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Configuration Guide - IP Multicast

S7700 and S9700 V200R010C00

This document describes IP multicast basics and how to configure IP multicast features, including IGMP/MLD, PIM (IPv4&IPv6), MSDP, multicast VPN, Layer 3 multicast CAC, Layer 2 multicast CAC, IGMP/MLD snooping, and multicast VLAN, IPv4&IPv6 multicast route management, static multicast MAC address, multicast network.
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(Optional) Configuring a Multicast Source Lifetime

(Optional) Configuring a Multicast Source Lifetime


An IGMP proxy-capable switch starts a timer for each (S, G) entry. A multicast source lifetime is the timeout period of an (S, G) entry generated by the IGMP proxy-capable switch.

The IGMP proxy-capable switch starts a timer upon receiving the first multicast data packet for group G from source S. The switch resets the timer each time it receives a multicast packet sent from source S. If the switch does not receive any multicast packet from source S within the lifetime of the source S, the switch determines that source S has stopped sending multicast data to group G and the (S, G) entry has become invalid.


  1. Run:


    The system view is displayed.

  2. Run:

    igmp [ vpn-instance vpn-instance-name ]

    The IGMP view is displayed.

  3. Run:

    proxy source-lifetime interval

    A multicast source lifetime is configured.

    The default multicast source lifetime is 210s.

Updated: 2019-08-21

Document ID: EDOC1000141903

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