Chapter 6 WAN Setup

The following table describes the labels in this screen.

Table 17 Network > WAN > Internet Access Setup: Advanced Setup

LABEL

DESCRIPTION

RIP & Multicast

This section is not available when you configure the ZyXEL Device to

Setup

be in bridge mode.

 

 

RIP Direction

RIP (Routing Information Protocol) allows a router to exchange

 

routing information with other routers. Use this field to control how

 

much routing information the ZyXEL Device sends and receives on the

 

subnet.

 

Select the RIP direction from None, Both, In Only and Out Only.

 

 

RIP Version

This field is not configurable if you select None in the RIP Direction

 

field.

 

Select the RIP version from RIP-1, RIP-2Band RIP-2M.

 

 

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).

 

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

 

used to establish membership in a multicast group. The ZyXEL Device

 

supports IGMP-v1, IGMP-v2and IGMP-v3. 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

 

rtVBR (real-time Variable Bit Rate) type for applications with bursty

 

connections that require closely controlled delay and delay variation.

 

Select nrtVBR (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

The Sustain Cell Rate (SCR) sets the average cell rate (long-term)

Rate

that can be transmitted. Type the SCR, which must be less than the

 

PCR. Note that system default is 0 cells/sec.

 

 

Maximum

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

Burst Size

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 1483, the MTU is 65535.

 

 

Back

Click this to return to the previous screen without saving.

 

 

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P-660HN-T1H User’s Guide