Enabling IPv4 Multicast Routing Over a GRE Tunnel
This section describes how to enable IPv4 multicast protocols, PIM Sparse (PIM-SM) and PIM Dense (PIM-DM), on a GRE tunnel. Perform the procedures in this section after completing the “Configuring IP GRE tunnels” task.
For an overview of multicast routing support over a GRE tunnel, refer to Support for IPv4 multicast routing over GRE tunnels.
Note: ICX 7150 devices do not support tunnels. This task is not supported for ICX 7150 devices.
Enabling PIM-SM on a GRE Tunnel
To enable PIM-SM on a GRE tunnel interface, use the
ip pim-sparse command in tunnel interface mode.
device(config)# interface tunnel 10 device(config-tnif-10)# ip pim-sparse
Enabling PIM-DM on a GRE Tunnel Interface
To enable PIM-DM on a GRE tunnel interface, use the
ip pim command in tunnel interface mode.
device(config)# interface tunnel 10 device(config-tnif-10)# ip pim