VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

RFC 1483 Routed Connections

Description:

Your description of this connection.

VPI and VCI:

Enter the information provided by your ISP.

ATM Class:

The Quality of Service for ATM layer.

NAT:

The NAT (Network Address Translation) feature allows multiple users to access the Internet

through a single IP account, sharing the single IP address. If users on your LAN have public IP

addresses and can access the Internet directly, the NAT function can be disabled.

Encapsulation method:

Selects the encapsulation format, the default is LLC Bridged. Select the

one provided by your ISP.

DHCP client:

Enable or disable the DHCP client, specify if the Router can get an IP address from

the Internet Service Provider (ISP) automatically or not. Please click

Obtain an IP address

automatically via DHCP client

to enable the DHCP client function or click Specify an IP address

to disable the DHCP client function, and specify the IP address manually. Your ISP specifies the

setting of this item.

RIP:

RIP v1, RIP v2, and RIP v2 Multicast. Check to enable RIP function.

MTU:

Maximum Transmission Unit. The size of the largest datagram (excluding media-specific

headers) that IP will attempt to send through the interface.

TCP MSS Clamp:

It is enabled by default.

All TCP traffic routed through the interface will be

examined. If a TCP SYN (synchronize/start) segment is sent with a maximum segment size larger

than the interface MTU (Maximum Transmission Unit), the MSS option will be rewritten in order to

allow TCP traffic to pass through the interface without requiring fragmentation.

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VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

RFC 1483 Bridged Connections

VPI and VCI:

Enter the information provided by your ISP.

ATM Class:

The Quality of Service for ATM layer.

Encapsulation method:

Select the encapsulation format, this is provided by your ISP.

Acceptable Frame Type:

Specify what kind of traffic can through this connection, all traffic or only

VLAN tagged.

Filter Type:

Specify the type of ethernet filtering performed by the named bridge interface.

All

Allows all types of ethernet packets through the port.

Ip

Allows only IP/ARP types of ethernet packets through the port.

Pppoe

Allows only PPPoE types of ethernet packets through the port.

PVID for Untagged Frames:

PVID is known as Port VLAN Identifier. When an untagged packet is

received by input port(s), this packet will be tagged with specified PVID. The valid value range for

PVID is 1~4094.

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VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

PPPoA Routed Connections

Description:

User-definable name for the connection.

VPI/VCI:

Enter the information provided by your ISP.

ATM Class:

The Quality of Service for ATM layer.

NAT:

The NAT (Network Address Translation) feature allows multiple users to access the Internet

through a single IP account, sharing a single IP address. If users on your LAN have public IP

addresses and can access the Internet directly, the NAT function can be disabled.

Username:

Enter the username provided by your ISP. You can input up to

128

alphanumeric

characters (case sensitive). This will usually be in the format of “username@ispname” instead of

simply “username”.

Password:

Enter the password provided by your ISP. You can input up to

128

alphanumeric

characters (case sensitive).

IP Address:

Specify an IP address allowed to logon and access the router’s web server.. Note:

IP

0.0.0.0 indicates all users who are connected to this router are allowed to logon the device and

modify data.

Authentication Protocol Type:

Default is

Chap (Auto

). Your ISP will advise you whether to use

Chap

or

Pap.

Connection:

~

Always on:

If you want the router to establish a PPPoA session when starting up and to

automatically re-establish the PPPoA session when disconnected by the ISP.

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VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

~

Connect to Demand:

If you want to establish a PPPoA session only when there is a

packet requesting access to the Internet (i.e. when a program on your computer attempts to

access the Internet).

Idle Timeout:

Auto-disconnect the broadband firewall gateway when there is no activity on the

line for a predetermined period of time.

~

Detail:

You can define the destination port and packet type (TCP/UDP) without checking by

timer. It allows you to set which outgoing traffic will not trigger and reset the idle timer.

RIP:

RIP v1, RIP v2, and RIP v2 Multicast. Check to enable RIP function.

MTU:

Maximum Transmission Unit. The size of the largest datagram (excluding media-specific

headers) that IP will attempt to send through the interface.

TCP MSS Clamp:

It is enabled by default.

All TCP traffic routed through the interface will be

examined. If a TCP SYN (synchronize/start) segment is sent with a maximum segment size larger

than the interface MTU (Maximum Transmission Unit), the MSS option will be rewritten in order to

allow TCP traffic to pass through the interface without requiring fragmentation.

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VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

Advanced Options (PPPoA)

LLC Header:

Selects encapsulation mode, true for using LLC or false for using VC-Mux.

Create Route:

This setting specifies whether a route is added to the system after IPCP (Internet

Protocol Control Protocol) negotiation is completed. If set to

enabled

, a route will be created which

directs packets to the remote end of the PPP link.

Specific Route:

Specifies whether the route created when a PPP link comes up is a specific or

default route. If set to

enabled

, the route created will only apply to packets for the subnet at the

remote end of the PPP link. The address of this subnet is obtained during IPCP negotiation.

Subnet Mask:

sets the subnet mask used for the local IP interface connected to the PPP transport.

If the value

0.0.0.0

is supplied, the netmask will be calculated from the class of the IP address

obtained during IPCP negotiation.

Route Mask:

Sets the subnet mask used by the route that is created when a PPP link comes up. If

it is set to

0.0.0.0

, the subnet mask is determined by the IP address of the remote end of the link.

The class of the IP address is obtained during IPCP (Internet Protocol Control Protocol)

negotiation.

MRU:

Maximum Receive Unit. This is negotiated during the LCP protocol stage.

Discover

Primary

/

Secondary

DNS:

This

setting

enables/disables

whether

the

primary/secondary DNS server address is requested from a remote PPP peer using IPCP. The

default setting for this command is

enabled

.

Give DNSto Relay:

Controls whether the PPP Internet Protocol Control Protocol (IPCP) can

request the DNS server IP address for a remote PPP peer. Once IPCP has discovered the DNS

server IP address, it automatically gives the address to the local DNS relay so that a connection

can be established.

Give DNSto Client:

Controls whether the PPP Internet Protocol Control Protocol (IPCP) can

request a DNS server IP address for a remote PPP peer. Once IPCP has discovered the DNS

server IP address, it automatically gives the address to the local DNS client so that a connection

can be established.

Give DNSto DHCP Server:

Similar to the above, but gives the DNS server address to the DHCP

server.

Discover Primary NBNS / Discover Secondary NBNS:

This setting enables/disables whether

the primary/secondary NBNS server address is requested from a remote PPP peer using IPCP.

The default setting for this command is disabled.

Discover Subnet Mask:

Specifies if the subnet mask given by IPCP negotiation process is to be

used.

Give Subnet Mask To DHCP Server:

Enable to change your DHCP Server settings by using the

given information in IPCP negotiation process.

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