Switching To An Spt For Pim Sparse Mode; Creating Multicast Vpns; Creating Multicast Vpns Using The Default Mdt - 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

Switching to an SPT for PIM Sparse Mode

ip pim spt-threshold

Creating Multicast VPNs

Creating Multicast VPNs Using the Default MDT

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Reconfigure auto-RP mapping agents as candidate BSRs by using the ip pim
2.
bsr-candidate command.
Reconfigure auto-RP candidate RPs as BSR candidate RPs by issuing the no ip pim
3.
send-rp-announce command and then issuing the ip pim rp-candidate command.
PIM sparse mode initiates multicasting using a shared tree. You can configure PIM sparse
mode to switch to an SPT when a source starts sending multicast messages, or you can
prevent PIM sparse mode from switching to an SPT. Multicasting over an SPT might be
more efficient than multicasting over a shared tree. (See "PIM Sparse Mode" on page 82.)
Use to specify when PIM sparse mode switches from a shared tree to an SPT.
Specify a nonzero integer or the keyword infinity to prevent PIM sparse mode from
switching to an SPT.
Specify a value of 0 (default) to configure PIM to switch to an SPT when a source
starts sending multicast messages.
Example
host1(config)#ip pim spt-threshold 4
Use the no version to restore the default value, 0.
See ip pim spt-threshold.
JunosE router software provides the ability to create multicast VPNs by using GRE tunnels.
This implementation is based on Multicast in MPLS/BGP VPNs
(draft-rosen-vpn-mcast-06.txt and draft-rosen-vpn-mcast-08.txt) and further defined
by Base Specification for Multicast in MPLS/BGP VPNs
(draft-raggarwa-13vpn-2547-mvpn-00.txt).
NOTE: Although you can configure PIM sparse mode remote neighbors, you
can no longer use these remote neighbors for BGP/MPLS VPNs. For multicast
VPNs, use the functionality described in this section.
The JunosE Software supports default Multicast Distribution Trees (MDTs) and data
MDTs.
The JunosE Software does not support a single MDT command. Instead, you must
configure the multicast tunnel interfaces (MTIs) explicitly. The MTI is an IP interface that
is stacked on a GRE tunnel interface. The destination address of the GRE tunnel is the
multicast VPN (MVPN) group address of the MDT.
Copyright © 2010, Juniper Networks, Inc.