Avaya Configuring IP Multicasting and Multimedia Services Uživatelský manuál stáhnout pdf (Strana 31)

Multicasting and Multimedia Overview

117355-D Rev 00

1-7

Table 1-1. Packet Migration Between Multicast and Nonmulticast Networks

Router

Receives This

Type of Packet

On This Type

of Interface Forwarding Action and How to Enable

Unicast or

broadcast

Multicast The multicast protocol running on the interface forwards the packet to

a multicast destination address or a list of multicast destination

addresses based on a configured IP traffic filter. (The IP traffic filter

converts the unicast or broadcast packets to multicast.) See

1-1

Figure 1-1.

Multicast Multicast The multicast protocol running on the router forwards the packet on to

either:

• A multicast configured outbound interface, based on the multicast

protocol decisions.

• A nonmulticast, IGMP static configured outbound circuit. In Site

Manager, you must set the IGMP static forwarding entries policy

for

Dynamic to Static

forwarding mode. See Figure 1-2.

Multicast Nonmulticast,

IGMP static

configured

If you set the IGMP static forwarding policy for

Static to Dynamic

forwarding mode, and if multicast protocols are running on the

outbound interfaces, the router forwards multicast packet traffic to a

multicast enabled network. You must also set the IGMP interface

parameter Static Forward Cache Lifetime to a value in accordance

with the particular multicast protocol (DVMRP or MOSPF) that is

running on the outbound interface. See Figure 1-3

If you set the IGMP static forwarding policy for

Static

forwarding

mode, the router forwards the multicast traffic to a nonmulticast, static

configured interface. See Figure 1-4.

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Avaya Configuring IP Multicasting and Multimedia Services Uživatelský manuál Strana 31