P-661H/HW Series User’s Guide

Figure 39 Advanced Internet Connection

The following table describes the labels in this screen.

Table 25 Advanced Internet Connection

LABEL

DESCRIPTION

 

 

RIP & Multicast

 

Setup

 

RIP Direction

RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to

 

exchange routing information with other routers. The RIP Direction field controls

 

the sending and receiving of RIP packets. Select the RIP direction from Both/In

 

Only/Out Only/None. When set to Both or Out Only, the ZyXEL Device will

 

broadcast its routing table periodically. When set to Both or In Only, it will

 

incorporate the RIP information that it receives; when set to None, it will not send

 

any RIP packets and will ignore any RIP packets received.

RIP Version

This field is enabled if RIP Direction is not None. The RIP Version field controls

 

the format and the broadcasting method of the RIP packets that the ZyXEL Device

 

sends (it recognizes both formats when receiving). RIP-1is universally supported

 

but RIP-2 carries more information. RIP-1 is probably adequate for most networks,

 

unless you have an unusual network topology. Both RIP-2Band RIP-2Msends the

 

routing data in RIP-2 format; the difference being that RIP-2Buses subnet

 

broadcasting while RIP-2Muses multicasting. Multicasting can reduce the load on

 

non-router machines since they generally do not listen to the RIP multicast address

 

and so will not receive the RIP packets. However, if one router uses multicasting,

 

then all routers on your network must use multicasting, also.

Multicast

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

 

establish membership in a multicast group. The ZyXEL Device supports both IGMP

 

version 1 (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 VBR-nRT(Variable Bit Rate-non Real Time) or

 

VBR-RT(Variable Bit Rate-Real Time) for bursty traffic and bandwidth sharing with

 

other applications.

Chapter 4 WAN Setup

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