Configuring Label Switched Multicast
Deployment of an LSM MLDP-based MVPN involves configuring a default MDT and one or more data
MDTs. A static default MDT is established for each multicast domain. The default MDT defines the path
used by PE routers to send multicast data and control messages to other PE routers in the multicast domain.
A default MDT is created in the core network using a single MP2MP LSP.
An LSP MLDP-based MVPN also supports dynamic creation of the data MDTs for high-bandwidth
transmission. For high-rate data sources, a data MDT is created using the P2MP LSPs to off-load the traffic
from the default MDT to avoid unnecessary waste of bandwidth to PEs that are not part of the stream. You
can configure MLDP MVPN for both the intranet or extranet. This configuration section covers the rosen
based MLDP profile. For configuration examples of other MLDP profiles, see Configuring LSM based MLDP:
Examples, on page 180.
Before configuring MLDP based MVPN, ensure that the MPLS is enabled on the core facing interface.
For information in MPLS configuration, see Cisco IOS XR MPLS Configuration Guide. Also, ensure that
BGP and any interior gateway protocol (OSPF or ISIS) is enabled on the core router. For more information
on BGP and route-policy configuration, see Cisco IOS XR Routing Configuration Guide.
Note
Perform this task to configure label switched multicast:
Cisco IOS XR Multicast Configuration Guide for the Cisco CRS Router, Release 5.2.x
108
Implementing Multicast Routing on Cisco IOS XR Software
Configuring Multicast VPN
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