Cisco ASA 5505 Configuration Manual page 457

Chapter 24 Configuring Multicast Routing
In the main ASDM window, choose Configuration > Device Setup > Routing > Multicast > IGMP >
Step 1
Join Group.
The Join Group pane appears.
Choose Add or Edit.
Step 2
The Add IGMP Join Group dialog box allows you to configure an interface to be a member of a multicast
group. The Edit IGMP Join Group dialog box to change existing membership information.
In the Interface Name field, choose the interface name from the drop-down list. If you are editing an
Step 3
existing entry, you cannot change this value.
In the Multicast Group Address field, enter the address of a multicast group that the interface belongs
Step 4
to. The group address must be from 224.0.0.0 to 239.255.255.255.
Step 5 Click OK.
Configuring a Statically Joined IGMP Group
Sometimes a group member cannot report its membership in the group because of some configuration,
or there may be no members of a group on the network segment. However, you still want multicast traffic
for that group to be sent to that network segment. You can have multicast traffic for that group sent to
the segment by configuring a statically joined IGMP group.
From ASDM, use the Configuration > Routing > Multicast > IGMP > Static Group pane to configure
the adaptive security appliance to be a statically connected member of a group. With this method, the
adaptive security appliance does not accept the packets itself, but only forwards them. Therefore, this
method allows fast switching. The outgoing interface appears in the IGMP cache, but itself is not a
member of the multicast group.
To configure a statically joined multicast group on an interface, perform the following steps:
In the main ASDM window, choose Configuration > Device Setup > Routing > Multicast > IGMP >
Step 1
Static Group.
The Static Group pane appears.
Choose Add or Edit.
Step 2
Use the Add IGMP Static Group dialog box to statically assign a multicast group to an interface. Use the
Edit IGMP Static Group dialog box to change existing static group assignments.
In the Interface Name field, choose the interface name from the drop-down list. If you are editing an
Step 3
existing entry, you cannot change this value.
In the Multicast Group Address field, enter the address of a multicast group that the interface belongs
Step 4
to. The group address must be from 224.0.0.0 to 239.255.255.255.
Click OK.
Step 5
OL-20339-01
Cisco ASA 5500 Series Configuration Guide using ASDM
Customizing Multicast Routing
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