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DHCP Server

Select Yes to use internal DHCP server of the Cable Modem/Router,

or select No to disable it.

Starting Local

Address

Configure the starting IP address for IP leases available to devices

on the LAN.

Number of

CPEs

Configure the number of PCs supported on the LAN.

Lease Time

Configure the time a lease will last before it must be renewed.

Default is 86400 seconds, or 1 day.

DHCPv6

The DHCPv6 page allows you to configure an internal DHCPv6 server for your network.

To access the

DHCPv6

page:

1

Click

Basic

in the menu bar.

2

Then click the

DHCPv6

submenu.

Figure 12. Example of DHCPv6 Page shows an example of the menu and Table 7

DHCPv6 Menu Optiondescribes the items you can select.

Figure 12. Example of DHCPv6 Page

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Table 7 DHCPv6 Menu Option

Option

Description

System

Delegated Prefix

Enter the prefix for you IPv6 LAN network.

For example enter

FE80::1 if you want to use a Link Local address

User Defined

Prefix

Check to enable System Delegated Prefix.

LAN Delegated

Prefix

If using System Delegate Prefixes the LAN Delegated Prefix will

be automatically configured, otherwise enter your LAN delegated

Prefix.

Start Address

The starting IP address for your network.

Number of

Address

Number of address allowed by the server.

Valid Lifetime

How long the address is valid.

Enable Rapid

Commit

Rapid commit is enabled by default. It allows the Cable

Modem/Router to configure clients with a 2 message exchange

(solicit and reply) instead of a normal 4 message exchange

(solicit, advertise, request and reply). This helps to reduce traffic

on your network.

Most users should use the default setting.

Enable Unicast

Most users can safely ignore this setting. Enabling unicast allows

you to talk to only one node on the network.

Disable Stateless

DHCPv6

Click to disable Stateless DHCPv6.

LAN IPv6

The LAN IPv6 page displays information about .

To access the

LAN IPv6

page:

3

Click

Basic

in the menu bar.

4

Then click the

LAN IPv6

submenu.

Figure 13. Example of LAN IPv6 Page shows an example of the page and Table 8 LAN

IPv6 Option describes the items on the page.

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Figure 13. Example of LAN IPv6 Page

Table 8 LAN IPv6 Option

Option

Description

IP Address

The IP address of devices on your network

MAC Address

The MAC address of the device.

Reachability

State

Tells you the state of the device with this IP address.

DDNS

The DDNS page allows you to make use of a DDNS server. Dynamic DNS (DDNS)

allows a dynamic IP address to be aliased to a static, pre-defined host name so that the

host can be easily contacted by other hosts on the internet even if its IP address

changes. This means you can host a server on your LAN that can be accessed from

anywhere on the Internet.

Caution:

Some service providers may consider connection of such a server to be a

breach of your service agreement.

The Cable Modem/Router supports a dynamic DNS client compatible with the Dynamic

64

DNS service (

). You must sign up with this service if you want to

use it.

To access the

DDNS

page:

5

Click

Basic

in the menu bar.

6

Then click the

DDNS

submenu.

Figure 14 shows an example of the menu and Table 7 describes the items you can

select.

Figure 14. Example of DDNS Page

To activate the DDNS client:

1

Go to the DynDNS website and create an account for the

Dynamic DNS

service.

2

You will create a

username

and

password

, and be asked to choose a

host name

for your server, and the dynamic DNS domain to which your host will be assigned.

3

You will also be asked for your host’s current

IP address

. This is the WAN IP

address that has been assigned to your Cable Modem/Router during provisioning.

(See WAN IP Address on the Basic / Setup web page.)

4

Enter your account information on the Basic / DDNS web page, enable the service by

selecting www.DynDNS.org from the

DDNS Service

drop-down list, and click

Apply

.

5

The DDNS client will notify the DDNS service whenever the WAN IP address

changes so that your chosen host name will be resolved properly by inquiring hosts.

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The current status of the service is shown at the bottom of the DDNS web page.

Table 9. DDNS Menu Option

Option

Description

DDNS Service

Select the type of service that you are registered for from your

DDNS service provider.

User Name

Enter your DDNS account username subscribed to the service

provider.

Password

Enter the password of the account.

Host Name

Enter the host name of your service host.

IP Address

Shows the current WAN side public IP address.

Status

Shows the status of DDNS service.

Backup/Restore

Note:

Some software versions may not support this feature.

The Backup page allows you to save the current Cable Modem/Router configuration

settings to a local PC. You can then later restore these settings if you need restore a

particular configuration, or to recover from changes you may have made that have had

an undesirable effect.

To backup the current configuration:

Click

Backup

and follow the prompts.

To restore a previous configuration:

Click

Browse

and use the navigation window to locate the file. (Usually

GatewaySettings.bin, unless you rename it before saving.) Once the file has been

located, click

Restore

to restore the settings.

Note

: Once the settings are restored, the device will reboot.

To access the

Backup

page:

1

Click

Basic

in the menu bar.

2

Then click the

Backup/Restore

submenu.