Multicast Vlan Registration (Mvr); Introduction - Nokia ESB26 User Manual

21. Multicast VLAN Registration
(MVR)

Introduction

MVR (Multicast VLAN Registration) is designed to serve two purposes:
•
To enable efficient, secure multicast data flow across VLANs in a simple
configuration.
• To support dynamic join to multicast groups, in order to enable channel
zapping.
This will allow you to support multicast services, while keeping the user security provided by
the VLAN and features. Users on different VLANs cannot exchange any information between
them, but multicast services are provided.
A maximum of 256 MVR multicast groups can be configured on a switch.
Any multicast data sent to a configured multicast address is sent to all receiver ports that have
registered to receive data on that multicast address, even if the source and receiver ports are
on different VLANs.
The device can force the multicast server to send all the configured multicast frames to the
switch, to allow quick zapping.
NOTES 1. To enable MVR, you must first enable IGMP snooping, using the ip igmp snooping
command, described in IGMP Snooping Commands.
2. The IP address range from 224.0.0.0 to 239.255.255.255 is reserved for multicast host
groups.
An example of an MVR configuration is shown in Figure 21-1.
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