References; Before You Begin; Configuring The Switching Fabric Bandwidth; Enabling Ipv6 Multicast - Juniper JUNOSE 11.0.X MULTICAST ROUTING Configuration Manual

JUNOSe 11.0.x Multicast Routing Configuration Guide

References

For more information about IPv6 multicast, see the following resource:

Before You Begin

You can configure multicast on IPv4 and IPv6 interfaces.
For information about configuring IP interfaces, see Configuring IP in the JUNOSe IP,
IPv6, and IGP Configuration Guide. For information about configuring IPv6 interfaces,
see Configuring IPv6 in JUNOSe IP, IPv6, and IGP Configuration Guide.
For information about configuring multicast on IPv4 interfaces, see "Configuring
IPv4 Multicast" on page 3.

Configuring the Switching Fabric Bandwidth

By default, the switch fabric for the ERX1440, ERX310, E120, and E320 Broadband
Services Routers uses a bandwidth weighting ratio of 15:2 for multicast-to-unicast
weighted round robin (WRR). In the absence of strict-priority traffic, and when both
unicast and multicast traffic compete for switch fabric bandwidth, the switch fabric
allocates 15/17ths of the available bandwidth to multicast traffic and 2/17ths of the
available bandwidth to unicast traffic.
You can use the fabric weights command to change the ratio for multicast to unicast
traffic on the router switch fabric. For more information about the fabric weights
command, see Managing the System in the JUNOSe System Basics Configuration Guide.

Enabling IPv6 Multicast

In this implementation, IPv6 multicast works on VRs. By default, IPv6 multicast is
disabled on a VR. To enable IPv6 multicast on a VR, access the context for a VR, and
then issue the ipv6 multicast-routing command.
ipv6 multicast-routing
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References
A " traceroute" Facility for IP Multicast draft-ietf-idmr-traceroute-ipm-07.txt
(January 2001 expiration)
Use to enable IPv6 multicast routing on the VR.
By default, IPv6 multicast is disabled on the VR. In the disabled state, all multicast
protocols are disabled, and the VR forwards no multicast packets.
Example
host1(config)#ipv6 multicast-routing
Use the no version to disable IPv6 multicast routing on the VR (the default).
See ipv6 multicast-routing.