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Cisco IOS in a Nutshell, 2nd Edition by James Boney

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Name

ip nhrp map multicast — interface

Synopsis

ip nhrp map multicast
no ip nhrp map multicast

Configures

An NBMA address for broadcast or multicast packets

Default

None

Description

This command defines a nonbroadcast multi-access (NBMA) address to which to send broadcast or multicast traffic. An NBMA address is a MAC address for Ethernet networks or an NSAP address for ATM networks. A configuration may include several of these commands, each defining another NBMA address. This command allows you to send multicast traffic through a tunnel that crosses networks that do not support IP multicasting. It may be used only on tunnel interfaces.

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