1. DL manuals
  2. 3Com
  3. Network Router
  4. 3CRWDR200A-75-US - OfficeConnect ADSL Wireless 108 Mbps 11g Firewall Router
  5. User Manual

3Com 3CRWDR200A-75-US - OfficeConnect ADSL Wireless 108 Mbps 11g Firewall Router User Manual

Manual is about: ADSL Wireless 108Mbps 11g Firewall Router

Summary of 3CRWDR200A-75-US - OfficeConnect ADSL Wireless 108 Mbps 11g Firewall Router

  • Page 1

    Http://www.3com.Com/ part no. 10015251 rev. Ab published august 2008 officeconnect® adsl wireless 108mbps 11g firewall router user guide model wl-553 3crwdr200a-75 3crwdr200b-75.

  • Page 2

    3com corporation 350 campus drive marlborough, ma usa 01752-3064 copyright © 2008, 3com corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without writt...

  • Page 3: Ontents

    C ontents a bout t his g uide naming convention 9 conventions 9 related documentation 10 1 i ntroducing the r outer officeconnect adsl wireless 108mbps 11g firewall router 11 firewall router advantages 13 package contents 13 minimum system and component requirements 14 front panel 14 rear panel 16 2...

  • Page 4

    Windows 95/98/me 27 macintosh 28 disabling pppoe and pptp client software 28 disabling web proxy 29 4 r unning the s etup w izard accessing the wizard 31 welcome 33 password 34 time zone 35 wan settings 36 lan settings 41 dhcp 41 wireless settings 42 summary 44 5 r outer c onfiguration navigating th...

  • Page 5

    Firewall 66 virtual servers 66 special applications 68 dmz 69 spi 70 pc privileges 71 schedule rules 72 content filter 73 url filter 74 system tools 76 restart 77 time zone 78 configuration 79 upgrade 80 advanced 81 static route 81 rip 81 ddns 82 quality of service 84 proxy arp 84 ipsec 85 port mapp...

  • Page 6: Ip A

    Support 98 feedback 99 6 t roubleshooting basic connection checks 101 browsing to the router configuration screens 101 connecting to the internet 102 forgotten password and reset to factory defaults 102 wireless networking 103 power led or power adapter ok led not lit 105 replacement power adapters ...

  • Page 7

    Cable specifications 119 d s afety i nformation important safety information 121 wichtige sicherheitshinweise 122 consignes importantes de sécurité 123 e e nd u ser s oftware l icense a greement g lossary i ndex r egulatory n otices regulatory information 137 caution: exposure to radio frequency rad...

  • Page 9: Bout

    A bout t his g uide this guide describes how to install and configure the officeconnect adsl wireless 108mbps 11g firewall router (3crwdr200a-75 and 3crwdr200b-75). This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic w...

  • Page 10

    10 c hapter : a bout t his g uide related documentation in addition to this guide, each router document set includes one installation guide. This guide contains the instructions you need to install and configure your router. Caution information that alerts you to potential loss of data or potential ...

  • Page 11: Ntroducing

    1 i ntroducing 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 recently, only large businesses could afford the ne...

  • Page 12

    12 c hapter 1: i ntroducing the r outer figure 1 example network without a firewall router when you use the firewall router in your network ( 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 nu...

  • Page 13

    Firewall router advantages 13 firewall router advantages the advantages of the firewall adsl wireless 108mbps 11g firewall router include: ■ shared internet connection for both wired and wireless computers ■ high speed 802.11g wireless networking ■ no need for a dedicated, “always on” computer servi...

  • Page 14

    14 c hapter 1: i ntroducing the r outer ■ one warranty flyer if any of these items are missing or damaged, please contact your retailer. Minimum system and component requirements your router requires that the computer(s) and components in your network be configured with at least the following: ■ a c...

  • Page 15

    Front panel 15 ■ the router has just been started up and is running a self-test routine, or ■ the administrator has invoked the reset to factory defaults command, or ■ the system software is in the process of being upgraded in each of these cases, wait until the router has completed the current oper...

  • Page 16

    16 c hapter 1: i ntroducing the r outer the led lights up and stays on when the connection between adsl service and the router is ok. If the led is off, nothing is connected or there is a problem (refer to chapter 6 “troubleshooting” ). 6 data dsl status led if the led is flashing, the link is ok an...

  • Page 17

    Rear panel 17 only use the power adapter supplied with this router. Do not use any other adapter. 10 power adapter ok led green indicates that the power adapter is supplying power to the router. If the led is off, there may be a problem with the power adapter or adapter cable. 11 reset button press ...

  • Page 18

    18 c hapter 1: i ntroducing the r outer.

  • Page 19: Ardware

    2 h ardware i nstallation introduction this chapter will guide you through a basic installation of the router, including: ■ connecting the router to the internet. ■ connecting the router to your network. ■ setting up your computers for networking with the router. Safety information warning: please r...

  • Page 20

    20 c hapter 2: h ardware i nstallation when positioning your router, ensure: ■ it is out of direct sunlight and away from sources of heat. ■ cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. ■ water...

  • Page 21

    Before you install your router 21 when making connections, be careful not to push the unit up and off the wall. Caution: only wall mount single units, do not wall mount stacked units. Before you install your router before you install and configure your router, you need the following additional infor...

  • Page 22

    22 c hapter 2: h ardware i nstallation if your isp allocates ip information dynamically over a protocol other than pppoe, you do not need any further information. This configuration is typical of cable connections. Powering up the router to power up the router: 1 plug the power adapter into the powe...

  • Page 23

    Connecting the router 23 you have now completed the hardware installation of your router. Next you need to set up your computers so that they can make use of the router to communicate with the internet. 3com recommends that you perform the initial router configuration from a computer that is directl...

  • Page 24

    24 c hapter 2: h ardware i nstallation.

  • Page 25: Etting

    3 s etting u p y our c omputers the router has the ability to dynamically allocate network addresses to the computers on your network, using dhcp. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the i...

  • Page 26

    26 c hapter 3: s etting u p y our c omputers figure 6 local area properties screen 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 screen 7 rest...

  • Page 27

    Obtaining an ip address automatically 27 windows vista if you are using a windows vista computer, use the following procedure to change your tcp/ip settings: 1 from the windows start menu, select network. 2 select network center option from the top menu. 3 select manage networks from the left panel....

  • Page 28

    28 c hapter 3: s etting u p y our c omputers macintosh if you are using a macintosh computer, use the following procedure to change your tcp/ip settings: 1 from the desktop, select apple menu, control panels, and tcp/ip. 2 in the tcp/ip control panel, set connect via: to “ethernet”. 3 in the tcp/ip ...

  • Page 29

    Disabling web proxy 29 disabling web proxy ensure that you do not have a web proxy enabled on your computer. Go to the control panel and click on internet options. Select the connections tab and click lan settings at the bottom. Make sure that the use proxy server option is unchecked..

  • Page 30

    30 c hapter 3: s etting u p y our c omputers.

  • Page 31: Unning

    4 r unning the s etup w izard 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). To use the setup wizard: 1 ensure that you have at least...

  • Page 32

    32 c hapter 4: r unning the s etup w izard figure 10 router login screen 5 if the password is correct, the country selection screen will appear. Select the country you wish to configure the router for, then click apply. If you purchased your router in the united states, you do not see this screen, a...

  • Page 33

    Accessing the wizard 33 6 when you have selected a country either: ■ the welcome screen will appear ( figure 12 ). Select the wizard tab and click wizard. Or ■ if your router has not been configured before, the wizard will launch automatically (refer to figure 13 ). 7 click next. 8 you will be guide...

  • Page 34

    34 c hapter 4: r unning the s etup w izard figure 13 wizard screen password figure 14 change administration password screen when the change administration password screen appears, type the old password, then a new password in both the new password and confirm password boxes..

  • Page 35

    Accessing the wizard 35 3com recommends entering a new password when setting up the router for the first time. The router is shipped from the factory with a default password, admin. 1. Password is case sensitive. 2. Write the new password down and keep it in a safe place, so that you can change your...

  • Page 36

    36 c hapter 4: r unning the s etup w izard wan settings figure 16 internet settings screen this internet addressing mode window allows you to set up the router for the type of internet connection you have. Before setting up your internet connection mode, have the account information from your isp re...

  • Page 37

    Accessing the wizard 37 pppoe mode figure 17 pppoe screen to setup the router for use with a ppp over ethernet (pppoe) connection, use the following procedure: 1 enter your ppp user name in the pppoe user name text box. 2 enter your ppp password in the pppoe password text box. 3 enter your ppp over ...

  • Page 38

    38 c hapter 4: r unning the s etup w izard pppoa mode figure 18 the pppoa screen to setup the router for use with a pppoa connection: 1 enter your ppp over atm user name in the ppp user name text box. 2 enter your ppp over atm password in the ppp password text box. 3 select dial on demand if you wan...

  • Page 39

    Accessing the wizard 39 dynamic/fixed ip in 1483 bridge mode figure 19 the dynamic/fixed ip in bridge mode to setup the router for use with a dynamic/fixed ip in 1483 bridge mode connection, use the following procedure: 1 manual ip address configuration: you may enter the router’s wan ip address and...

  • Page 40

    40 c hapter 4: r unning the s etup w izard ip over atm mode(ipoa) figure 20 the ip over atm screen to set up the router for use with an ipoa mode, use the following procedure: 1 wan ip address: enter the ip address given by your isp. 2 wan subnet mask: enter the subnet mask given by your isp. 3 manu...

  • Page 41

    Accessing the wizard 41 bridging mode figure 21 bridging mode screen with bridging the router simply acts like a modem. The router passes traffic through to another device, usually a computer or a router, which handles authentication with the isp. Lan settings figure 22 lan ip address screen this sc...

  • Page 42

    42 c hapter 4: r unning the s etup w izard figure 23 dhcp server setup screen to activate the dhcp server option, select enable the dhcp server with the following settings: and specify the ip pool range. The largest available continuous ip pool will be automatically entered; if this is not appropria...

  • Page 43

    Accessing the wizard 43 the router to automatically select an available channel when first powered on. The service area name default for 3com products is “3com”. Up to 32 (case sensitive) characters can be entered for the service area name. 3com strongly recommends that you change the ssid to someth...

  • Page 44

    44 c hapter 4: r unning the s etup w izard summary figure 25 configuration summary screen when you complete the setup wizard, a configuration summary will display. 3com recommends that you verify the configuration information of the router and then print this page for your records. Click finish and ...

  • Page 45: Outer

    5 r outer c onfiguration navigating through the router configuration pages this chapter describes all the screens available through the router configuration pages, and is provided as a reference. To get to the configuration pages, browse to the router by entering the url in the location bar of your ...

  • Page 46

    46 c hapter 5: r outer c onfiguration ■ advanced — allows you to monitor and configure the router’s advanced features, including static route, rip, ddns, ipsec, proxy arp, port mapping and qos(quality of service). ■ management — displays the current status and activity logs of the router, snmp enabl...

  • Page 47

    Welcome screen 47 the notice board is used to display firmware version and configuration warning messages. For example, you would be warned if you had disabled wireless networking or wireless encryption. Password figure 27 password screen changing the administration password you can change the passw...

  • Page 48

    48 c hapter 5: r outer c onfiguration wizard figure 28 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 29 unit configuration scr...

  • Page 49

    Lan settings 49 this screen allows you to change the ip address and subnet mask. 1 ip address: enter the ip address for the router. 2 subnet mask: enter the subnet mask for the router. 3 enable dhcp server on the lan: check this box to enable the dhcp service on the router(enabled by default). The f...

  • Page 50

    50 c hapter 5: r outer c onfiguration static dhcp assignment figure 30 static dhcp assignment screen to assign a lan client with a static ip address, please do the following: 1 enter the ip address that you would like to lease and the client mac address in the fields appropriately. The mac address m...

  • Page 51

    Wireless settings 51 dhcp lease table figure 31 dhcp lease table screen the dhcp lease table screen list the client’s name, mac address, ip address and expiration time which reflects the value specified in dhcp server setting in “unit configuration” on this chapter. Wireless settings the wireless se...

  • Page 52

    52 c hapter 5: r outer c onfiguration configuration figure 32 configuration screen enable wireless networking use this check box to enable or disable the wireless section of your lan. When disabled, no wireless pcs can gain access to either the internet or other pcs on your wired or wireless lan thr...

  • Page 53

    Wireless settings 53 choose the auto option to automatically choose the clearest channel. The router will check for the clearest channel whenever it is rebooted, powered up, and when the clear channel select option is first applied. Valid channels are country dependent. See “regulatory notices” on p...

  • Page 54

    54 c hapter 5: r outer c onfiguration profile support for nics you may save your wireless settings here by clicking save profile. Please choose save to disk option when a dialog box opens. Thus, you may save your wireless settings to an external file and later on use this file to import the settings...

  • Page 55

    Wireless settings 55 wep to enable wep, select wep from the encryption type. Figure 33 encryption — wep 1 please choose from 64 bits or 128 bits for the encryption strength. 2 enter the passphrase which can be up to 31 characters long and may contain any alphanumeric characters in the field. 3 click...

  • Page 56

    56 c hapter 5: r outer c onfiguration click save to save the setting. Wpa to enable wpa, select wpa-psk or wpa2-psk from the encryption type. Figure 34 encryption — wpa 1 select either tkip or aes as the encryptionmethod. 2 enter a passphrase between 8 to 63 characters long for the pre-shared key. 3...

  • Page 57

    Wireless settings 57 figure 35 encryption — wap/wpa2 with radius 1 select encryption method from the drop-down box. 2 enter the frequency for group rekey interval in seconds.. 3 enter the radius server ip address. 4 enter the radius port number. 5 enter your radius key here. Click save to save the s...

  • Page 58

    58 c hapter 5: r outer c onfiguration figure 36 wmm screen typically, voice and video traffic types are delay-sensitive, but are tolerant of some frame losses.On the other hand, data traffic type is delay-tolerable, but requires loss-free transmission. So you may adjust theses parameters with regard...

  • Page 59

    Wireless settings 59 priority, and hence the more capacity share for a given traffic condition.However, the probability of collisions increases when operating with smaller cwmin. These parameters can be used in order to differentiate the channel access among different priority traffic. Edca sta para...

  • Page 60

    60 c hapter 5: r outer c onfiguration figure 37 connection control screen to specify that only certain wireless computers can connect to the router, select allow/deny, and then enter the mac addresses of the wireless clients. You may enter a maximum of 64 pcs in the list. Click save to save your exi...

  • Page 61

    Wireless settings 61 client list figure 38 client list screen the wireless client list provides details on the devices that are connected to the wireless lan. The list is only created when wireless networking is enabled. For each device that is connected to the wireless lan, the mac address and conn...

  • Page 62

    62 c hapter 5: r outer c onfiguration figure 39 advanced wireless settings screen authentication type the default is set to auto (default), allows either open system or shared key authentication to be used. With open system authentication, the sender and the recipient do not use a wep key for authen...

  • Page 63

    Wireless settings 63 auto-fallback feature. Auto-fallback will negotiate the best possible connection speed between the router and a wireless client. The default value is auto (default). Transmission power (transmit power control) the greater the transmission power used, the larger the area a wirele...

  • Page 64

    64 c hapter 5: r outer c onfiguration fragmentation threshold this value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the fragmentation threshold. Setting the fragmentation threshold too...

  • Page 65

    Internet settings 65 figure 40 wds screen to setup a wds, make sure that the following conditions are met for all of the linked aps: 1 both ap's wds should be enabled. 2 aps are configured with the same channel, ssid and encryptions. 3 each ap should have a different ip address. Internet settings be...

  • Page 66

    66 c hapter 5: r outer c onfiguration 2 pppoe ppp over ethernet, provides routing for multiple pcs, this mode is often used for the dsl connection. To configure this function correctly, you should obtain the information from your isp. 3 dynamic/fixed ip in 1483 bridge mode in this mode of connection...

  • Page 67

    Firewall 67 figure 41 virtual servers screen 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 configured as an ftp server, allowing others outside of your office ...

  • Page 68

    68 c hapter 5: r outer c onfiguration special applications figure 42 special applications screen some software applications require special or multiple connections to the internet and these would normally be blocked by the firewall. For example internet telephony or video conferences require multipl...

  • Page 69

    Firewall 69 5 click apply to save the configuration and apply the changes. The router will automatically allow ftp and netmeeting sessions. You do not need to configure these as special applications. Only one computer on your network can use the special application at any one time. Dmz figure 43 dmz...

  • Page 70

    70 c hapter 5: r outer c onfiguration address and the corresponding lan ip address in the fields and click add to add the entry. Click apply/reboot to apply your settings. Spi stateful packet inspection (spi) inspects, and if required blocks packets at the application layer. Spi also maintains tcp a...

  • Page 71

    Firewall 71 email alert:: use this feature if you want the router to send you an email if a dos attack has attempted. Connection policy: these settings determine the timeouts between the router’s recognizing and blocking dos attempts before allowing legitimate traffic using these protocols to be per...

  • Page 72

    72 c hapter 5: r outer c onfiguration to use access control for the computers: 1 enter the pc’s description and the range of the ip addresses. 2 select to bypass the url or content filter if you would like the clients to bypass the rules.(please refer to the url or content filter tab) 3 please selec...

  • Page 73

    Firewall 73 figure 46 the schedule rules screen 1 click add rule at the schedule rules screen. 2 enter the schedule name and give a brief description. 3 check the appropriate check box for each day you want to block access, and enter the times for each day in 24-hour clock format. Content filter you...

  • Page 74

    74 c hapter 5: r outer c onfiguration to activate content filtering: 1 select firewall from the main menu, then select the content filter tab. The content filter screen displays. Figure 47 content filter screen 2 make sure the enable content filter check box is checked. 3 select the content filter s...

  • Page 75

    Firewall 75 figure 48 the url filter screen to enable the url filtering, please do the following: 1 check the enable url filtering function box to enable the url filtering. 2 enter the url or key words of the url in the text field for your desired website. To filter a specific site, enter the url fo...

  • Page 76

    76 c hapter 5: r outer c onfiguration to filter a generic keyword enter it into one of the fields. You should exercise caution when choosing a keyword as many keywords are contained within other words. For example, filtering the word sex would filter the following example urls: ■ www.Sussex.Com ■ ww...

  • Page 77

    System tools 77 restart figure 49 restart screen if your router is not operating correctly, you can choose to restart the router by selecting restart the router, simulating the effect of power cycling the unit. No configuration information will be lost but the log files will be erased. This function...

  • Page 78

    78 c hapter 5: r outer c onfiguration time zone figure 50 time zone screen choose the time zone that is closest to your actual location. The time zone setting is used by the system clock when displaying the correct time in the log files. If you use daylight saving tick the enable day light savings b...

  • Page 79

    System tools 79 configuration figure 51 configuration screen select the configuration tab to display the configuration screen. Backup configuration click backup to save the current router configuration. You will be prompted to download and save a file to disk. Restore configuration data if you want ...

  • Page 80

    80 c hapter 5: r outer c onfiguration upgrade figure 52 upgrade screen the upgrade facility allows you to install on the router any new releases of system software that 3com may make available. To install new software, you first need to download the software from the 3com support web site to a folde...

  • Page 81

    Advanced 81 advanced selecting advanced from the main menu displays the following seven tabs in your web browser window: static route, rip, ddns, quality of service, proxyarp, port mapping, and ipsec. Static route the router supports static route functionality. Select the static route tab to display...

  • Page 82

    82 c hapter 5: r outer c onfiguration that routing information replicated to all rip enabled devices on the network. Lan and wan interfaces can be configured independently of each other. Select the rip tab to display the screen. Figure 54 rip screen setting up rip check the enable rip mode check box...

  • Page 83

    Advanced 83 to set up ddns: 1 select advanced from the main menu, then select the ddns tab. The ddns screen displays. Figure 55 ddns screen 2 select a ddns service providerfrom the drop-down list. This can be tzo.Com, dyndns.Org, dtdns, noip or zoneedit.Com. Tzo.Com if you select tzo.Com: 1 in the d...

  • Page 84

    84 c hapter 5: r outer c onfiguration 3 in the password text box, enter the account password. 4 click add to add your ddns. Noip.Com 1 in the host name text box, enter the host name. 2 in the e-mail text box, enter the account name. 3 in the password text box, enter the account password. 4 click sav...

  • Page 85

    Advanced 85 decrease bandwidth consumption on slow-speed wan links and allows a site to use a single ip address for two physical networks. To use proxy arp, you must have a range of static ip addresses assigned by your isp. Figure 57 the proxy arp screen to configure proxy arp: 1 on the menu, click ...

  • Page 86

    86 c hapter 5: r outer c onfiguration figure 58 the ipsec screen below is a description of the basic configuration parameters: ipsec connection name: please enter a name to define your connection. Remote ipsec gateway address: this is the static wan ip address or url of the remote ipsec router. Tunn...

  • Page 87

    Advanced 87 key exchange method: select ike or manual from the drop-down list box. Manual is useful for troubleshooting when you have problems using ike key management. Pre-shared key: type your pre-shared key in this field. Enter 8 to 31 case-sensitive ascii characters. Both routers which would bui...

  • Page 88

    88 c hapter 5: r outer c onfiguration do not alter any settings unless you are an experienced network administrator. Management the management screen lets you administer your routers with features such as system log, snmp, upnp, trust station, remote management, and utility. Syslog if you have a sys...

  • Page 89

    Management 89 figure 60 the system log screen to view the current logs: 1 click the view log button. To enable the system log: 1 check enable system log box. 2 select the drop-down menu for a list of available types of logging activities. 3 select the display level for a list of available types of l...

  • Page 90

    90 c hapter 5: r outer c onfiguration figure 61 the snmp screen click enable/disable to enable/disable the agent. To configure the snmp: 1 type the read community, which is the password for the incoming get and getnext requests from the management station. 2 type the set community, which is the pass...

  • Page 91

    Management 91 figure 62 the upnp screen check upnp enabled to activate upnp. Trusted station figure 63 the trusted station screen the trusted station screen lets you add/remove the mac address of the stations which can access the web administration..

  • Page 92

    92 c hapter 5: r outer c onfiguration remote management it is possible to administer the router remotely. Select one of the following options for remote administration: figure 64 the remote management screen ■ disable remote administration — this option is set as default. ■ enable administration fro...

  • Page 93

    Diagnostics 93 figure 65 the utility screen to use the utility: 1 select commands that you would like to run from the menu. 2 enter the ip address or domain name in the field provided. 3 click start to start executing the command. 4 the results will be shown on the screen below. Diagnostics the diag...

  • Page 94

    94 c hapter 5: r outer c onfiguration figure 66 the diagnostics screen device info the device info settings menu provides the following options:.

  • Page 95

    Device info 95 summary figure 67 the summary screen the summary screen is used to display the information of your lan status. Wan figure 68 the wan screen the wan status screen is used to display the information of your dsl connection status..

  • Page 96

    96 c hapter 5: r outer c onfiguration statistics figure 69 the statistics screen the statistics screen is used to display the information of your lan/wan/atm/adsl connection statistics. Click on the button for each connection device for more detailed information..

  • Page 97

    Device info 97 route figure 70 the route screen the route screen is used to display the routing status/information. Arp figure 71 the arp screen the arp screen is used to display the arp status..

  • Page 98

    98 c hapter 5: r outer c onfiguration support/feedback selecting support/feedback from the main menu displays the status, logs, routing table, and syslog screens in your web browser window. Support/feedback selecting support/feedback from the main menu displays the support and feedback screens. Supp...

  • Page 99

    Support/feedback 99 feedback figure 73 feedback screen 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..

  • Page 100

    100 c hapter 5: r outer c onfiguration.

  • Page 101: Roubleshooting

    6 t roubleshooting basic connection checks ■ check that the router is connected to your computers, and that all the equipment is powered on. Check that the lan status and sync dsl status leds on the router are illuminated, and that any corresponding leds on nic are also illuminated. ■ ensure that th...

  • Page 102

    102 c hapter 6: t roubleshooting ■ if you cannot browse to the router, use the winipcfg utility in windows xp to verify that your computer has received the correct address information from the router. From the start menu, choose run and then enter cmd . Check that the computer has an ip address of t...

  • Page 103

    Wireless networking 103 router connection to the internet. Also, other computer users will lose their network connections whilst this process is taking place, so choose a time when this would be convenient. Here is how you may use the reset button: 1 use the tip of a pen. 2 press and hold the reset ...

  • Page 104

    104 c hapter 6: t roubleshooting ■ ensure that the encryption method and level that you use on your clients are the same as those configured on the router. ■ ensure that you have the wireless computer enabled in the list of allowed mac addresses if you are using wireless connection control on the ro...

  • Page 105

    Power led or power adapter ok led not lit 105 around it. Applications are generally available with the computer wireless card to carry out a site survey. Use this application to find the optimal siting for your wireless computer. Consult your computer card documentation and vendor for more details. ...

  • Page 106

    106 c hapter 6: t roubleshooting alert led the alert led will flash when the router unit is first powered up while the system software checks the hardware for proper operation. Once the router has started normal operation, the alert led will go out. ■ if the alert led does not go out following start...

  • Page 107

    Frequently asked questions 107 ■ ip address: 192.168.1.2 ■ subnet mask: 255.255.255.0 ■ default router address: 192.168.1.1 3 restart the computer, and re-apply power to the router. 4 using the web browser on the computer, enter the following url in the location bar: http://192.168.1.1 . This will c...

  • Page 108

    108 c hapter 6: t roubleshooting you can expand the number of connections available on your lan by using hubs, switches and wireless access points connected to the router. 3com wireless access points and officeconnect hubs and switches provide a simple, reliable means of expanding your network; cont...

  • Page 109

    3com warranty and support services 109 warranty support: ■ requestor contact details ■ 3c part number ■ firmware or software version of the 3com product and operating system used ■ description of the problem or failure ■ serial number of the product ■ ship-to address, with on-site contact (required ...

  • Page 110

    110 c hapter 6: t roubleshooting.

  • Page 111: Sing

    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/ xp) 1 insert the router cd-rom in the cd-rom drive on your computer. A menu will appear; select router discovery....

  • Page 112

    112 a ppendix a: u sing d iscovery figure 75 discovered router screen 3 figure 76 shows an example discovered devices screen. Highlight the router by clicking on it, and press next. Figure 76 discovery finish screen 4 click on finish to launch a web browser and display the login page for the router..

  • Page 113: Ip A

    B ip a ddressing the internet protocol suite the internet protocol suite consists of a well-defined set of communications protocols and several standard application protocols. Transmission control protocol/internet protocol (tcp/ip) is probably the most widely known and is a combination of two of th...

  • Page 114

    114 a ppendix b: ip a ddressing 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....

  • Page 115

    How does a device obtain an ip address and subnet mask? 115 see table 4 for an example about how a network (only four computers represented) and a router might be configured. Table 4 ip addressing and subnet masking how does a device obtain an ip address and subnet mask? There are three different wa...

  • Page 116

    116 a ppendix b: ip a ddressing themselves the same address, the conflict is detected and one of the devices allocates itself a new address. Automatic ip addressing support was introduced by microsoft in the windows 98 operating system and is also supported in windows 2000..

  • Page 117: Echnical

    C t echnical s pecifications this section lists the technical specifications for the officeconnect adsl wireless 108mbps 11g firewall router. Adsl wireless 11g 108mbps firewall router interfaces adsl modem connection — modem rj-11 port lan connection — four 10mbps/100mbps dual speed ethernet ports (...

  • Page 118

    118 a ppendix c: t echnical s pecifications encryption: 40/64 bit wep, 128 bit wep, wpa maximum clients: 128 o/p power 18dbm operating temperature 0 °c to 40 °c (32 °f to 105 °f) power 7va, 23.9 bthu/hr humidity 0% to 90% (non-condensing) humidity dimensions ■ width = 220 mm (8.7 in.) ■ depth = 135 ...

  • Page 119

    Adsl wireless 11g 108mbps firewall router 119 systems. Rss-210 environmental: en 60068 (iec 68) *see “regulatory information” on page 137 for conditions of operation. System requirements operating systems the router will support the following operating systems: ■ windows 95/98 ■ windows nt 4.0 ■ win...

  • Page 120

    120 a ppendix c: t echnical s pecifications.

  • Page 121: Afety

    D s afety i nformation important safety information warning: warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: warning: the router generates and u...

  • Page 122

    122 a ppendix d: s afety i nformation warning: 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 sockets. Only connect rj-45 data connectors to these sockets. Wichtige sicherheitshinweise vorsicht: warnh...

  • Page 123

    Consignes importantes de sécurité 123 behoben werden kann, setzen sie sich mit ihrem lieferanten in verbindung. Vorsicht: vor dem ausbau des geräts das netzadapterkabel herausziehen. Vorsicht: rj-45-anschlüsse. Dies sind abgeschirmte rj-45-datenbuchsen. Sie können nicht als telefonanschlußbuchsen ve...

  • Page 124

    124 a ppendix d: s afety i nformation ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. Avertissement: il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à l’intérieur du moyeu. Si vous avez un problème phy...

  • Page 125: Ser

    E e nd u ser s oftware l icense a greement important: read before installing the software 3com end user software 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 (ì3c...

  • Page 126

    126 a ppendix e: e nd u ser s oftware l icense a greement commercial item as defined in far 2.101(a) and as such is provided with only such rights as are provided in this agreement, which is 3com’s standard commercial license for the software. Technical data is provided with limited rights only as p...

  • Page 127: Lossary

    G lossary 802.11b the ieee specification for wireless ethernet which allows speeds of up to 11 mbps. The standard 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 s...

  • Page 128

    128 c hapter : g lossary configure to use the best common speed. The order of preference (best first) is: 100base-tx full duplex, 100base-tx half duplex, 10base-t full duplex, and 10base-t half duplex. Auto-negotiation is defined in the ieee 802.3 standard for ethernet and is an operation that takes...

  • Page 129

    129 95 and windows 98 will call the server to obtain the address. Windows 98 will allocate itself an address if no dhcp server can be found. Dns server address dns stands for domain name system, which allows internet host computers to have a domain name (such as 3com.Com) and one or more ip addresse...

  • Page 130

    130 c hapter : 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 internet. Half duplex a system that allows packets to transmitted and received, but not at the same time. Contra...

  • Page 131

    131 isp internet service provider. An isp is a business that provides connectivity to the internet for individuals and other 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...

  • Page 132

    132 c hapter : g lossary pppoe point-to-point protocol over ethernet. Point-to-point protocol is a method of data transmission originally created for dial-up connections; pppoe is for ethernet connections. Pptp point-to-point tunneling protocol is a method of secure data transmission between two rem...

  • Page 133

    133 (as opposed to valid ip address numbers recognized by the internet, which must assigned by internic). Subnets a network that is a component of a larger network. Switch a device that interconnects several lans to form a single logical lan that comprises of several lan segments. Switches are simil...

  • Page 134

    134 c hapter : g lossary weca wireless ethernet compatibility alliance. An industry group formed to certify cross vendor interoperability and compatibility of 802.11b and 802.11g wireless networking products and to promote the standard for enterprise, small business and home environments. (see also ...

  • Page 135: Ndex

    I ndex 135 i ndex a addresses ip 113 administration password 34, 47 advanced 81 ddns 82 rip 81 static route 81 automatic addressing 115 c cable specifications 119 channels 137 configuration backup 79 restore 79 conventions notice icons, about this guide 9 text, about this guide 10 country selection ...

  • Page 136

    136 i ndex static route 81 subnet mask 41, 113 summary 44 support information 98 support links 98 t tcp/ip 25, 28, 41, 113 technical specifications 117 standards 117 technical support 108 time zone 35, 78 u unit configuration 48 upgrade 80 url filter 74 v virtual servers 66, 67 w wan 36 web proxy 29...

  • Page 137: Egulatory

    R egulatory n otices regulatory information 3com officeconnect adsl wireless 108mbps 11g firewall router (wl-553) must be installed and used in strict accordance with the manufacturer’s instructions as described in the user documentation that comes with the product. This product contains encryption....

  • Page 138

    138 c hapter : r egulatory n otices limitation of exposure of the general public to electromagnetic fields (0 hz to 300 ghz)]. Us - radio frequency requirements this device must not be co-located or operated in conjunction with any other antenna or transmitter. Usa-federal communications commission ...

  • Page 139

    Manufacturer’s declaration of conformity 139 the correction of interference caused by such unauthorized modification, substitution or attachment will be the responsibility of the user. Manufacturer’s declaration of conformity 3com corporation 350 campus drive marlborough, ma 01752-3064, usa (800) 52...

  • Page 140

    140 c hapter : r egulatory n otices dispositif doit étre prêt à accepter tout brouillage radioélectrique reçu, même si ce brouillage est susceptible de compromettre le fonctionnement du dispositif. The term "ic" before the equipment certification number only signifies that the industry canada techni...

  • Page 141

    141 e urope – eu d eclaration of c onformity intended use: ieee 802.11g/b radio lan device note: to ensure product operation is in compliance with local regulations, select the country in which the product is installed. Refer to 3com officeconnect wireless 54mbps/108mbps 11g cable/dsl router user gu...

  • Page 142

    142 italian con la presente 3com corporation dichiara che questo rlan device è conforme ai requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/ce. Spanish por medio de la presente 3com corporation declara que el rlan device cumple con los requisitos esenciales...

  • Page 144

    3com corporation, corporate headquarters, 350 campus drive, marlborough, ma usa 01752-3064. To learn more about 3com products and services, visit our world wide web site at www.3com.Com all specifications are subject to change without notice. Copyright © 2008 3com corporation. All rights reserved. 3...