4.14.4 ‘Terminal speeds’

The Telnet, Rlogin, and SSH protocols allow the client to specify terminal speeds to the server.

This parameter does not affect the actual speed of the connection, which is always ‘as fast as possible’; it is just a hint that is sometimes used by server software to modify its behaviour. For instance, if a slow speed is indicated, the server may switch to a less bandwidth-hungry display mode.

The value is usually meaningless in a network environment, but PuTTY lets you configure it, in case you find the server is reacting badly to the default value.

The format is a pair of numbers separated by a comma, for instance, 38400,38400. The first number represents the output speed (from the server) in bits per second, and the second is the input speed (to the server). (Only the first is used in the Rlogin protocol.)

This option has no effect on Raw connections.