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Prerequisites for SSM Channel Based Filtering for Multicast
Boundaries
IP multicast is enabled on the device using the tasks described in the "Configuring Basic IP Multicast" module
of the IP Multicast: PIM Configuration Guide.
Information About the SSM Channel Based Filtering for
Multicast Boundaries Feature
Rules for Multicast Boundaries
The SSM Channel Based Filtering for Multicast Boundaries feature expands the ip multicast boundary
command for control plane filtering support. More than one ip multicast boundary command can be applied
to an interface.
The following rules govern the ip multicast boundary command:
•
One instance of the in and out keywords can be configured on an interface.
•
The in and out keywords can be used for standard or extended access lists.
•
Only standard access lists are permitted with the use of the filter-autorp keyword or no keyword.
•
A maximum of three instances of a command will be allowed on an interface: one instance of in, one
instance of out, and one instance of filter-autorp or no keyword.
•
When multiple instances of the command are used, the filtering will be cumulative. If a boundary
statement with no keyword exists with a boundary statement with the inkeyword, both access lists will
be applied on the in direction and a match on either one will be sufficient.
•
All instances of the command apply to both control and data plane traffic.
•
Protocol information on the extended access list is parsed to allow reuse and filtering for consistency.
An (S,G) operation will be filtered by an extended access list under all conditions stated above for
keywords if the access list filters (S,G) traffic for all protocols.
Related Topics
Configuring Multicast Boundaries, on page 373
Configuring the Multicast Boundaries Permitting and Denying Traffic Example, on page 375
Configuring the Multicast Boundaries Permitting Traffic Example, on page 375
Configuring the Multicast Boundaries Denying Traffic Example, on page 375
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
372 OL-32598-01
IP Multicast Optimization: SSM Channel Based Filtering for Multicast
Prerequisites for SSM Channel Based Filtering for Multicast Boundaries
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