Design Reference

Chapter 14: IP multicast network design
Use multicast routing protocols to efficiently distribute a single data source among multiple users in
the network. This section provides information about how to design networks that support IP
multicast routing.
For more information about multicast routing, see Avaya Virtual Services Platform 4000 Series
Configuration — IP Multicast Routing Protocols, NN46251-504.
For design guidelines on IP Multicast over SPBM, see
SPBM design guidelines on page 71.
For more conceptual and configuration information about IP Multicast over SPBM, see Configuring
Avaya VENA Fabric Connect on Avaya Virtual Services Platform 4000 Series, NN46251-510.
Multicast and VRF-Lite
You can configure multicast routing support with the Virtual Routing and Forwarding (VRF) Lite
feature. This feature is known as multicast virtualization.
Multicast virtualization enables multiple VRF routing instances on devices and supports various
unicast routing protocols so that you can provide the services of many virtual routers from one
physical device.
VRF-Lite configurations support IGMP.
Multicast virtualization provides support for:
• Virtualization of control and data plane
• Multicast routing table managers (MRTM)
• Virtualized IGMPv1, v2, and v3
• Support for overlapping multicast address spaces
• Support for the Global Router (VRF0)
Multicast and MultiLink Trunking considerations
Multicast traffic distribution is important because the bandwidth requirements can be substantial
when a large number of streams are employed. Avaya Virtual Services Platform 4000 Series can
distribute IP multicast streams over links of a multilink trunk using the following method.
104 Network Design Reference for Avaya VSP 4000 Series December 2014
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