The command 'show pim group-map' shows that the default mapping for SSM is 232.0.0.0/8. According this page you can change it:
https://supportforums.cisco.com/document/100301/introduction-ios-xr-multicast
With the "multicast-routing ssm range" command. But that command isn't available. The multicast package is active, and other multicast commands work. Has the command moved to a different spot, has something else changed?
