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81

The following table describes the labels in this screen.

Table 20

Network > WAN > Internet Connection: PPPoE Encapsulation

LABEL

DESCRIPTION

ISP Parameters for Internet Access

Encapsulation

Select

PPPoE

if you connect to your Internet via dial-up.

IPv4 / IPv6

Select

IPv4 Only

if you want the NBG6817 to run IPv4 only.

Select

Dual Stack

to allow the NBG6817 to run IPv4 and IPv6 at the same time.

Select

IPv6 Only

if you want the NBG6817 to run IPv6 only.

PPP Information

PPP Username

Type the user name given to you by your ISP.

PPP Password

Type the password associated with the user name above.

MTU Size

Enter the Maximum Transmission Unit (MTU) or the largest packet size per frame that

your NBG6817 can receive and process.

PPP Auto Connect

Select this option if you do not want the connection to time out.

IDLE Timeout

(second)

This value specifies the time in seconds that elapses before the router automatically

disconnects from the PPPoE server.

PPPoE Service

Name

Enter the PPPoE service name specified in the ISP account.

WAN IP Address Assignment

Get automatically

from ISP

Select this option If your ISP did not assign you a fixed IP address. This is the default

selection.

Use Fixed IP

Address

Select this option and enter your WAN IP address if the ISP assigned a fixed IP address.

DNS Server

First DNS Server

Second DNS

Server

Third DNS Server

Select

Obtained From ISP

if your ISP dynamically assigns DNS server information (and

the NBG6817's WAN IP address). The field to the right displays the (read-only) DNS

server IP address that the ISP assigns.

Select

User-Defined

if you have the IP address of a DNS server. Enter the DNS server's

IP address in the field to the right.

Select

None

if you do not want to configure DNS servers. If you do not configure a DNS

server, you must know the IP address of a computer in order to access it.

WAN MAC Address

The MAC address section allows users to configure the WAN port's MAC address by using the NBG6817’s MAC

address, copying the MAC address from a computer on your LAN or manually entering a MAC address.

Factory default

Select

Factory default

to use the factory assigned default MAC Address.

Clone the

computer’s MAC

address - IP

Address

Select

Clone the computer's MAC address - IP Address

and enter the IP address of

the computer on the LAN whose MAC you are cloning.

Set WAN MAC

Address

Select this option and enter the MAC address you want to use.

IPv6 Tunneling

Use IPv6 tunneling when the local network uses IPv6 and the ISP has an IPv4 network. When the NBG6817

has an IPv4 WAN address and you set

IPv4/IPv6

mode to

IPv4 Only

, you can enable IPv6 tunneling to

encapsulate IPv6 packets in IPv4 packets to cross the ISP’s IPv4 network.

Chapter 10 WAN

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82

IPv6 Tunneling

Select

None

to not allow IPv6 packets to cross IPv4 networks.

Select

6RD

to enable 6RD. IPv6 Rapid Deployment (6RD) is an IPv6 transitioning

process for stateless tunneling of IPv6 over IPv4. Enable 6RD to allow tunneling across

an ISP's IPv4 only access network.

Select

6to4

to transmit IPv6 packets over an IPv4 network. A 6to4 relay router is

required to route 6to4 packets to a native IPv6 network.

Select

6in4

if the NBG6817 has a public IPv4 address and you want to transmit your

IPv6 packets to one and only one remote site whose LAN network is also an IPv6

network. You must know the WAN IP address of the remote gateway.

6RD

The NBG6817 generates a global IPv6 prefix from its IPv4 WAN address and tunnels IPv6 traffic to the ISP’s

Border Relay router to connect to the native IPv6 Internet. The local network can also use IPv4 services. The

NBG6817 uses its configured IPv4 WAN IP to route IPv4 traffic to the IPv4 Internet.

This is available only when you select

IPv4 Only

in the

IPv4/IPv6

field.

Automatically

configured by

DHCPC

Select this to have the NBG6817 detect the relay server’s IP address automatically

through DHCP.

Manually

Configured

Select this if you have the IPv4 address of the relay server.

Border Relay IPv4

Address

Specify the relay server’s IPv4 address.

Service Provider

IPv6 Prefix

Enter an IPv6 prefix for tunneling IPv6 traffic to the ISP’s Border Relay router and

connecting to the native IPv6 Internet.

Service Provider

IPv6 Prefix length

Enter the IPv6 prefix length.

An IPv6 prefix length specifies how many most significant bits (starting from the left) in

the address compose the network address.

IPv4 mask length

Enter the subnet mask number (1~32) for the IPv4 network.

6to4

The NBG6817 should get a public IPv4 address for the WAN. The NBG6817 adds an IPv4 IP header to an IPv6

packet when transmitting the packet to the Internet. In reverse, the NBG6817 removes the IPv4 header from

an IPv6 packet when receiving it from the Internet.

This is available only when you select

IPv4 Only

in the

IPv4/IPv6

field.

Relay Server IPv4

Address

Enter the IPv4 address of a 6to4 relay server which helps forward packets between 6to4

networks and native IPv6 networks.

6in4

The NBG6817 encapsulates IPv6 packets within IPv4 packets across the Internet. You must know the WAN IP

address of the remote gateway device. This mode is normally used for a site-to-site application such as two

branch offices.

This is available only when you select

IPv4 Only

in the

IPv4/IPv6

field.

Remote IPv4

Address

Enter the IPv4 address of the remote gateway to which this interface tunnels traffic.

Remote IPv6

Address

Enter the IPv6 address of the remote gateway to which this interface tunnels traffic.

Local IPv6 Address

Enter the IPv6 address assigned by your ISP.

IPv6 Prefix

Enter the IPv6 prefix for this interface if you want to use a static IP address.

Table 20

Network > WAN > Internet Connection: PPPoE Encapsulation (continued)

LABEL

DESCRIPTION

Chapter 10 WAN

NBG6817 User’s Guide

83

10.4.3

PPTP Encapsulation

This screen displays when you select

PPTP

encapsulation.

IPv6 DNS Server

This is available only when you select

IPv4 Only

in the

IPv4/IPv6

field and set

IPv6 Tunneling

to

6RD

,

6in4

or

6to4

.

First DNS Server

Second DNS

Server

Third DNS Server

Specify the DNS server IPv6 address assigned by the ISP.

IPv6 DNS Server

This is available only when you select

Dual Stack

or

IPv6 Only

in the

IPv4/IPv6

field.

First DNS Server

Second DNS

Server

Third DNS Server

Select

Obtained From ISP

to have the NBG6817 get the IPv6 DNS server addresses

from the ISP automatically.

Select

User-Defined

and enter the IPv6 DNS server address assigned by the ISP to

have the NBG6817 use the IPv6 DNS server addresses you configure manually.

Select

None

if you do not want to configure DNS servers. If you do not configure a DNS

server, you must know the IPv6 address of a computer in order to access it.

Multicast Setup

Multicast Setup

Select

IGMPv1/v2

to enable multicasting. This applies to traffic routed from the WAN to

the LAN.

Select

None

to disable this feature. This may cause incoming traffic to be dropped or

sent to all connected network devices.

Auto-Subnet Configuration

Enable Auto-IP-

Change Mode

Select this option to have the NBG6817 change its LAN IP address to 10.0.0.1 or

192.168.1.1 accordingly when the NBG6817 gets a dynamic WAN IP address in the same

subnet as the LAN IP address.

Select this option to have the NBG6817 change its LAN IP address to 10.0.0.1 or

192.168.1.1 accordingly when the NBG6817 gets a DNS server IP address in the same

subnet as the LAN IP address.

The NAT, DHCP server and firewall functions on the NBG6817 are still available in this

mode.

Apply

Click

Apply

to save your changes back to the NBG6817.

Cancel

Click

Cancel

to begin configuring this screen afresh.

Table 20

Network > WAN > Internet Connection: PPPoE Encapsulation (continued)

LABEL

DESCRIPTION

Chapter 10 WAN

NBG6817 User’s Guide

84

Figure 56

Expert Mode > WAN > Internet Connection: PPTP Encapsulation (IPv4 Only)

Chapter 10 WAN

NBG6817 User’s Guide

85

The following table describes the labels in this screen.

Table 21

Network > WAN > Internet Connection: PPTP Encapsulation

LABEL

DESCRIPTION

ISP Parameters for Internet Access

Encapsulation

Select

PPTP

if you want to connect the Internet via point to point tunneling protocol.

IPv4 / IPv6

This field is greyed out. The PPTP encapsulation only supports IPv4.

PPTP Information

PPTP Username

Enter the user name given to you by your ISP.

PPTP Password

Enter the password associated with the user name above.

PPTP Encryption

Type

Use the drop-down list box to select the type of Microsoft Point-to-Point Encryption

(MPPE). Options are:

Auto

- This ISP account adjusts the encryption type automatically.

No Encryption

- This ISP account does not use MPPE.

MPPE 40

- This ISP account uses 40-bit MPPE.

MPPE 128

- This ISP account uses 128-bit MMPE.

MTU Size

Enter the MTU (Maximum Transmission Unit) size for each packet. If a larger packet

arrives, the NBG6817 divides it into smaller fragments.

PPTP Auto Connect

Select this option if you do not want the connection to time out.

IDLE Timeout

[second]

Type the time in seconds that elapses before the router automatically disconnects from

the PPTP server. 0 means no timeout.

PPTP CONFIGURATION

PPTP Server IP

Address

Enter the IP address of the PPTP server.

Obtain an IP

Address

Automatically(DHCP

)

Select this radio button if the PPTP server did not assign you a fixed IP address.

Static IP Address

Select this radio button if the PPTP server assigned an IP address for your Internet

connection.

IP Address

Enter the IP address provided by the PPTP server.

Subnet Mask

Enter the IP subnet mask in this field.

Default Gateway

Enter the gateway IP address in this field.

WAN IP Address Assignment

Get automatically

from ISP

Select this option If your ISP did not assign you a fixed IP address. This is the default

selection.

Use Fixed IP

Address

Select this option If the ISP assigned a fixed IP address.

IP Address

Enter your WAN IP address in this field if you selected

Static IP Address

.

DNS Server

First DNS Server

Second DNS Server

Third DNS Server

Select

Obtained From ISP

if your ISP dynamically assigns DNS server information

(and the NBG6817's WAN IP address). The field to the right displays the (read-only)

DNS server IP address that the ISP assigns.

Select

User-Defined

if you have the IP address of a DNS server. Enter the DNS

server's IP address in the field to the right.

Select

None

if you do not want to configure DNS servers. If you do not configure a DNS

server, you must know the IP address of a computer in order to access it.