Cisco XR12000 Series Configuration Manual page 13

Implementing Multicast Routing on Cisco IOS XR
Software
Multicast routing is a bandwidth-conserving technology that reduces traffic by simultaneously delivering
a single stream of information to potentially thousands of corporate recipients and homes. Applications that
take advantage of multicast routing include video conferencing, corporate communications, distance learning,
and distribution of software, stock quotes, and news.
This document assumes that you are familiar with IPv4 and IPv6 multicast routing configuration tasks and
concepts for Cisco IOS XR Software .
Multicast routing allows a host to send packets to a subset of all hosts as a group transmission rather than to
a single host, as in unicast transmission, or to all hosts, as in broadcast transmission. The subset of hosts is
known as group members and are identified by a single multicast group address that falls under the IP Class
D address range from 224.0.0.0 through 239.255.255.255.
For detailed conceptual information about multicast routing and complete descriptions of the multicast routing
commands listed in this module, you can refer to the
documentation for other commands that might appear in the course of executing a configuration task, search
online in the Cisco IOS XR Commands Master List for the Cisco XR 12000 Series Router.
Feature History for Configuring Multicast Routing on the Cisco XR 12000 Series Routers
Release
Release 3.2
Release 3.5.0
Release 3.7.0
OL-30405-02
Modification
This feature was introduced.
Multicast VPNv4 was supported.
The following new features or functionality were added:
Cisco IOS XR Multicast Configuration Guide for the Cisco XR12000 Series Router, Release 5.1.x
C H A P T E R
Related Documents, on page
• Multicast VPNv4 support was extended to include multicast
VPNv6 address family.
• Support was added for multitopology routing within a
default VRF table.
• A new configuration procedure was added for calculating
rate per route.
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