1. Getting Started

1.1. About This Guide

This guide describes multicast routing protocols, troubleshooting, and proprietary entities and presents configuration and implementation examples.

This document is organized into functional chapters and provides concepts and descriptions of the implementation flow, as well as Command Line Interface (CLI) syntax and command usage.

The topics and commands described in this document apply to the:

7450 ESS
7750 SR
7950 XRS

Table 1 lists the available chassis types for each SR OS router.

Table 1: Supported SR OS Router Chassis Types

7450 ESS	7750 SR	7950 XRS
7450 ESS-7/12 running in standard mode (not mixed-mode)	7450 ESS-7/12 running in mixed-mode (not standard mode) 7750 SR-a4/a8 7750 SR-c4/c12 7750 SR-1e/2e/3e 7750 SR-7/12 7750 SR-12e	7950 XRS-16c 7950 XRS-20/40

For a list of unsupported features by platform and chassis, refer to the SR OS R15.0.Rx Software Release Notes, part number 3HE 12060 000x TQZZA.

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

Note:

This guide generically covers Release 15.0 content and may contain some content that will be released in later maintenance loads. Please refer to the SR OS R15.0.Rx Software Release Notes, part number 3HE 12060 000x TQZZA, for information on features supported in each load of the Release 15.0 software.

1.2. Multicast Configuration Process

Table 2 lists the tasks necessary to configure multicast protocols. This guide is presented in an overall logical configuration flow. Each section describes a software area and provides CLI syntax and command usage to configure parameters for a functional area.

Table 2: Configuration Process

Area	Task	Chapter	Support Platform
Multicast protocol configuration	Describes multicast overview and models.	Introduction to Multicast	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Internet Group Management Protocol.	IGMP	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Multicast Listener Discovery.	MLD	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Protocol Independent Multicast.	PIM	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Multicast Source Discovery Protocol.	MSDP	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Multicast Label Distribution Protocol.	MLDP	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Multicast Extensions to BGP.	Multicast Extensions to BGP	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
	Configure Multicast Connection Admission Control.	MCAC	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
Troubleshooting	Use Mtrace, Mstat, and Mrinfo, and show commands for troubleshooting.	Troubleshooting Tools	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.
Reference	List of IEEE, IETF, and other proprietary entities.	Standards and Protocol Support	Supported on 7450 ESS in mixed-mode, 7750 SR and 7940 XRS. Not supported on the 7450 ESS in standard mode.