Atlantis-Land WebShare-111 Router Manual PDF (Setup & Configuration Guide)

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an ATM network. This agreement helps eliminate congestion, which is important

for transmission of real time data such as audio and video connections.

Peak Cell Rate (PCR) is the maximum rate at which the sender can send cells.

This parameter may be lower (but not higher) than the maximum line speed. 1

ATM cell is 53 bytes (424 bits), so a maximum speed of 832 Kbps gives a

maximum PCR of 1962 cells/sec. This rate is not guaranteed because it is

dependent on the line speed.

Sustained Cell Rate (SCR) is the mean cell rate of a bursty, on-off traffic source

that can be sent at the peak rate, and a parameter for burst-type traffic. SCR may

not be greater than the PCR; the system default is 0 cells/sec.

Maximum Burst Size (MBS) is the maximum number of cells that can be sent at

the PCR. After MBS is reached, cell rates fall below SCR until cell rate averages

to the SCR again. At this time, more cells (up to the MBS) can be sent at the PCR

again.The following figure illustrates the relationship between PCR, SCR and

MBS.

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6.5 Configuring WAN Setup

To change the ADSL Router’s WAN remote node settings, click

Interface Setup

then

Internet

. The screen differs by the encapsulation.

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The following table describes the labels in this screen.

PARAMETRES

DESCRIPTION

ATM VC

Virtual Circuit ID

VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier)

define a virtual circuit.

Status

Activated or Deactivated

VPI

The valid range for the VPI is 0 to 255. Enter the VPI assigned

to you. This field may already be configured.

VCI

The valid range for the VCI is 32 to 65535. Enter the VCI

assigned to you. This field may already be configured.

ATM QoS Type

Select CBR (Continuous Bit Rate) to specify fixed (always-on)

bandwidth for voice or data traffic. Select UBR (Unspecified Bit

Rate) for applications that are non-time sensitive, such as e-

mail. Select VBR (Variable Bit Rate) for bursty traffic and

bandwidth sharing with other applications.

VBR is not available on all models.

Cell Rate

Cell rate configuration often helps eliminate traffic congestion

that slows transmission of real time data such as audio and

video connections.

Peak Cell Rate

Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to

find the Peak Cell Rate (PCR). This is the maximum rate at

which the sender can send cells. Type the PCR here.

Sustain Cell

Rate

The Sustain Cell Rate (SCR) sets the average cell rate (long-

term) that can be transmitted. Type the SCR, which must be

less than the PCR.

Maximum Burst

Size

Maximum Burst Size (MBS) refers to the maximum number of

cells that can be sent at the peak rate. Type the MBS, which is

less than 65535.

ENCAPSULATION

Encapsulation

Select the method of encapsulation used by your ISP from the

drop-down list box.

PPPoA/PPPoE

Service Name

(PPPoE only) Type the name of your PPPoE service here.

User Name

Enter the user name exactly as your ISP assigned. If assigned a

name in the form user@domain where domain identifies a

service name, then enter both components exactly as given.

Password

A static IP address is a fixed IP that your ISP gives you. A

dynamic IP address is not fixed; the ISP assigns you a different

one each time you connect to the Internet. The Single User

Account feature can be used with either a dynamic or static IP

address.

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Select Obtain an IP Address Automatically if you have a

dynamic IP address; otherwise select Static IP Address and

type your ISP assigned IP address in the IP Address field below.

Multiplex

Select the method of multiplexing used by your ISP from the

drop-down list. Choices are VC or LLC.

Connection Settings

Always ON

Select

Always ON

Connection when you want your connection

up all the time. The ADSL Router will try to bring up the

connection automatically if it is disconnected.

Connect on

Demand

Connect on demand is dependent on the traffic. If there is no

traffic (or Idle) for a pre-specified period of time), the connenct

will tear down automatically. And once there is traffic send or

receive, the connection will be automatically on. Please insert

the Idle Time in minute.

IP Address

Get IP Address

The IP address can be either dynamically (via DHCP) or given

IP address provide by your ISP. For Static IP, you need to

specify the IP address, Subnet Mask and Gateway IP address.

IP Address

You must specify a Router IP address.

IP Subnet Mask

Enter a subnet mask in dotted decimal notation.

Refer to the Subnetting appendix in the to calculate a subnet

mask If you are implementing subnetting.

Gateway

You must specify a gateway IP address.

NAT

Select this option to Activate/Deactivated the NAT (Network

Address Translation) function for this VC. The NAT function can

be activated or deactivated per PVC basis.

Default Route

if enable this function, the current PVC will be the default

gateway to internet from this device.

Dynamic Route

RIP

(Routing Information protocol) Select this option to specify

the RIP version, including

RIP-1

RIP-2M

and

RIP-2B

. RIP-2M

and RIP-2B are both sent in RIP-2 format; the difference is that

RIP-2M using Multicast and RIP-2 using Broadcast format.

Direction

RIP Direction

Select this option to specify the RIP direction.

None

is for disabling the RIP function.

Both

means the ADSL

Router will periodically send routing information and accetp

routing information then incorporate into routing table.

IN only

means the ADLS router will only accept but will not send RIP

packet.

OUT olny

means the ADLS router will only send but will

not accept RIP packet.

Multicast

IGMP

(Internet Group Multicast Protocol) is a session-layer

protocol used to establish membership in a multicast group. The

ADSL ATU-R supports both IGMP version 1 (

IGMP-v1

) and

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IGMP-v2

. Select

None

to disable it.

Save

Click Apply to save the changes.

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