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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter29 Configuring Multicast Routing
Customizing Multicast Routing
Step7 Click OK to close this dialog box, then click Apply to save your changes.
Configuring a Static Multicast Route
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 ASA 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.
To configure a static multicast route or a static multicast route for a stub area, perform the following
steps:
Step1 In the main ASDM window, choose Configuration > Device Setup > Routing > Multicast > MRoute.
Step2 Choose Add or Edit.
The Add or Edit Multicast Route dialog box appears.
Use the Add Multicast Route dialog box to add a new static multicast route to the ASA. Use the Edit
Multicast Route dialog box to change an existing static multicast route.
Step3 In the Source Address field, enter the IP address of the multicast source. You cannot change this value
when editing an existing static multicast route.
Step4 Choose the network mask for the IP address of the multicast source from the Source Mask drop-down
list.
Step5 In the Incoming Interface area, click either the RPF Interface radio button to choose RPF to forward
the route or the Interface Name radio button, then enter the following:
•In the Source Interface field, choose the incoming interface for the multicast route from the
drop-down list.
•In the Destination Interface field, choose the destination interface that the route is forwarded
through from the drop-down list.
Note You can specify the interface or the RPF neighbor, but not both at the same time.
Step6 In the Administrative Distance field, choose the administrative distance of the static multicast route. If
the static multicast route has the same administrative distance as the unicast route, then the static
multicast route takes precedence.
Step7 Click OK.