Cisco ASR 9000 Series Configuration Manual page 157

Implementing MPLS Traffic Engineering
Receiver, Leaf, and Destination
Specifies the node in which LSP signaling ends.
Branch Point
Specifies the node in which packet replication is performed.
Bud Node
Specifies the node that not only acts as a transit for some S2Ls but also acts as a termination point for
a S2L of a P2MP TE tunnel.
Source-to-Leaf (S2L) SubLSP
Specifies the P2MP-TE LSP segment that runs from the source to one leaf.
Point-to-Multipoint Traffic-Engineering Features
• P2MP RSVP-TE (RFC 4875) is supported. RFC 4875 is based on nonaggregate signaling; for example,
per S2L signaling. Only P2MP LSP is supported.
• interface tunnel-mte command identifies the P2MP interface type.
• P2MP tunnel setup is supported with label replication.
• Fast-Reroute (FRR) link protection is supported with sub-50 msec for traffic loss.
• Explicit routing is supported by using under utilized links.
• Reoptimization is supported by calculating a better set of paths to the destination with no traffic loss.
• IPv4 and IPv6 payloads are supported.
• IPv4 and IPv6 multicast forwarding are supported on a P2MP tunnel interface through a static IGMP
and MLD group configuration.
• Both IP multicast and P2MP Label Switch Multicast (LSM) coexist in the same network; therefore, both
use the same forwarding plane (LFIB or MPLS Forwarding Infrastructure [MFI]).
• P2MP label replication supports only Source-Specific Multicast (SSM) traffic. SSM configuration
supports the default value, none.
• Static mapping for multicast groups to the P2MP-TE tunnel is required.
Point-to-Multipoint Traffic-Engineering Benefits
• Single point of traffic control ensures that signaling and path engineering parameters (for example,
protection and diversity) are configured only at the TE source node.
• Ability to configure explicit paths to enable optimized traffic distribution and prevention of single point
of failures in the network.
• Link protection of MPLS-labeled traffic traversing branch paths of the P2MP-TE tree.
OL-28381-02
Per-S2L reoptimization is not supported.
Note
Cisco ASR 9000 Series Aggregation Services Router MPLS Configuration Guide, Release 4.3.x
Point-to-Multipoint Traffic-Engineering
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