nodetool setstreamthroughput 

Sets the throughput capacity in Mb for outbound streaming in the system, or disables throttling.

Sets the throughput capacity in Mb (megabits) for streaming in the system, or disables throttling.

Synopsis 

$ nodetool <options> setstreamthroughput -- <value_in_mb>
DataStax Enterprise 5.0 Installer No-Services and tarball installations:
installation_location/resources/cassandra/bin
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.
value_in_mb Throughput capacity in megabits per second for streaming. To disable, set to 0.
-- Separates an option from an argument that could be mistaken for a option.

Description 

Set value_in_mb to 0 to disable throttling.