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Cisco ASDM User Guide
OL-16647-01
Chapter 12 Configuring Multicast Routing
PIM
Multicast Group
Multicast groups are lists of access rules that define which multicast addresses are part of the group. A
multicast group can contain a single multicast address or a range of multicast addresses. Use the Add
Multicast Group dialog box to create a new multicast group rule. Use the Edit Multicast Group dialog
box to modify an existing multicast group rule.
Fields
• Action—Choose “Permit” to create a group rule that allows the specified multicast addresses;
choose “Deny” to create a group rule that filters the specified multicast addresses.
• Multicast Group Address—Enter the multicast address associated with the group.
• Netmask—Enter or choose the network mask for the multicast group address.
Modes
The following table shows the modes in which this feature is available:
Request Filter
When the security appliance is acting as an RP, you can restrict specific multicast sources from
registering with it. This prevents unauthorized sources from registering with the RP. The Request Filter
pane lets you define the multicast sources from which the security appliance will accept PIM register
messages.
Fields
• Multicast Groups—Displays the request filter access rules.
The table entries are processed from the top down. You can create an entry that includes a range of
multicast groups but excludes specific groups within that range by placing deny rules for the specific
groups at the top of the table and the permit rule for the range of multicast groups below the deny
statements.
Double-click an entry to open the Request Filter Entry dialog box for the selected entry.
–
Action—Displays “Permit” if the multicast source is allowed to register or “deny” if the
multicast source is excluded.
–
Source—Displays the address of the source of the register message.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • ——
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • ——