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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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(Optional) Configuring a Static Router Port

(Optional) Configuring a Static Router Port

Context

A router port is located on a Layer 2 device and connects to an upstream Layer 3 device (a multicast router or Layer 3 switch). When IGMP snooping is enabled in a VLAN, all interfaces in this VLAN learn forwarding entries from multicast protocol packets. When an interface receives IGMP Query messages or Protocol Independent Multicast (PIM) Hello messages, the Layer 2 device sets this interface as a dynamic router port. A router port provides the following functions:

  • Receives multicast data from the upstream device.
  • Forwards IGMP Report/Leave messages. IGMP Report/Leave messages received in a VLAN are forwarded only to router ports in the VLAN.

A dynamic router port has an aging time. If a dynamic router port does not receive an IGMP Query or a PIM Hello message before the aging time expires, the device deletes the port from the router port list. To enable an interface to forward IGMP Report/Leave messages to the upstream querier for a long time, configure the interface as a static router port.

Procedure

  1. Run system-view

    The system view is displayed.

  2. (Optional) Configure disabling of dynamic learning of router ports.
    1. Run vlan vlan-id

      The VLAN view is displayed.

    2. Run igmp snooping router-learning disable

      Dynamic router port learning is disabled.

      By default, dynamic router port learning is enabled in a VLAN.

    3. Run quit

      Exit from the VLAN view.

  3. Run interface interface-type interface-number

    The interface view is displayed.

  4. Run igmp snooping static-router-port vlan { vlan-id1 [ to vlan-id2 ] } &<1-10>

    An interface is configured as a static router port.

  5. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100075361

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