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NE40E V800R010C00 Configuration Guide - MPLS 01

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Configuring P2MP TE Tunnels

Configuring P2MP TE Tunnels

A P2MP TE tunnel provides sufficient network bandwidth and high reliability for multicast service transmission on an IP/MPLS backbone network.

Usage Scenario

The demand for multicast services, such as IPTV, multimedia conferences, and massively multiplayer online role-playing games (MMORPGs), has steadily increased on IP/MPLS backbone networks. These services require sufficient network bandwidth, assured quality of service (QoS), and high reliability. The following multicast solutions are available, but are insufficient for the requirements of multicast services or network carriers:
  • IP multicast technology: deployed on a live P2P network with upgraded software. This solution reduces upgrade and maintenance costs. IP multicast, similar to IP unicast, does not support QoS or TE capabilities and has low reliability.
  • Dedicated multicast network: deployed using asynchronous transfer mode (ATM) or synchronous optical network (SONET)/synchronous digital hierarchy (SDH) technologies. This solution provides high reliability and transmission rates, but has high construction costs and requires separate maintenance.
IP/MPLS backbone network carriers require a multicast solution that has high TE capabilities and can be implemented by upgrading existing devices.

P2MP TE is such a solution. It provides high reliability and QoS as well as TE capabilities. P2MP TE can be implemented on an IP/MPLS backbone network by simple configuration to provide multicast services, which reduces upgrade and maintenance costs and helps network convergence.

P2MP TE tunnels can be manually or automatically established. Table 3-4 compares manual P2MP tunnels with automatic P2MP TE tunnels.
Table 3-4  Comparison between manual and automatic P2MP TE tunnels


Manual P2MP TE Tunnel

Automatic P2MP TE Tunnel

Trigger method

Manually triggered by users.

Automatically triggered by services.

Usage scenario

Multicast services, excluding NG MVPN or multicast VPLS, are transmitted.

NG MVPN or multicast VPLS services are transmitted.

Traffic import method

PIM or static IGMP is used to direct services to LSPs.

Services are automatically directed to LSPs.

Pre-configuration Tasks

Before configuring P2MP TE tunnels, complete the following tasks:

Configuration Procedures

Figure 3-5  Flowchart for configuring P2MP TE tunnels
Updated: 2018-07-12

Document ID: EDOC1100028530

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