ZyXEL Communications Corporation AMG1302 Manual Do Utilizador

Chapter 6 WAN Setup

AMG1302-T10A User’s Guide

This section provides some technical background information about the topics covered in this 

chapter.

Be sure to use the encapsulation method required by your ISP. The Device supports the following 

methods.

The MAC Encapsulated Routing Link Protocol (ENET ENCAP) is only implemented with the IP 

network protocol. IP packets are routed between the Ethernet interface and the WAN interface and 

then formatted so that they can be understood in a bridged environment. For instance, it 

encapsulates routed Ethernet frames into bridged ATM cells. ENET ENCAP requires that you specify 

a gateway IP address in the Gateway IP Address field in the wizard or WAN screen. You can get 

this information from your ISP.

The Device supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF Draft standard 

(RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL, 

cable, wireless, etc.) connection. The PPPoE option is for a dial-up connection using PPPoE.

For the service provider, PPPoE offers an access and authentication method that works with existing 

access control systems (for example RADIUS).

One of the benefits of PPPoE is the ability to let you access one of multiple network services, a 

function known as dynamic service selection. This enables the service provider to easily create and 

offer new IP services for individuals.

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. 

MTU
MTU

The Maximum Transmission Unit (MTU) defines the size of the largest packet 

allowed on an interface or connection. Enter the MTU in this field.

For ENET ENCAP, the MTU value is 1500.

For PPPoE, the MTU value is 1492.

For PPPoA and RFC, the MTU is 100-1500.

Back

Click this to return to the previous screen without saving.

Apply

Click this to save your changes. 

Reset

Click this to restore your previously saved settings.

Network > WAN > More Connections: Edit: Advanced Setup (continued)