Arcadyan Technology AR4505NW Users Manual

Advanced 89

Before you set up DDNS, you must obtain an account, password or key
and static domain name from your DDNS provider.

DDNS is disabled by default.

Figure 74 Dynamic Domain Server (DDNS) Screen

1 Check Enable DDNS.
2 Select the provider, and then enter the necessary information provided by

your DDNS provider.

3 Click Apply.

90 CHAPTER 5: CONFIGURING THE ROUTER

SNMP SNMP (Simple Network Management Protocol) allows remote

management of your router by a PC that has an SNMP management
agent installed.

Figure 75 SNMP Screen

To Configure SNMP Community:

1 In the Community column, enter the name of the SNMP communication

channel. Your SNMP management agent needs to be configured with this
name so that it can communicate with your router.

2 In the Access column, select Read to allow the management agent to

collect data (for example, bandwidth usage) from your router. Select
Write to allow the management agent to change the configuration of
your router.

3 Check the appropriate Valid checkbox to enable the communication

channel.

Advanced 91

You can configure your router to send status messages to the SNMP
management agent if a problem occurs on the network. To configure
SNMP traps:

1 In the IP Address field, enter the IP address of the PC to which you want

your router to send status messages.

2 In the Community field, enter the name of the SNMP communication

channel to which you want your router to send status messages.

3 Set the Version field to match the version of trap messaging that your

SNMP management agent supports. The router supports V1 and V2c trap
messaging.

Syslog Using third party syslog software, this Syslog Server tool will automatically

download the Router log to the specified server IP address.

Figure 76 Syslog Server Screen

1 Check the Enable Syslog Server checkbox.
2 Enter the Server LAN IP Address in the space provided.
3 Click Apply.

92 CHAPTER 5: CONFIGURING THE ROUTER

Proxy ARP Proxy ARP is the technique in which one host, usually a router, answers

ARP requests intended for another machine. By "faking" its identity, the
router accepts responsibility for routing packets to the "real" or intended
destination. This hightens the security for your network.

Figure 77 Proxy ARP Screen

Enter the corresponding IP address in the IP Address From and IP Address

To fields.

System Tools 93

System Tools These pages allows you to manage different parameters of the Router

and perform certain administrative functions.

Restart Router Sometimes it may be necessary to restart (or reboot) the Router.

Restarting the Router from this screen will not delete any of your
configuration settings.

Click the Restart the Router button to restart the Router.

Figure 78 Restart Router Screen

Configuration Use this configuration screen to backup, restore or reset the

configuration details of the Router.

Figure 79 Configuration Screen

94 CHAPTER 5: CONFIGURING THE ROUTER

■ Backup Configuration — You can save your current configuration by

clicking the Backup button. Saving your configuration will allow you
to restore it later if your settings are lost or changed. It is
recommended that you backup your current configuration before
performing a firmware update.

■ Restore Configuration Data — The Restore Settings option will allow

you to restore a previously saved configuration. Please select the
configuration file using the Browse button and click Restore.

■ Reset to Factory Default — Using this option will reset all of the

settings in the Router to the factory default settings. It is
recommended that you backup your settings before you restore all of
the defaults. To restore the factory default settings, click Reset.

Upgrade From time to time 3Com may release new versions of the Router’s

firmware. Firmware updates contain improvements and fixes to problems
that may have existed.

Figure 80 Upgrade Screen

Please download the firmware file to your PC first, and then click Browse
and select the firmware file. Click Upgrade to upload the firmware to the
Router.

System Tools 95

Time Zone You can set the time settings for the Router in this page.

Figure 81 Time Zone Screen

The Router keeps time by connecting to a Network Time Protocol (NTP)
server. This allows the Router to synchronize the system clock to the
Internet. The synchronized clock in the Router is used to record the
security log and control client filtering. Select the time zone that you
reside in. If you reside in an area that observes Daylight Saving, then
check the checkbox for Enable Daylight Saving. The system clock may not
update immediately. Allow at least 15 minutes for the router to contact
the time servers on the Internet and get a response. You cannot set the
clock yourself.

You can specify which NTP servers the Router will use to update the
system clock, although doing this should only be necessary if you are
experiencing difficulty.

96 CHAPTER 5: CONFIGURING THE ROUTER

Ping The ping tool is used to test if the network is working properly.

Figure 82 Ping Screen

1 Enter the IP address or domain name in the IP Address or Domain Name

field, and click Ping.

2 Select from the Number of times to Ping drop-down menu.
3 The Router keeps a log of the ping test, click Clear Log to delete the

records.

System Tools 97

Traceroute Traceroute is the program that shows you the route over the network

between two systems, listing all the intermediate routers a connection
must pass through to get to its destination. It can help you determine
why your connections to a given server might be poor, and can often help
you figure out where exactly the problem is. It also shows you how
systems are connected to each other, letting you see how your ISP
connects to the Internet as well as how the target system is connected.

Figure 83 Traceroute Screen

1 Enter the IP address or domain name in the IP Address or Domain Name

field, and click Tra ce ro ut e.

2 The Router keeps a log of the trace route test, click Clear Log to delete

the records.

98 CHAPTER 5: CONFIGURING THE ROUTER

DNS Lookup DNS Lookup is the process of resolving an IP address

(i.e. 192.168.11.137) to a host name (i.e. xxxcompany.net).

Figure 84 DNS Lookup Screen

1 Enter the IP address or domain name in the IP Address or Domain Name

field, and click Dns lookup.

2 The Router keeps a log of the DNS lookup test, click Clear Log to delete

the records.

Status and Logs 99

Status and Logs You can use the Status Screen to view version numbers for your Router’s

software and hardware and check the status of connections to WAN,
LAN and WLAN interfaces.

Status

ADSL Status

Figure 85 Status Screen

This screen shows Router status and statistics.

Figure 86 ADSL Status Screen

This screen shows ADSL modem status and statistics.

100 CHAPTER 5: CONFIGURING THE ROUTER

ATM PVC Status Figure 87 ATM PVC Status Screen

This screen shows ATM PVC status and statistics.

■ Click Release to release the IP address from your ISP.

■ Click Renew to obtain the IP address from your ISP.

Routing Table This screen displays details for the default routing used by your Router

and any routing created using Static Routing or RIP.

Figure 88 Routing Table Screen

Status and Logs 101

Logs This screen shows any attempts that have been made to gain access to

your network as well as the system activities.

Figure 89 Logs Screen

■ Click Refresh to update the record.

■ Click Clear to clear the log (note that all current entries will be erased).

■ Click Save to save the log to the hard disk as a text file. When

prompted for a location to save the file to, specify a filename and
location, and then click OK.

102 CHAPTER 5: CONFIGURING THE ROUTER

Support/Feedback You can use the Support/Feedback screen to obtain support and help,

and also provide feedback to 3Com.

Support Figure 90 Support Screen

This screen shows support information.

Feedback To provide feedback to 3Com, please click Provide Feedback, and this will

connect you to 3Com Web site.

Figure 91 Feedback Screen

This screen shows feedback information.

6

TROUBLESHOOTING

Basic Connection
Checks

Browsing to the
Router
Configuration
Screens

■ Check that the Router is connected to your computers and to the

telephone line, and that all the equipment is powered on. Check that
the LAN Status and SYNC LEDs on the Router are illuminated, and that
any corresponding LEDs on the NIC are also illuminated.

■ Ensure that the computers have completed their start-up procedure

and are ready for use. Some network interfaces may not be correctly
initialized until the start-up procedure has completed.

■ If the link status LED does not illuminate for a port that is connected,

check that you do not have a faulty cable. Try a different cable.

If you have connected your Router and computers together but cannot
browse to the Router configuration screens, check the following:

■ Confirm that the physical connection between your computer and the

Router is OK, and that the LAN Status LEDs on the Router and
network adapter are illuminated and indicating the same speed
(10Mbps or 100Mbps). Some NICs do not have status LEDs, in which
case a diagnostic program may be available that can give you this
information.

■ Ensure that you have configured your computer as described in

Chapter 3

to ensure that your computer receives an IP address.

. Restart your computer while it is connected to the Router

■ When entering the address of the Router into your web browser,

ensure that you use the full URL including the http:// prefix (e.g.
http://192.168.1.1).

■ 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 on the LAN Settings button at the bottom.
Make sure that the Proxy Server option is unchecked.

104 CHAPTER 6: TROUBLESHOOTING

■ If you cannot browse to the Router, use the winipcfg utility in

Windows 98/ME to verify that your computer has received the correct
address information from the Router. From the Start menu, choose
Run and then enter winipcfg. Check that the computer has an IP
address of the form 192.168.1.xxx (where xxx is in the range 2-254),
the subnet mask is 255.255.255.0, and the default Router is

192.168.1.1 (the address of the Router). If these are not correct, use
the Release and Renew functions to obtain a new IP address from the
Router. Under Windows 2000 and Windows XP, use the ipconfig
command-line utility to perform the same functions.

Connecting to the
Internet

Forgotten Password
and Reset to
Factory Defaults

If you can browse to the Router configuration screens but cannot access
web sites on the Internet, check the following:

■ Confirm that the physical connection between the Router and the

telephone line is OK, and that the DSL LED on the Router is
illuminated.

■ Ensure that you have entered the correct information into the Router

configuration screens as required by your Internet Service Provider. Use
the Internet Settings screen to verify this.

■ Check that the PPPoE or PPPoA user name and password are correct.

■ Ensure that your computers are not configured to use a Web proxy.

On Windows computers, this can be found under Control Panel >
Internet Options > Connections.

If you can browse to the Router configuration screen but cannot log on
because you do not know or have forgotten the password, follow the
steps below to reset the Router to its factory default configuration.

CAUTION: All your configuration changes will be lost, and you will need
to run the configuration wizard again before you can re-establish your
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.

1 Power off the Router.
2 Disconnect all your computers and the telephone line from the Router.
3 Re-apply power to the Router, and wait for it to finish booting up.

Wireless Networking 105

4 Press and hold the Reset button on the rear panel (see “The rear panel

(Figure 4) of the Router contains four LAN ports, one ADSL port, a reset
button, a power switch, and a power adapter socket.” on page 15) for 5

seconds.

5 The Router will restart, and when the start-up sequence has completed,

browse to:

http://192.168.1.1

and run the configuration wizard. You may need to restart your computer
before you attempt this.

6 When the configuration wizard has completed, you may reconnect your

network as it was before.

Wireless
Networking

■ Ensure that you have an 802.11b or 802.11g wireless adapter for

each wireless computer, and that it is correctly installed and
configured. Verify that each Wireless computer has either Windows
98 or higher or MAC OS 8.5 or higher.

■ Verify that your wireless computers are configured to work in

Infrastructure mode and not Ad Hoc mode. The Router contains an
Access Point that is designed to operate in Infrastructure mode. Ad
Hoc mode is not supported by the Router.

■ If you have a wired and a wireless NIC in the same computer, ensure

that the wired NIC is disabled.

■ Check the status of the WLAN LED, it should be lit if wireless is

enabled and will flash when there is wireless activity. If not lit go to

Wireless Settings” on page 43 and enable wireless networking.

“

■ Ensure that the TCP/IP settings for all devices are correct.

■ Ensure that the Wireless Clients are using the same SSID or Service

Area Name as the Router. The SSID is case-sensitive

■ Ensure that the encryption method and level that you use on your

clients are the same as those configured on the Router. The Router
cannot simultaneously support WPA and WEP encryption.

■ Ensure that you have the Wireless computer enabled in the list of

allowed MAC addresses if you are using MAC Address Filtering on the
Router.

■ If you are having difficulty connecting or are operating at a low speed

try changing the antenna positions on the rear of the Router. For more