nodetool getstreamthroughput 

Provides the Mb per second outbound throughput limit for streaming in the system.

Provides the Mb (megabit) per second outbound throughput limit for streaming in the system.

Synopsis 

$ nodetool <options> getstreamthroughput
Options
Short Long Description
-h --host Hostname or IP address.
-p --port Port number.
-pwf --password-file Password file path.
-pw --password Password.
-u --username Remote JMX agent username.
-- Separates an option from an argument that could be mistaken for a option.