Chapter 7 WAN Setup

 

Table 23 Advanced Internet Access Setup (continued)

 

LABEL

DESCRIPTION

 

Multicast

Multicast packets are sent to a group of computers on the LAN and are an

 

 

alternative to unicast packets (packets sent to one computer) and broadcast

 

 

packets (packets sent to every computer).

 

 

IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to

 

 

establish membership in a multicast group. The ZyXEL Device supports both IGMP

 

 

version 1 (IGMP-v1) and IGMP-v2. Select None to disable it.

 

 

 

 

ATM QoS

 

 

 

 

 

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-RT(real-time Variable Bit Rate) type for

 

 

applications with bursty connections that require closely controlled delay and delay

 

 

variation. Select VBR-nRT(non real-time Variable Bit Rate) type for connections

 

 

that do not require closely controlled delay and delay variation.

 

 

 

 

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. Note that system

 

 

default is 0 cells/sec.

 

 

 

 

Maximum Burst

Maximum Burst Size (MBS) refers to the maximum number of cells that can be

 

Size

sent at the peak rate. Type the MBS, which is less than 65535.

 

 

 

 

Zero

This feature is not applicable/available when you configure the ZyXEL Device to

 

Configuration

use a static WAN IP address or in bridge mode.

 

 

Select Yes to set the ZyXEL Device to automatically detect the Internet connection

 

 

settings (such as the VCI/VPI numbers and the encapsulation method) from the

 

 

ISP and make the necessary configuration changes.

 

 

Select No to disable this feature. You must manually configure the ZyXEL Device

 

 

for Internet access.

 

 

 

 

PPPoE

This field is available when you select PPPoE encapsulation.

 

Passthrough

In addition to the ZyXEL Device's built-in PPPoE client, you can enable PPPoE

 

(PPPoE

pass through to allow up to ten hosts on the LAN to use PPPoE client software on

 

encapsulation

their computers to connect to the ISP via the ZyXEL Device. Each host can have a

 

only)

separate account and a public WAN IP address.

 

 

PPPoE pass through is an alternative to NAT for application where NAT is not

 

 

appropriate.

 

 

Disable PPPoE pass through if you do not need to allow hosts on the LAN to use

 

 

PPPoE client software on their computers to connect to the ISP.

 

 

 

 

Back

Click Back to return to the previous screen.

 

 

 

 

Apply

Click Apply to save the changes.

 

 

 

 

Cancel

Click Cancel to begin configuring this screen afresh.

 

 

 

7.6 WAN More Connections

The ZyXEL Device allows you to configure more than one Internet access connection. To configure additional Internet access connections click Network > WAN > More Connections. The screen differs by the encapsulation you select.

 

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P-2602H(W)(L)-DxA User’s Guide