The interface will ignore requests to join any group/source pair that is not included in the extended access list with a list index corresponding to the value configured for this object. If the value of this object is 0, no requests are ignored as a result of this object. This object deprecates the dcmgmdRouterInterfaceAllowSSMList object. If both of these (S,G) filters are set to non-zero values, then both take effect for SSM groups - that is, a request to join an SSM group/source pair is only accepted if it passes through both filters. If both this object and the dcmgmdRouterInterfaceAllowASMList object are set to non-zero values, then a request to join an ASM group/source pair is only accepted if it passes through both filters.