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Prestige 2602R Series User’s Guide

Chapter 4 LAN Setup 54

4.5.2.1 IP Pool Setup

The Prestige is pre-configured with a pool of IP addresses for the DHCP clients (DHCP Pool).

See the product specifications in the appendices. Do not assign static IP addresses from the

Prestige-assigned DHCP pool to your LAN computers.

4.5.3 RIP Setup

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.

When set to:

• Both - the Prestige will broadcast its routing table periodically and incorporate the RIP

information that it receives.

• In Only - the Prestige will not send any RIP packets but will accept all RIP packets

received.

• Out Only - the Prestige will send out RIP packets but will not accept any RIP packets

received.

• None - the Prestige will not send any RIP packets and will ignore any RIP packets

received.

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

Prestige sends (it recognizes both formats when receiving). RIP-1 is 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-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that

RIP-2B uses subnet broadcasting while RIP-2M uses multicasting.

4.5.4 Multicast

Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1

recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to

a group of hosts on the network - not everybody and not just 1.

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. The class D IP address is

used to identify host groups and can be in the range 224.0.0.0 to 239.255.255.255. The address

224.0.0.0 is not assigned to any group and is used by IP multicast computers. The address

224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts

(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP.

The address 224.0.0.2 is assigned to the multicast routers group.

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ZyXEL Communications P-2602R-63 Betriebsanweisung Seite 54