Buffalo WBMR-G125 Router Manual PDF (Setup & Configuration Guide)

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WBMR-G54 Wireless ADSL Router User Guide

To display the

DHCP Settings

window, click the

DHCP

button in the

Home

directory. Any active DHCP Clients

appear at the bottom of the window in the DHCP Clients List. The IP address and MAC address for active DHCP

clients are displayed in the list.

The two options for DHCP service are as follows:

±

You may use the Router as a DHCP server for your LAN.

±

You can disable DHCP service and manually configure IP settings for workstations.

You may also configure DNS settings for the LAN when using the Router in DHCP mode. In Auto

DNS Mode,

the

Router will automatically relay DNS settings to properly configured DHCP clients. To manually enter DNS IP

addresses, select the

Manual

DNS Mode option and type in a

Primary

and

Secondary DNS

IP Address in the field

provided. The manually configured DNS settings will be supplied to clients that are configured to request them from the

Router.

Follow the instructions below according to which of the above DHCP options you want to use. When you have

configured the DHCP Settings as you want them, click the

Apply

button to commit the new settings.

Use the Router for DHCP

To use the built-in DHCP server, click to select the

DHCP Server

option if it is not already selected. The IP Address

Pool settings can be adjusted. The

Starting IP Address

is the lowest available IP address (default = 192.168.11.2). If

you change the IP address of the Router this will change automatically to be 1 more that the IP address of the Router.

The

Ending IP Address

is the highest IP address number in the pool. Type in the

Lease Time

in the entry field

provided. This is the amount of time in seconds that a workstation is allowed to reserve an IP address in the pool if the

workstation is disconnected from the network or powered off.

Disable the DHCP Server

To disable DHCP, click to select the

No DHCP

option and click on the

Apply

button. Choosing this option requires

that workstations on the local network must be configured manually or use another DHCP server to obtain IP settings.

If you configure IP settings manually, make sure to use IP addresses in the subnet of the Router. You will need to use

the Router’s IP address as the Default Gateway for the workstation in order to provide Internet access.

DHCP Settings window with DHCP disabled

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WBMR-G54 Wireless ADSL Router User Guide

Note

To manually configure IP settings on

Windows workstations, open the

TCP/IP Properties menu and select

the “Use the following IP address”

option. You will need to supply the

IP addres, Subnet mask and Default

gateway (use IP address of WBMR-

G54) for each workstation. The

example here also uses manually

configured DNS settings.

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WBMR-G54 Wireless ADSL Router User Guide

Static IP on LAN

If the Router has the DHCP server enabled it is possible to permanently assign IP addresses to workstations specified by

their MAC address. Up to five IP addresses may be assigned to five different devices. This will take the chosen IP

address used out of the available addresses in the dynamic IP address pool and give a permanent lease time for the IP

address to the selected device.

To assign an IP address that will not age out, type in the

MAC Address

of the device and its static

IP Address

in the

spaces provided. Use the format: 00-00-00-00-00-00 for the MAC address and the standard format: 192.168.0.xxx for

the IP address. A Static DHCP Client List will appear below the DHCP Client list with any clients that have been

configured for static IP address assignment.

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WBMR-G54 Wireless ADSL Router User Guide

DNS

The Router can be configured to relay DNS settings from your ISP or another available service to workstations on your

LAN. When using DNS relay, the Router will accept DNS requests from hosts on the LAN and forward them to the

ISP’s, or alternative DNS servers. DNS relay can use auto discovery or the DNS IP address can be manually entered by

the user. Alternatively, you may also disable the DNS relay and configure hosts on your LAN to use DNS servers

directly. Most users who are using the Router for DHCP service on the LAN and are using DNS servers on the ISP’s

network, will leave DNS relay enabled (either auto discovery or user configured).

DNS Configuration window

In the DNS Relay Selection pull-down menu, choose to

Use Auto Discovered DNS Server Only

,

Use User Discovered

DNS ServerOnly

or

Disable

DNS Relay

.

If you have not been given specific DNS server IP addresses or if the Router is not pre-configured with DNS server

information, select the

Use Auto Discovered DNS ServerOnly

option. Auto discovery DNS instructs the Router to

automatically obtain the DNS IP address from the ISP through DHCP. If your WAN connection uses a Static IP

address, auto discovery for DNS cannot be used.

If you have DNS IP addresses provided by your ISP, enter these IP addresses in the available entry fields for the

Preferred DNS Server

and the

Alternative DNS Server

.

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WBMR-G54 Wireless ADSL Router User Guide

If you choose to

Disable DNS Relay

, it will be necessary to configure DNS settings for hosts on the LAN since they will

not be depending on the Router to forward the DNS requests.

When you have configured the DNS settings as desired, click the

Apply

button.

Note

To use DNS Relay for computers on your local network, DNS Service Filtering must be

disabled. See the

Firewall

section in the next chapter.

Dynamic DNS

The Router supports DDNS (Dynamic Domain Name Service). The Dynamic DNS service allows a dynamic public IP

address to be associated with a static host name in any of the many domains, allowing access to a specified host from

various locations on the Internet. This is enabled to allow remote access to a host by clicking a hyperlinked URL in the

form

hostname.dyndns.org

, Many ISPs assign public IP addresses using DHCP, this can make it difficult to locate a

specific host on the LAN using standard DNS. If for example you are running a public web server or VPN server on

your LAN, this ensures that the host can be located from the Internet if the public IP address changes. DDNS requires

that an account be setup with one of the supported DDNS providers.

DDNS Configuration window

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