Before You Begin; Configuring The Switching Fabric Bandwidth; Enabling Ipv6 Multicast; Defining Static Routes For Reverse-Path Forwarding - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - MULTICAST ROUTING CONFIGURATION GUIDE 2010-10-07 Configuration Manual

JunosE 11.3.x Multicast Routing Configuration Guide

Before You Begin

Configuring the Switching Fabric Bandwidth

Enabling IPv6 Multicast

ipv6 multicast-routing

Defining Static Routes for Reverse-Path Forwarding

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A " traceroute" Facility for IP Multicast—draft-ietf-idmr-traceroute-ipm-07.txt (January
2001 expiration)
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.
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.
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.
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.
Use the ipv6 rpf-route command to define reverse-path forwarding (RPF) to verify that
a router receives a multicast packet on the correct incoming interface.
Copyright © 2010, Juniper Networks, Inc.