Cisco CRS Configuration Guide

Mid-point
Specifies the transit node in which LSP signaling is processed (for example, not a source or receiver).
Receiver, Leaf, and Destination
Specifies the node in which LSP signaling ends.
Branch Point
Specifies the node in which packet replication is performed.
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
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P2MP RSVP-TE (RFC 4875) is supported. RFC 4875 is based on nonaggregate signaling; for example,
per S2L signaling. Only P2MP LSP is supported.
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interface tunnel-mte command identifies the P2MP interface type .
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P2MP tunnel setup is supported with label replication.
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Fast-Reroute (FRR) 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.
Per-S2L reoptimization is not supported.Note
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IPv4 and IPv6 payloads are supported.
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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
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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.
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
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Implementing MPLS Traffic Engineering
Point-to-Multipoint Traffic-Engineering

Cisco CRS Specifications

General

Operating System	Cisco IOS XR
Product Type	Core Router
Form Factor	Modular Chassis
Dimensions	Varies by chassis type
Weight	Varies by chassis type
Architecture	Distributed
Switch Fabric	Multi-stage
Interface Support	Ethernet, SONET/SDH, OTN
Interfaces/Ports	Varies by line card
Port Density	Varies by line card
Routing Protocol	BGP, IS-IS, OSPF, MPLS
Management	CLI, SNMP
Power Supply	Redundant, hot-swappable
Cooling	Redundant, Hot-swappable Fan Trays
Supported Protocols	IPv4, IPv6, MPLS
Management Interfaces	Ethernet, console
Security Features	ACLs