Avaya Configuring DLSw Services Manual do Utilizador descarregar pdf (Página 31)

Data Link Switching Overview

303523-A Rev. 00

1-7

• Under RFC 2166, network connections are established only when needed and

maintained only as long the end stations require. In addition, end stations use

multicast IP to send the initial CanuReach (or NetBIOS) messages, thus

reducing the amount of traffic on the network.

By default, DLSw operates in RFC 1434 mode. You can use Site Manager to

configure DLSw in RFC 2166 multicast mode. For instructions, see “Configuring

DLSw for IP Multicasting” in Chapter 4

Configuring IP Multicast Protocols on the Router

A router configured for DLSw with IP multicasting support must also be running:

•IP

•IGMP

• DVMRP, MOSPF, or both

You must configure IP on at least one slot on the router and assign an IP address to

each DLSw slot as described in Chapter 4

For complete information about IP multicasting and instructions for configuring

IGMP, DVMRP, and MOSPF on the router, see Configuring IP Multicasting and

Multimedia Services.

Assigning an IP Multicast Group Address to a Slot

In an IP multicasting network, a sender---or source---of IP multicast datagrams

addresses each datagram to a group of receivers. An IP multicast group address is

a Class D address (the high-order bits are set to 1110) from 224.0.0.0 to

239.255.255.255.

On a router configured for DLSw multicasting, each DLSw slot is associated with

an IP multicast group address. The router in Figure 1-1

, for example, is running

DLSw on slot 3. The network administrator has assigned the group address

224.0.10.0 to slot 3.

Note:

Do not use addresses 224.0.0.0 through 224.0.0.255; these addresses are

used for control purposes only.

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Avaya Configuring DLSw Services Manual do Utilizador Página 31