ZyWALL 2 Series User’s Guide

 

Table 6-7 IP Setup

 

 

LABEL

DESCRIPTION

 

 

Private (PPPoE and

This parameter determines if the ZyWALL will include the route to this remote

PPTP only)

node in its RIP broadcasts. If set to Yes, this route is kept private and not

 

included in RIP broadcast. If No, the route to this remote node will be

 

propagated to other hosts through RIP broadcasts.

 

 

RIP Direction

RIP (Routing Information Protocol) allows a router to exchange routing

 

information with other routers. The RIP Direction field controls the sending and

 

receiving of RIP packets.

 

Choose Both, None, In Only or Out Only.

 

When set to Both or Out Only, the ZyWALL will broadcast its routing table

 

periodically.

 

When set to Both or In Only, the ZyWALL will incorporate RIP information that

 

it receives.

 

When set to None, the ZyWALL will not send any RIP packets and will ignore

 

any RIP packets received.

 

By default, RIP Direction is set to Both.

 

 

RIP Version

The RIP Version field controls the format and the broadcasting method of the

 

RIP packets that the ZyWALL sends (it recognizes both formats when

 

receiving).

 

Choose RIP-1,RIP-2B or RIP-2M.

 

RIP-1is universally supported; but RIP-2carries 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-2B uses subnet broadcasting while RIP-2M uses

 

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. By default, the RIP Version field is

 

set to RIP-1.

Multicast

Choose None (default), IGMP-V1or IGMP-V2. IGMP (Internet Group Multicast

 

Protocol) is a network-layer protocol used to establish membership in a

 

Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is

 

an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide

 

use. If you would like to read more detailed information about interoperability

 

between IGMP version 2 and version 1, please see sections 4 and 5 of RFC

 

2236.

 

 

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