PROTOCOLS(5)             Series 300 Only             PROTOCOLS(5)

     NAME
          protocols - protocol name data base

     HP-UX COMPATIBILITY
          Level:    HP-UX/NON-STANDARD

          Origin:   UCB

          Remarks:  Implemented on the Series 300 only.

     DESCRIPTION
          This file associates protocol numbers with official protocol
          names  and  aliases.   That  allows  the  user to refer to a
          protocol by a mneumonic name instead of a number.  For  each
          protocol  a single line should be present with the following
          information:

               <official protocol name> <protocol number> <aliases>

          Aliases are other names under which  the  protocol  is  also
          known.  For example:

               tcp  6    TCP

          So, in this example, the library call getprotobyname can  be
          invoked as:

               p = getprotobyname("TCP");

          instead of

               p = getprotobyname("tcp");

          Both will produce the same results.

          A line cannot start with a space.  Items  are  separated  by
          any number of blanks and/or tab characters.  A `#' indicates
          the beginning of a comment; characters up to the end of  the
          line are not interpreted by routines which search the file.

          Protocol names may contain  any  printable  character  other
          than a white space, newline, or comment character.  Trailing
          blanks or tabs are allowed at the end of a line.

     EXAMPLES
          tcp  6    TCP  # transmission control protocol
          udp  17   UDP  # user datagram protocol

     SEE ALSO
          getprotoent(3N).

     Hewlett-Packard               - 1 -             (printed 7/16/86)