ZyXEL Communications P-2608HWL-Dx Series User Manual

P-2608HWL-Dx Series User’s Guide

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Chapter 7 WAN Setup

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.

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 

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. 

Zero 

Configuration

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

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 

Passthrough 

(PPPoE 

encapsulation 

only)

This field is available when you select PPPoE encapsulation. 
In addition to the ZyXEL Device's built-in PPPoE client, you can enable PPPoE 

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

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

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.

Table 25   Advanced Internet Access Setup (continued)