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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Configure multicast routing

Configuring multicast routing is a two-step process that involves configuring multicast routing and enabling PIM sparse mode (PIM-SM) on a Layer 3 (L3) interface. The following procedure describes how to configure multicast routing.

For more information about IGMP and PIM feature configurations, see Internet Group Management Protocol and Protocol Independent Multicast.

NOTE

Multicast flood restrict feature is enabled by default. To ensure that no traffic drops occur, Dell EMC recommends that you do one of the following:

  • Disable IGMP snooping on the VLAN between two PIM routers that do not have IGMP receivers on that VLAN.
  • Configure the interface between the PIM routers as static mrouter port.
  1. Enable multicast routing for IPv4 networks.
    OS10# configure terminal
OS10(config)# ip multicast-routing
  2. Configure an IP address to a VLAN interface.
    OS10(config)# interface vlan 2
OS10(conf-if-vl-2)# ip address 1.1.1.2/24
  3. Enable PIM sparse mode on an L3 interface.
    OS10(config)# interface vlan 2
OS10(conf-if-vl-2) ip pim sparse-mode
  4. From CONFIGURATION mode, configure the rendezvous point (RP) IP address statically and specify the multicast group address range. The RP IP address should be reachable across the PIM domain.
    OS10(config)# ip pim rp-address 171.1.1.1 group-address 225.1.1.3/32

    Configure the RP address and multicast group address on all nodes in your network.

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