ZyXEL P-660HW-67 User Guide - Page 104

WAN Technical Reference

Page 104 highlights

Chapter 6 WAN Setup The following table describes the labels in this screen. Table 20 Network > WAN > More Connections: Edit: Advanced Setup LABEL DESCRIPTION RIP & Multicast Setup RIP Direction Select the RIP Direction from None, Both, In Only and Out Only. Version This field is not configurable if you select None in the RIP Direction field. Multicast ATM QoS ATM QoS Type Peak Cell Rate Sustain Cell Rate Maximum Burst Size MTU MTU Select the RIP Version from RIP-1, RIP-2B and RIP-2M. Internet Group Multicast Protocol (IGMP) is a network-layer protocol used to establish membership in a multicast group. The ZyXEL Device supports IGMPv1 and IGMP-v2. Select None to disable it. 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. 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. 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 (MBS) refers to the maximum number of cells that can be sent at the peak rate. Type the MBS, which is less than 65535. 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. Back Apply Cancel For PPPoA and RFC, the MTU is 100-1500. Click this to return to the previous screen without saving. Click this to save your changes. Click this to restore your previously saved settings. 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. 104 ADSL Router Series User's Guide

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Chapter 6 WAN Setup
ADSL Router Series User’s Guide
104
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
RIP & Multicast Setup
RIP Direction
Select the
RIP Direction
from
None
,
Both
,
In Only
and
Out Only
.
Version
This field is not configurable if you select
None
in the
RIP Direction
field.
Select the
RIP Version
from
RIP-1
,
RIP-2B
and
RIP-2M
.
Multicast
Internet Group Multicast Protocol (IGMP) is a network-layer protocol used to
establish membership in a multicast group. The ZyXEL Device supports
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
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 100-1500.
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.