◦
vrf
vrf_name
◦
address-family ipv4
◦
rpf topology route-policy
rosen_mvpn_mldp
For each profile, a different route-policy is configured.
•
Configuring route-policy
◦
route-policy
rosen_mvpn_mldp
◦
set core-tree
tree-type
◦
pass
◦
end-policy
For profile 1 (MLDP Rosen), the mldp-rosen core tree type and for profile 4/5 (MS- PMSI with BGP-AD),
the mldp-partitioned-mp2mp/p2mp core tree type are configured.
The configuration of the above procedures depends on the profile used for each configuration. For detailed
examples of each profile, see
Configuring LSM based MLDP: Examples, on page 180
.
Note
Multipoint Label Distribution Protocol Route Policy Map
Multicast supports Multipoint Label Distribution Protocol Route Policy Map, wherein Multipoint Label
Distribution Protocol uses the route policy maps to filter Label Mappings and selectively apply the configuration
features on Cisco IOS-XR operating system.
Route policy map for configuration commands:
The route policy map for the configuration commands provide you the flexibility to selectively enable some
of the mLDP features such as Make Before Break (MBB), Multicast only FRR (MoFRR) features, and so on,
on the applicable LSPs. Features like Make Before Break (MBB), Multicast only FRR (MoFRR), etc. can be
enabled on mLDP on IOS-XR operating system. When each of these features are enabled, they are enabled
for all of the mLDP Labeled-Switched Paths (LSPs) irrespective of whether they are applicable for the particular
LSP or not. For example, MoFRR is used for IPTV over mLDP in-band signaled P2MP LSPs, but not for the
generic MVPN using a MP2MP LSPs. Using the route policy map, you can configure mLDP to to selectively
enable some of the features.
Route policy for label mapping filtering:
The route policy map for the Label Mapping filtering provides a way to prevent the mLDP from crossing over
from one plane to another in the event of a failure.
Generally, the LSPs based on mLDP are built on unicast routing principle, and the LSPs follow unicast routing
as well. However, some networks are built on the concept of dual-plane design, where an mLDP LSP is created
in each of the planes to provide redundancy. In the event of a failure, mLDP crosses over to another plane.
To prevent mLDP from crossing over, mLDP Label Mappings are filtered either in an inbound or outbound
direction.
mLDP uses the existing RPL policy infrastructure in IOS-XR. With the existing RPL policy, mLDP FECs
are created and compared with the real mLDP FEC for filtering and configuration commands. (To create
Cisco IOS XR Multicast Configuration Guide for the Cisco CRS Router, Release 5.2.x
41
Implementing Multicast Routing on Cisco IOS XR Software
Multipoint Label Distribution Protocol Route Policy Map