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61

8.4.2

PPPoE Encapsulation

The EMG2926-Q10A supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF

standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem

(DSL, cable, wireless, etc.) connection. The

PPP over Ethernet

option is for a dial-up connection

using PPPoE.

For the service provider, PPPoE offers an access and authentication method that works with existing

access control systems (for example Radius).

One of the benefits of PPPoE is the ability to let you access one of multiple network services, a

function known as dynamic service selection. This enables the service provider to easily create and

offer new IP services for individuals.

Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no

specific configuration of the broadband modem at the customer site.

By implementing PPPoE directly on the EMG2926-Q10A (rather than individual computers), the

computers on the LAN do not need PPPoE software installed, since the EMG2926-Q10A does that

part of the task. Furthermore, with NAT, all of the LANs’ computers will have access.

Apply

Click

Apply

to save your changes back to the EMG2926-Q10A.

Cancel

Click

Cancel

to begin configuring this screen afresh.

Table 14

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

LABEL

DESCRIPTION

Chapter 8 WAN

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62

This screen displays when you select

PPPoE

encapsulation.

Figure 28

Network > WAN > Internet Connection: PPPoE Encapsulation (IPv4 Only)

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63

The following table describes the labels in this screen.

Table 15

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 EMG2926-Q10A to run IPv4 only.

Select

Dual Stack

to allow the EMG2926-Q10A to run IPv4 and IPv6 at the same time.

Select

IPv6 Only

if you want the EMG2926-Q10A 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 EMG2926-Q10A 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 minutes 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 If the ISP assigned a fixed IP address.

My WAN IP

Address

Enter your WAN IP address in this field if you selected

Use Fixed IP Address

.

6RD

Use IPv6 Rapid Deployment (6rd) when the local network uses IPv6 and the ISP has an IPv4 network. When

the EMG2926-Q10A has an IPv4 WAN address and you set IPv6/IPv4 mode to

IPv4 Only

, you can enable 6rd

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

The EMG2926-Q10A 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 EMG2926-Q10A 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

IPv6/IPv4

field.

Enable 6RD

Enable IPv6 rapid deployment to tunnel IPv6 traffic from the local network through the

ISP’s IPv4 network.

Automatically

configured by

DHCPC

Select this to have the EMG2926-Q10A 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.

Chapter 8 WAN

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8.5

Advanced WAN Screen

To change your EMG2926-Q10A’s advanced WAN settings, click

Network

>

WAN

>

Advanced

.

The screen appears as shown.

Figure 29

Network > WAN > Advanced

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 EMG2926-Q10A'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 EMG2926-Q10A’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 DNS server

This is not available when you select

IPv4 Only

in the

IPv6/IPv4

field.

Obtain IPv6 DNS

info Automatically

Select this to have the EMG2926-Q10A get the IPv6 DNS server addresses from the ISP

automatically.

Use the following

Static DNS IPv6

Address

Select this to have the EMG2926-Q10A use the IPv6 DNS server addresses you configure

manually.

IPv6 DNS Server

Enter the IPv6 DNS server address assigned by the ISP.

Apply

Click

Apply

to save your changes back to the EMG2926-Q10A.

Cancel

Click

Cancel

to begin configuring this screen afresh.

Table 15

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

LABEL

DESCRIPTION

Chapter 8 WAN

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65

The following table describes the labels in this screen.

Table 16

Network > WAN > Advanced

LABEL

DESCRIPTION

Multicast Setup

Multicast

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 EMG2926-Q10A change its LAN IP address to 10.0.0.1

or 192.168.1.1 accordingly when the EMG2926-Q10A gets a dynamic WAN IP

address in the same subnet as the LAN IP address 192.168.1.1 or 10.0.0.1.

The NAT, DHCP server and firewall functions on the EMG2926-Q10A are still available

in this mode.

Apply

Click

Apply

to save your changes back to the EMG2926-Q10A.

Cancel

Click

Cancel

to begin configuring this screen afresh.