Alcatel-Lucent 6850-48 Network Guide

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IPMSv6 Overview
Configuring IP Multicast Switching
page 42-22
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
IPMSv6 Overview
An IPv6 multicast address identifies a group of nodes. A node can belong to any number of multicast 
groups. IPv6 multicast addresses are classified as fixed scope multicast addresses and variable scope 
multicast addresses.(See the 
IPMSv6 tracks the source VLAN on which the Multicast Listener Discovery Protocol (MLD) requests are 
received. The network interfaces verify that a multicast packet is received by the switch on the source (or 
expected) port.
IPMSv6 Example
The figure on the following page shows an IPMSv6 network where video content can be provided to 
clients that request it. A server is attached to the switch that provides the source (i.e, multicast) IPv6 
addresses. Clients from two different attached networks send MLD reports to the switch to receive the 
video content.
Video
OmniSwitch
Network A
Network B
Multicast Server
(source IPv6 address)
Multicast Stream
(destination IPv6 address)
Ports on end stations send 
MLD requests to receive 
multicast traffic.
Source Port
Multicast Group
(dynamically built)