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ME60 V800R010C10SPC500 Feature Description - IP Multicast 01

This is ME60 V800R010C10SPC500 Feature Description - IP Multicast
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Multicast NSR

Multicast NSR

Multicast non-stop routing (NSR) provides board-level reliability to prevent a main control board failure from causing multicast service interruptions.

Background

IP multicast services, such as Internet Protocol Television (IPTV), video conference, and e-learning, have high requirements for network reliability; therefore, it is important that a main control board failure does not interrupt multicast services. Multicast NSR resolves this issue by means of real-time data backup and master/slave main control board switchovers. Associated devices do not detect the switchovers, so services are not interrupted.

NOTE:
To implement multicast NSR, a multicast device must have two main control boards: one master and one slave.

Implementation

Multicast NSR is implemented by synchronizing multicast data from the master main control board to the slave main control board and by switching services to the slave main control board if the master main control board fails. The multicast data includes information about neighbor relationships, MDTs, RP-Set, and user access.

Multicast NSR implements the following functions:

  1. Batch backup

    When the slave main control board starts, the master main control board synchronizes multicast data to the slave main control board.

  2. Real-time backup

    The master main control board synchronizes multicast data to the slave main control board in real time.

  3. Master/slave main control board switchover

    If the master main control board fails, the slave main control board takes over services. The master and slave main control boards have the same multicast data, so the multicast services will not be interrupted.

NOTE:

For details about NSR, see "Uninterruptible Service Technology" in Feature Description - Reliability.

Usage Scenario

Multicast NSR applies to networks that have high reliability requirements, such as a backbone network.

NOTE:
The following protocols support multicast NSR:
  • Protocol Independent Multicast-Sparse Mode (PIM-SM)

  • Protocol Independent Multicast-Source-Specific Multicast (PIM-SSM)

  • IPv6 PIM-SM

  • IPv6 PIM-SSM

  • Multicast Virtual Private Network (MVPN)

  • Multicast Source Discovery Protocol (MSDP)

  • Internet Group Management Protocol (IGMP)

  • Multicast Listener Discovery (MLD)

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Updated: 2019-01-04

Document ID: EDOC1100059456

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