About this guide

This guide provides an overview of multicast routing concepts and provides configuration examples for Internet Group Management Protocol (IGMP), Multicast Listener Discovery (MLD), and Protocol Independent Multicast (PIM).

Note:

The multicast feature is supported on 7250 IXR Gen 2, 7250 IXR Gen 2c+, 7730 SXR and 7220 IXR-Dx platforms.

On the 7250 IXR Gen 2 and 7250 IXR Gen 2c+ platforms, the protocols are available only on the default network instance. On the 7730 SXR and 7220 IXR-Dx platforms, they are available for both default and non-default network instances.

The feature supports IGMP versions 1, 2, and 3 with SSM-translation for v1 and v2, PIM-SM IPv4/IPv6 with Source-Specific Multicast (SSM), and IPv6 MLDv1 with SSM-translation and MLDv2.

Note:

This manual covers the current release and may also contain some content that will be released in later maintenance loads. See the SR Linux Release Notes for information about features supported in each load.

Configuration and command outputs shown in this guide are examples only; actual displays may differ depending on supported functionality and user configuration.

Precautionary and information messages

The following are information symbols used in the documentation.

DANGER: Danger warns that the described activity or situation may result in serious personal injury or death. An electric shock hazard could exist. Before you begin work on this equipment, be aware of hazards involving electrical circuitry, be familiar with networking environments, and implement accident prevention procedures.
WARNING: Warning indicates that the described activity or situation may, or will, cause equipment damage, serious performance problems, or loss of data.
Caution: Caution indicates that the described activity or situation may reduce your component or system performance.
Note: Note provides additional operational information.
Tip: Tip provides suggestions for use or best practices.

Conventions

Nokia SR Linux documentation uses the following command conventions.

  • Bold type indicates a command that the user must enter.

  • Input and output examples are displayed in Courier text.

  • An open right-angle bracket indicates a progression of menu choices or simple command sequence (often selected from a user interface). Example: start > connect to.

  • A vertical bar (|) indicates a mutually exclusive argument.

  • Square brackets ([ ]) indicate optional elements.

  • Braces ({ }) indicate a required choice. When braces are contained within square brackets, they indicate a required choice within an optional element.

  • Italic type indicates a variable.

Generic IP addresses are used in examples. Replace these with the appropriate IP addresses used in the system.