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Configuration Guide - IP Multicast

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.
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Setting the Aging Time of Dynamic Router Ports

Setting the Aging Time of Dynamic Router Ports

Context

A router port sends IGMP Report/Leave messages to an upstream Layer 3 device and receives multicast packets from the upstream device. When IGMP snooping is enabled on a device, the device can learn entries of the dynamic router port to monitor multicast data transmission. When network congestion or flapping occurs, the dynamic router port does not receive General IGMP Query or Protocol Independent Multicast (PIM) Hello messages before it times out. The switch deletes the interface from the router port list, which may cause service interruption. To avoid this problem, set a longer aging time.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run igmp snooping router-aging-time router-aging-time

    The aging time is set for dynamic router ports.

    By default, the aging time of router ports that the switch learns from General IGMP Query messages is 180 seconds. By default, the aging time of router ports that the switch learns from PIM Hello messages is the Holdtime value in PIM Hello messages.

  4. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100075361

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