remember that with encryption disabled, anyo ne with a W ire less PC can eavesdrop on your network. 3Com recommends that you get the network working with encryption disabled first and then enable it as the last step. This will simplify setting up your network. Y ou can[...]

54 C HAPTER 5: R OUTER C ONFIGURATION WEP T o enable WEP , select WEP from the Security Mode . Encryption : Choose from 64 bits or 128 bits Passphrase :Y ou can enter a passphrase and click on the Generate button and the r outer will automatically generate four WEP keys for you. WEP Key1-4 :Manaually assign a passphrase for each key . If you select[...]

LAN Settings 55 WP A T o enable WP A, select WP A-PSK or WP A2-PSK from the Security Mode . Encryption Methods : Select either TKIP or AES as the encryption method. Passphrase :Enter a passphrase betw een 8 to 63 characters long. Key Renewal :Enter the desired key renewal time in seconds. Click Save to save the setting.[...]

56 C HAPTER 5: R OUTER C ONFIGURATION WP A ! with RADIUS If you are using a RADIUS server in your network for authentication, you may choose WP A or ! WP A2 from the Security Mode . Encryption Methods : Select either TKIP or AES as the encryption method. RADIUS Server: Enter the IP Addr ess of your RADIUS server . RADIUS Port: ; Enter the port numb[...]

LAN Settings 57 Connection Control Y ou can restrict certain wireless clients from accessing the r outer by specifying their MAC addr ess and enabling access restrictn. Select Enabled from the dr op-down menu and choose whether the specified wir eless clients will be pr evente d or permitted to access the wireless network. Enter their MAC addr ess [...]

58 C HAPTER 5: R OUTER C ONFIGURATION Client List Screen The W ir eless Client List provides details on the devices that are connected to the W ir eless LAN. The list is only created when Wireless Networking is enabled. For each device that is connected to the W ir eless Lan, the MAC address and Connection Speed of that device is displayed. As you [...]

LAN Settings 59 Advanced W ir eless Settings Screen Y ou can configure vario us advanced wireless sett ings on this scr een. Click Save to save the setting. Before you can configur e the R outer , you need to know the IP information allocation method used by your ISP . There are four differ ent ways that ISP scan allocate IP information, as describ[...]

60 C HAPTER 5: R OUTER C ONFIGURATION Router you will need to know the following: ■ User name ■ Password ■ Service Name(ifrequir ed by your ISP) When you install the Router , you will not need to use the PPPoE software on your PC.[...]

LAN Settings 61 PPTP (DSL or Cable) PPTP is only used by some European pr oviders. If the installation instructions that accompany your modern ask you to setup a dialup connection using a PPTP VPN tunnel then select this option. T o configure the Router you will need to know the following: ■ User name ■ Password ■ VPN Server address(usually y[...]

62 C HAPTER 5: R OUTER C ONFIGURATION Static IP Address Connection Parameters Screen - Static IP T o setup the Router for use with a Static IP address connection: 1 Select Static IP Address (to be specified manually) in the IP Allocation Mode field. 2 Enter your IP Addr ess in the IP Ad dress text box. This information, along with the rest of the i[...]

LAN Settings 63 Dynamic IP Address Figure 35 Connection Parameters Scr een - Dynamic IP If this mode is selected, your IP Address, Subnet Mask, and DNS Address will be obtained automatically from your ISP . They are not displayed on this screen, but may be viewed on the Status scr een (click on Status and Logs on the left hand menu bar). T o setup [...]

64 C HAPTER 5: R OUTER C ONFIGURATION ■ Use this PC’ s MAC address - This field is automatically filled in with the MAC address of the PC you ar e using to configure the Router . Y ou should use this address only if you were previously using this computer to connect directly to your modem. ■ Enter a new MAC address manually - Use this option [...]

LAN Settings 65 3 Enter your PPP o ver Etherne t user name in the PPPoE User Name text box. 4 Enter a passwor d in the PPPoE Password text box. 5 Enter your PPP over Ethernet service name in the PPPoE Ser vice Name text box. Not all ISPs requir e a PPPoE service name. Only enter a service name if your ISP r equires this. 6 Enter the MTU value suppl[...]

66 C HAPTER 5: R OUTER C ONFIGURATION T o setup the Router for use with a PPTP connection, use the following procedur e: 1 Select PPTP (used by some European providers) in th e IP Allocation Mode field. 2 Enter your PPTP server add r ess in the PPTP Server Address text box (this is typically the address of your modem). 3 Enter your PPTP user name i[...]

LAN Settings 67 Heart Beat Signal Check with your ISP to make su re they support Heart Beat Signal. T o set up the Router for use with a Heart Beat Signal connection, use the following procedur e: 1 Select Heart Beat Signal (For Australia only) in the IP Allocation Mode field. 2 Enter th e Host Name (optional). Some ISPs requir e a host name. If yo[...]

68 C HAPTER 5: R OUTER C ONFIGURATION Firewall On the main frame of the Firewall setup screen is a menu with six tabs: Vi rtual Ser vers , Special Applicati ons , PCs Privileges , URL Filter , Content Filter and SPI . Virtual Servers Selecting the Firewall option on the main menu displays the V irtual Servers setup screen. Virtual Servers Screen DM[...]

Firewall 69 Virtual Server Activating and configuring a virtual server allows one or more of the computers on your network to function as a public server . For example, one of your computers could be configur ed as an F TP server , allowing others outside of your office ne twork to download files of your choosing. Or , if you have cr eated a We b s[...]

70 C HAPTER 5: R OUTER C ONFIGURATION Special Applications Special Applications Screen Select Special Apps tab to display Authorized Application setup scr een. Some softwar e applications requir e special or multiple connections to the Internet and these would normally be blocked by the firewall. For example Inter net T elephony or Video conference[...]

Firewall 71 Only one computer on your net work can use the special application at any one time. SPI Select Firewall fr om the main menu, then select the SPI to display the SPI screen. ! SPI Screen Check the Enable SPI and An ti-Dos Firewall pr otection check box to enable SPI. ! When this feature is enabled, all incoming packets will be blocked exc[...]

72 C HAPTER 5: R OUTER C ONFIGURATION QOS QoS(Quality of Service) manages information as it is transmitted and received. It ensur es better service to those appl ication with a higher priority . Click Save to save the setting. Internet Access Policy Y ou can setup policies that deny or allow specific clients to access the Internet. Enter Policy Nam[...]

Firewall 73 Status :Choose to enable or disable the selected policy . PCs :Click on the Edit List button to specify the network clients. Policy only applies to the PCs that are in the list. Y ou can specify each client by its MAC Addressor IP Addr ess. Y ou can also specify a group of clients by enter ing their IP Address Range. Once you have speci[...]

74 C HAPTER 5: R OUTER C ONFIGURATION Website Blocking Y ou can block the specified clients from accessing certain websites by URL or Keyword. Enter the URL or the Keyword you wish to block. Click Save to save the setting. T o view all the poli cies, click the Summary button.[...]

Firewall 75 Contnet ! Filter Y ou can subscribe to the 3Com Conten t Filter Service, which enables you to block or allow the URL of a numb er of pr e-defined categories. The Router comes with a 14-day free trial of the 3Com Content Filter Service. T o activate the 14-day free trial of the service, you must first register your Router at www .3com.co[...]

76 C HAPTER 5: R OUTER C ONFIGURATION T o activate Content Filtering: 1 Select Firewall form the main menu, then select the Content Filter tab. The Content Filter screen displays. Figur e63 ! Content Filter Screen 2 Make sure the Enable Content Filter check box is checked. 3 Select the Content Filter Server that you r equire from the dr op-down lis[...]

Firewall 77 System T ools The main frame of the System T o ols scr een includes four administration items: Restart , Time Zone, Configuration, and Upgrade . Restart Restart Scr een If your Router is not operating correctly , you can choose to restart the Router by selecting Restart the Router , simulating the ef fect of power cycling the unit. No c[...]

78 C HAPTER 5: R OUTER C ONFIGURATION Time Zone T ime Zone Screen Choose the time zone that is close st to your actual location. The time zone setting is used by the system clock when displaying the corr ect time in the log files. If you use Daylight saving tick the Enable Day Light savings box, and then click Save . The Router reads the correct ti[...]

Firewall 79 Configuration Configuration Scr een Select the Configuration tab to display the Configuration scr een . Backup Configuration Click BACKUP to save the curr ent Router configuration. Y ou will be prom pted to download and save a file to disk. Restore Configuration Data If you want to r einstate the configuration settings previously saved [...]

80 C HAPTER 5: R OUTER C ONFIGURATION Upgrade Upgrade Screen The Upgrade facility allows you to install on the Router any new releases of system software that 3Com may make available. T o install new software, you first need to download the software fr om the 3Com support web site to a folder on your computer . Once you have done this, select Brows[...]

Advanced 81 The upgrade procedur e can take up to two minutes, and is complete when the Alert LED has stopped flashing and is permanently of f. Make sure that you do not interrupt pow er to the Router during the upgrade procedur e; if you do, the software may be corrupted and th e Router may not start up properly afterwar ds. . Advanced Selecting A[...]

82 C HAPTER 5: R OUTER C ONFIGURATION RIP The Router supports the Routing Inform ation Protocol (RIP). RIP allows you to set up r outing information on one RIP enabled device, and have that routing information replicated to all RIP enabled devices on the network. LAN and W AN interfaces can be configured independently of each other . Select the RIP[...]

Advanced 83 DDNS Dynamic Domain Name Server (DDNS) enable s you to map a static domain name to a dynamic IP addr ess. The Router supports two DDNS providers, TZO.com and DYNDNS.org. Before you can set up DDNS, you must obtain an account, passwor d and static domain name fr om your DDNS provider . DDNS is disabled by default. T o set up DDNS: 1 Sele[...]

84 C HAPTER 5: R OUTER C ONFIGURATION 2 Select a DDNS Service provider fr om the dr op-down list. This can be either TZO.com or DynDNS.org. TZO.com If you select TZO.com: 1 In the Domain Name text box, enter the domain name. 2 In the E-mail text box, enter the account name. 3 In the Key text box, enter the account password. 4 Click Save to make thi[...]

Advanced 85 Security Select Security to display the Security screen. Security Screen The Internet connects millions of computer users throughout the world. The vast majority of th e computer users on the Inter net ar e friendly and have no intention of breaking into, stealing from, or damaging your network. However , there ar e hack ers who may try[...]

86 C HAPTER 5: R OUTER C ONFIGURATION 3Com recommends that you leave this feature disabled for maximum security . ■ Allow PING fr om the Internet - PING is a utility , which is used to determine whether a device is active at the specified IP address. PING is normally used to test the ph ysical connection between two devices, to ensure that everyt[...]

Advanced 87 T o re motely administer yo ur Router , enter http://xxx.xxx.xxx.xxx:8000 in the location bar of the browser running on the remote computer , where xxx.xxx .xxx.xxx is the Internet IP address of the Router . Y ou may then login using the administration password. Y our Internet IP address can be found at the bottom of the screen. . Syslo[...]

88 C HAPTER 5: R OUTER C ONFIGURATION Status and Logs Selecting Status and Logs from the main menu displays the Status, ! Logs - and Routing T able in yur W eb br owser window . Status The Statu s scr een displays a tabular repres entation of your network and Internet connection. Status Screen[...]

Status and Logs 89 Logs Logs will allow you to view both the normal events, and security threats logged by the Router . Logs Screen Select Incoming Log or Outgoing Log from the Ty p e drop-down menu. The Incoming Log will display a temporary log of the Source IP Addr esses and Destination Port Numbers fo rthe incoming Internet trafic. Click the Sav[...]

90 C HAPTER 5: R OUTER C ONFIGURATION Select the Routing table tab to display r outing information used by the Router . The information is displayed in the form at shown as below . Selecting Support/Feedback from the main menu displays the Suppor t and Feedback scr eens. Support Support Screen Selecting the Support option on the main menu displays [...]

Status and Logs 91 Feedback Feedback Scr een Selecting the Feedback option displays the Feedback screen and allows you to provide feedback to 3Com on the operation of your Router . This screen should not be used to obtain technical support.[...]

92 C HAPTER 5: R OUTER C ONFIGURATION[...]

6 T R OUBLESHOOTING Basic Connection Checks ■ Check that the Router is connected to your co mputers and to the cable/DSL modem, and that all th e eq uipment is powered on. Check that the LAN Status and Cable/DSL Status LEDs on the Router are illuminated, and that any corresponding LEDs on the cable/DSL modem and the NIC ar e also illuminated. ■[...]

104 C HAPTER 6: T ROUBLESHOO TING Connections tab and click on the LAN Settings button at the bottom. Make sure that the Proxy Server option is unchecked. ■ If you cannot browse to the Router , use the winipcfg utility in Windows 95/98/ME to verify th at your computer has r eceived the correct address information fr om the Router . From the Start[...]

Forgotten Password and Reset to Factory Defaults 105 Forgotten Password and Reset to Factory Defaults If you can browse to the Router configuration screen but cannot log on because you do not know or have forgotten the passwor d, follow the steps below to r eset the Router to it’ s factory default configuration. CAUTION: All your configuration ch[...]

106 C HAPTER 6: T ROUBLESHOO TING ■ If you have a wir ed and a wireless NIC in the same computer , ensure that the wir ed NIC is disabled. ■ Check the status of the Router W ir eless LED, it should be lit if wir eless is enabled and will flash when there is wire less activity . If not lit go to “W ir eless Settings” and enable wir eless net[...]

Power LED or Power Adapter OK LED Not Lit 107 ■ Speed of connection: The 802.11b and 802.11g standar ds will automatically choose the best speed depending on the quality of your connection. As the signal quality weakens then the speed falls back to a lower speed. The speeds supported by 802.11g are 54 Mbps, 48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 [...]

108 C HAPTER 6: T ROUBLESHOO TING Alter natively , quote the p art number for your region: Power Adapter Part Number s Alert LED The Alert LED will flash when the Router unit is first powered up while the system software checks the hardwar e for proper operation. Once the Router has started normal operation , the Alert LED will go out. ■ If the A[...]

Frequently Asked Questions 10 9 Router will enter a “recovery” state; DHCP is disabled, and the LAN IP address is set to 192.168.1.1. Follow the instructions below to upload a new copy of the system software to a Router unit in this state. Ensure that one of your computers has a copy of the new software image file stored on its hard disk or ava[...]

110 C HAPTER 6: T ROUBLESHOO TING How many computers on the LAN does the Router support? A maximum of 253 computers on the LAN ar e supported. How many wireless clients does the Cable/DSL Router support? A maximum of 128 wir eless clients are supported. There are only 4 LAN ports on the Router . How are additional computers connected? Y ou can expa[...]

A U SING D ISCOVERY Running the Discovery Application 3Com provides a user friendly Discovery application for detecting the Router on the network. Windows Installation (95/98/2000/Me/NT) 1 Insert the Router CD-ROM in the CD-ROM dr ive on your computer . A menu will appear; select Router Discover y . Discovery will find the Router even if it is unco[...]

112 A PPENDIX A: U SING D ISCOVERY 3 Highlight the Cable/DSL Router by clicking on it, and press Next . 4 Click on Finish to launch a web browser an d display the login page for the Router . Discovered Finish ! Screen Discovered Router Screen[...]

B IP A DDR ESSING The Internet Protocol Suite The Internet protocol suite cons ists of a well-defined set of communications prot ocols and several standar d application pr otocols. T ransmission Control Protocol/Internet Pr otocol (TCP/IP) is pr obably the most widely known and is a combination of two of the pr otocols (IP and TCP) working together[...]

114 A PPENDIX B: IP A DD RESSING For your network to work correctly , all devices on the network must have: ■ The same sub-network address. ■ The same subnet mask. The only value that will be different is the specific host device number . This value must always be unique. An example IP address is ‘192.168.100.8’. However , the size of the n[...]

How does a Device Obtain an IP Address and Subnet Mask? 115 This type of IP Address operates on a subnet mask of ‘255.255.0.0’. See an example about how a network (only four computers repr esented) and a Router might be configu r ed. IP Addressing and Subnet Masking How does a Device Obtain an IP Address and Subnet Mask? There ar e three differ[...]

116 A PPENDIX B: IP A DD RESSING Automatic IP addressing is a scheme where devices allocate themselves an IP address at random from the indu stry standard subnet of 169.254.x.x (with a s ubnet mask of 255.255.0.0). If two devices allocate themselves the same address, the c onflict is detected and one of the devices allocates itself a new address. A[...]

C T ECHNICAL S PECIFICATIONS This section lis ts the technical sp ecifications for the OfficeConnect Wireless 11g Cabl e/DSL Router . Wireless 11g Cable/DSL Router Interfaces Cable/DSL modem connection — 10Mbps/100Mbp s dual speed Ethernet port (10BASE-T/100BASE-TX) LAN connection — four 10Mbp s/100Mbps dual speed Ethernet port s (10BASE-T/100B[...]

118 A PPENDIX C: T ECHNICAL S PECIFICATIONS Encryption: 40/64 bit WEP , 128 bit WEP , WP A Maximum clients: 128 O/P Power 18dBm Operating T emperature 0 °C to 40 °C (32 °F to 105 °F) Power 7V A, 23.9 BThU/hr Humidity 0% to 90% (non-condensing) humidity Dimensions ■ Wi dth = 220 mm (8.7 in.) ■ Depth = 135 mm (5.3 in.) ■ Height = 24 mm (1 i[...]

119 systems. RSS-210 Environmental: EN 60068 (IEC 68) *See “Regulatory Information(Page 139)” on for condit ions of operation. System Requirements Operating Systems The Router will support the fo llowing Operating Systems: ■ Wi ndows 95/98 ■ Wind ows NT 4.0 ■ Wi ndows ME ■ Wi ndows 2000 ■ Wi ndows XP ■ Mac OS 8.5 or higher ■ Unix [...]

120 A PPENDIX C: T ECHNICAL S PECIFICATIONS[...]

D S AFETY I NFORMATION Important Safety Information WAR NIN G : Warnings contain directions th at you must follow for your personal safety . Follow all directions carefully . Y ou must read the following safety information carefully before you install or remove the unit: WAR NIN G : The Router generates and uses r a dio frequency (rf) energy . In s[...]

122 A PPENDIX D: S AFETY I NFORMATION WAR NIN G : Disconnect the power adapter before moving the unit. WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone so ckets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT : Warnhinweise enthalten Anweisungen, die Sie zu Ihr[...]

123 VORSICHT : Es sind keine von dem Benut zer zu ersetzende oder zu wartende T eile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in V erbindung. VORSICHT : V or dem Ausbau des Geräts das Netzadapterkabel heraus[...]

124 A PPENDIX D: S AFETY I NFORMATION A VERTISSEMENT : L ’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 60 950. Ces conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. A VERTISSEMENT : Il n’y a pas de parties remplaceables p[...]

E E ND U SER S OFTWAR E L ICENSE A GR EEMENT IMPORT ANT : READ BEFORE INST ALLING THE SOF TWARE 3Com END USER SOF TW ARE LICENSE AGREEMENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION (ì3COMî) TO ITS CUSTOMERS FOR THEI R USE ONL[...]

126 A PPENDIX E: E ND U SER S OFTWARE L ICENSE A GREEMENT 3Com and its suppliers. You ag ree to hold such trade secrets in conf idence. You further acknowled ge and agree that ownership of , and title to, the Software and Documentation and all subsequent co pies thereof regardless of the form or media are held by 3Com and its suppliers . UNITED STA[...]

F ISP I NFORMATION Information Regarding Popular ISPs WAN Types Characteristics Popular ISPs Dynamic IP (Clone MAC) Cable modem ISP, non-hostname based. Need to clone the MAC address in the Advanced tab of the Internet Settings page. MediaOne, RoadRunner, Optimum Online, Time Warner, Charter, Adelphia, Metrocast. Dynamic IP (Hostname) Cable ISP, Re[...]

128 A PPENDIX F: ISP I NFORMATION *Bell includes Bell Advantage, Bell Canada, Bell South, PacBell and Southwester n Bell. Static (DSL) DSL Modem, always on. Need to enter ALL IP information from ISP in the Static IP address section of the Internet Settings page. CableSpeed, Cnet, Direct Link, Drizzle, DSL Extreme, E arthlink Wireless, Fast Point, F[...]

G LOSSARY 802.11b The IEEE specification for wireless Ethernet which allows speeds of up to 11 Mbps. The standar d provides for 1, 2, 5.5 and 11 Mbps data rates. The rates will switch automatically depending on range and environment. 802.11g The IEEE specification for wireless Ethernet which allows speeds of up to 54 Mbps. The standard pr ovides fo[...]

130 G LOSSARY configure to use the best common speed. The order of pr efer ence (best first) is: 100BASE-TX full duplex, 1 00BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T half duplex. Au to-negotiation is defined in the IEEE 802.3 standard for Ethern et and is an operation that takes place in a few milliseconds. Bandwidth The information [...]

G LOSSARY 131 95 and Windows 98 will call the server to obtain the address. Windows 98 will allocate itself an addr ess if no DHCP server can be found. DNS Server Address DNS stands for Domain Name System, which allows Inter net host computers to have a domain name (such as 3c om.com) and one or more IP addresses (such as 192.34.45.8). A DNS server[...]

132 G LOSSARY Router A device that acts as a central hub by connecting to each computer's network interface card and managing the data traffic between the local network and the Inter net. Half Duplex A system that allows packets to transmitted an d r eceived, but not at the same time. Contrast with full duplex. Hub A device that regenerates LA[...]

G LOSSARY 133 ISP Inter net Service Provider . An ISP is a business that provides connectivity to the Internet for individuals and ot her businesses or organizations. LAN Local Area Network. A network of end stations (such as PCs, printers, servers) and network devices (hubs and switches) that cover a relatively small geographic ar ea (usually not [...]

134 G LOSSARY PPTP Point-to-Point T u nneling Pr otocol is a method of secure data transmission between two r emote sites over the internet. RIP Routing Information Protocol. RIP a llows an administrator to set up routing informa tion on one RIP enab led device, and have that r outing information r eplicated to all RIP enabled devices on the networ[...]

G LOSSARY 135 TCP/IP T ransmission Control Protocol/Inter net Protocol. This is the name for two of the most well-known protocols developed for the inter connection of networks. Originally a UNIX standard, TCP/IP is now supported on almost all platforms, and is the protocol of the Inter net. TCP r elates to the content of the data travelling throug[...]

136 G LOSSARY Wi-Fi Wireless Fidelity . This is the certification granted by WECA to pr oducts that meet their interoperability criteria. (see also 802.11b, WECA) Wireless Client The term used to describe a desktop or mobile PC that is wir elessly connected to your wireless network Wireless LAN Service Area Another term for ESSID (Extended Service [...]

139 R EGULA T OR Y I NF ORMA TI ON 3Com OfficeConnect Wireless 54Mbps/108Mbps 11g Cable/DSL Router (WL-537, WL-537S) mus t be i n s t alled and u s ed in s trict acco rda nce w ith th e man u factu r er’ s ins truc t ions as d e s c ri bed i n t h e us er d ocument a ti on that co mes wit h th e pr oduc t. This prod uct con tains enc r ypti on. I[...]

140 This device co mpl ies with p a r t 15 o f the F CC Rules . Operatio n i s s ubject to th e foll owi ng two co nditi ons : ( 1 ) This device ma y no t cause harmful in te rfer ence, and ( 2 ) t h is devi ce mu st accept any int e r f erence r e c e i v ed, in cluding in terferenc e th a t ma y caus e un desir e d op er at ion. This equipment ha[...]

141 M AN UF A C TUR E R ’ S D ECLA RA TI ON OF C ONFO RMIT Y 3C om Corp oration 35 0 C a mpus D r ive M a rlborough, MA 017 52-3064, USA ( 800) 527-8677 Date: 03,20 2006 Decl ar es that the Pr oduc t: Br an d N a m e : 3 C om Cor poratio n M odel Number: WL-537, WL-537S Equi pmen t T y pe: 3Com OfficeConnect Wireless 54Mbp s/108Mbps 11g Cable/DSL[...]

142 C ANAD A – I ND UST R Y C ANA DA (IC) This device complies with RSS 210 of Industry Canada. Operatio n i s s ubject to th e foll owin g two co nditio n s : ( 1) th i s devic e may not caus e interference, and ( 2 ) th is devi ce mus t accept any int e r f eren ce, inc luding interferenc e that may caus e und es ired op er ati on of this devi [...]

143 E UR O PE – EU D ECLA RA TI ON OF C ON F O RMIT Y Intended use: IEEE 802.11g/b radio LAN device NOTE: T o ensure product operation is in complian ce with local regulations , select the country in which the product is installe d. Refer to 3Com OfficeCo nnect W ir eless 54Mbps/108Mbps 11g Cable/DSL Router User Guide. E UR O PE - D ECLA RA TI ON[...]

144 Greek 3Com Corporation RLAN device 1999/5/ Italian Con la presente 3Com Corporatio n dichiara che questo RLAN device è conforme ai requisiti essenziali ed alle altre disposizioni pertinenti st abilite dalla direttiva 1999/ 5/CE. S panish Por medio de la pre sente 3Com Corporation declara que el RLAN device cumple con los requisitos esenciales [...]