Configure Multicast Routes

Configuring static multicast routes lets you separate multicast traffic from unicast traffic. For example, when a path between a source and destination does not support multicast routing, the solution is to configure two multicast devices with a GRE tunnel between them and to send the multicast packets over the tunnel.

When using PIM, the threat defense device expects to receive packets on the same interface where it sends unicast packets back to the source. In some cases, such as bypassing a route that does not support multicast routing, you may want unicast packets to take one path and multicast packets to take another.

Static multicast routes are not advertised or redistributed.

Procedure

Step 1

Choose Devices > Device Management, and edit the threat defense device.

Step 2

Choose Routing > Multicast Routing > Multicast Routes > Add or Edit.

Use the Add Multicast Route Configuration dialog box to add a new multicast route to the threat defense device. Use the Edit Multicast Route Configuration dialog box to change an existing multicast route.

Step 3

From the Source Network drop-down box, choose an existing network or click Add (add icon) to add a new one. See Creating Network Objects for the procedure.

Step 4

To configure an interface to forward the route, click Interface and configure the following options:

  • From the Source Interface drop-down list, choose the incoming interface for the multicast route.

  • From the Output Interface/Dense drop-down list, choose the destination interface that the route is forwarded through.

  • In the Distance field, enter the distance of the multicast route. The range is 0 to 255.

Step 5

To configure an RPF address to forward the route, click Address and configure the following options:

  • In the RPF Address field, enter the IP address for the multicast route.

  • In the Distance field, enter the distance of the multicast route The range is 0 to 255.

Step 6

Click OK to save the multicast routes configuration.