Point-to-Multipoint LSP Properties

The following are some of the properties of point-to-multipoint LSPs:

• A point-to-multipoint LSP allows you to use MPLS for point-to-multipoint data distribution. This functionality is similar to that provided by IP multicast.
• You can add and remove branch LSPs from a main point-to-multipoint LSP without disrupting traffic. The unaffected parts of the point-to-multipoint LSP continue to function normally.
• You can configure a node to be both a transit and an outbound (egress) router for different branch LSPs of the same point-to-multipoint LSP.
• You can enable link protection on a point-to-multipoint LSP. Link protection can provide a bypass LSP for each of the branch LSPs that make up the point-to-multipoint LSP. If any of the primary paths fails, traffic can be quickly switched to the bypass.
• You can configure sub-paths either statically or dynamically.
• You can enable graceful restart on point-to-multipoint LSPs.