6381-A4 Router Users Guide

41

Microsoft CHAP v2 is also supported with the Auto and CHAP options. However,

MS CHAP v1 is not supported.

MTU

The Maximum Transmission Unit the DSL connection can send. It is a negotiated

value. The PPPoA interface default MTU is 1492 (max) and PPPoA default MTU is

1500 (max). The minimum MTU value is 64.

On Demand

Enables On Demand mode. The connection disconnects if no activity is detected

after the specified idle timeout value. When checked, this field enables the

following fields:

•

Idle Timeout

•

Host Trigger

•

Valid Rx

Default

Gateway

If checked, this WAN connection acts as the default gateway to the Internet.

Enforce MTU

Check this box if you experience problems accessing the Internet over a PPPoE

connection. This feature will force all TCP traffic to conform with PPP MTU by

changing TCP Maximum Segment Size to the PPP MTU.

The

Enforce MTU

feature is enabled by default. It forces all TCP traffic to conform

with PPP MTU by changing TCP maximum segment size to PPP MTU. If it is

disabled, you may have issues accessing some Internet sites.

Debug

Enables PPPoA connection debugging facilities. The

Debug

option is used by ISP

technical support and ODM/OEM testers to simulate packets going through the

network from the WAN side.

PPP

Unnumbered

Specifies that the calling and answering routers will not request IP addresses.

PPP Unnumbered is a special feature. It enables the ISP to designate a block of

public IP addresses to the customer where it is statically assigned on the LAN

side. PPP Unnumbered is, in essence, like a bridged connection.

LAN

The LAN field is associated with the PPP Unnumbered field and is enabled when

the PPP Unnumbered field is checked. You can specify the LAN group the packets

need to go to when the PPP Unnumbered feature is activated.

7.

In the

PVC Settings

section, enter values as supplied by your ISP.

Please see PVC Settings from the PPPoE Setup procedure.

8.

Select the

Quality of Service (

QOS

).

Leave the default value if your ISP did not provide this information. Depending on the QoS

you select, you may also enter:

•

PCR (Peak Cell Rate)

•

SCR (Sustainable Cell Rate)

•

MBS (Maximum Burst Size)

•

CDVT (Cell Delay Variation Tolerance)

9.

To complete the connection you must now click the

Apply

button.

The

Apply

button will temporarily save this connection. To make the change permanent,

click

Tools

(at the top of the page) and select

System Commands

. On the

System

Commands

page, click

Save All

.

6381-A4 Router Users Guide

42

Static Connection Setup

A static connection is used whenever a known static IP is assigned. The accompanying

information such as the subnet mask and the default gateway should also be specified. Up to

three Domain Name Server (DNS) addresses can also be specified. These servers give you

access to other web servers. The valid IP addresses range is from 1.0.0.0 to 223.255.255.254.

To configure the router for a Static connection:

1.

From the

Home

page, click

Setup

and then click

New Connection

.

The default PPPoE connection setup is displayed as the default setup.

2.

In the

Type

dropdown select

Static

The Static connection setup page is displayed.

3.

In the

Name

text box enter a unique name for the connection

The name must not have spaces and cannot begin with numbers.

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43

4.

Network Address Translation (

NAT

) and the

Firewall

options are enabled by default. Leave

these options enabled.

5.

In the

Static Settings

section, select the

Encapsulation

Type (

LLC

or

VC

) as supplied by

your ISP.

If you are not sure, just leave the default.

6.

Enter your enter your assigned

IP Address

, Subnet

Mask

,

Gateway

,

Default Gateway

, and

Domain Name Services (

DNS

) values as provided by your ISP.

7.

For the static configuration, you can also select a

Bridged

connection or a

Routed

connection as provided by your ISP.

8.

In the

PVC Settings

section, enter values for

VPI

and

VCI

as supplied by your ISP.

For more information, please see PVC Settings from the PPPoE Setup procedure.

9.

Select the quality of service (

QOS

). Leave the default value if your ISP did not provide this

information.

The

PCR

,

SCR

, and

MBS

fields are enabled/disabled depending on the QoS selection.

Enter the values provided by the ISP or leave the defaults.

10.

To complete the connection click

Apply

.

The

Apply

button will temporarily save this connection. To make the change permanent,

click

Tools

(at the top of the page) and select

System Commands

. On the

System

Commands

page, click

Save All

.

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44

DHCP Connection Setup

Dynamic Host Configuration Protocol (DHCP) allows the router to automatically obtain the IP

address from the server. This option is commonly used in situations where IP is dynamically

assigned and is not known prior to assignment.

To configure the router for a DHCP connection:

1.

From the

Home

page, click

Setup

and then click

New Connection

.

The default PPPoE connection setup is displayed as the default setup.

2.

In the

Type

dropdown select

DHCP.

The DHCP connection setup page is displayed.

3.

In the

Name

text box enter a unique name for the DHCP connection

The name must not have spaces and cannot begin with numbers.

6381-A4 Router Users Guide

45

4.

Network Address Translation (

NAT

) and the

Firewall

options are enabled by default. Leave

these options enabled.

5.

If your DSL line is connected and your DSL provider is supporting DHCP, you can click the

Renew

button and the router will retrieve an IP Address, Subnet Mask, and Default Gateway

address.

At any time you can renew the DHCP address by clicking on the Renew button.

6.

In the

PVC Settings

section, enter values for

VPI

and

VCI

as supplied by your ISP.

For more information, please see PVC Settings from the PPPoE Setup procedure.

7.

Select the quality of service (

QOS

).

Leave the default value if your ISP did not provide this information.

Depending on the QoS

you select, you may also enter:

•

PCR

(Peak Cell Rate)

•

SCR

(Sustainable Cell Rate)

•

MBS

(Maximum Burst Size)

•

CDVT

(Cell Delay Variation Tolerance)

8.

To complete the connection click

Apply

.

The

Apply

button will temporarily save this connection. To make the change permanent,

click

Tools

(at the top of the page) and select

System Commands

. On the

System

Commands

page, click

Save All

.