Zyxel-communications P-660HN-TxA Manual de usuario descargar pdf (Pagina 83)

Chapter 6 WAN Setup

P-660HN-TxA User’s Guide

The following table describes the labels in this screen.

6.4 WAN Technical Reference

This section provides some technical background information about the topics

covered in this chapter.

6.4.1 Encapsulation

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

supports the following methods.

Table 20 Network > WAN > More Connections: Edit: Advanced Setup

LABEL DESCRIPTION

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 nrtVBR (Variable Bit Rate-non Real Time) or rtVBR

(Variable Bit Rate-Real Time) for bursty traffic and bandwidth

sharing with other applications.

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.

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 65535.

Back Click this to return to the previous screen without saving.

Apply Click this to save your changes.

Cancel Click this to restore your previously saved settings.

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Zyxel-communications P-660HN-TxA Manual de usuario Pagina 83