LLTUNE(1M)                                                          LLTUNE(1M)



NAME
     lltune - Sends/receives lapb or llc2 tuning parameters to/from their
     respective drivers.

SYNOPSIS
     lltune -s subnet_id -p protocol -P [-d device] [filename]

     lltune -s subnet_id -p protocol [-G] [-d device]

DESCRIPTION
     lltune is a utility which either:

          ⊕ puts a set of lapb parameters to the lapb driver,

          ⊕ gets a set of lapb parameters from the lapb driver,

          ⊕ puts a set of llc2 parameters to the llc2 driver, or

          ⊕ gets a set of llc2 parameters from the llc2 driver.

     By default, a get operation is performed.

     These parameters are on a per-subnetwork basis and thus, the subnetwork
     identifier must be specified.

     The options used in lltune are the following:

     -s subnet_id
                 subnet_id is the subnetwork to be referenced.

     -p protocol specifies the protocol being used as protocol.  This value
                 can be either lapb or llc2. This is obligatory as the tuning
                 parameters for lapb and llc2 are different.

     -G          get parameters from the lapb/llc2 (as specified by the -p
                 option) driver. These are written to the standard output.

                 Note: The -G (get) option is used as default and therefore is
                 optional when a 'get' is required.

     -P          put parameters to the lapb/llc2 driver, giving subnetwork
                 subnet_id these values.

     -d device   specify the lapb/llc2 device to be device.  For an on-board
                 system, the default lapb device is /dev/lapb0, and the
                 default llc2 device is /dev/llc20.  For an in-kernel system,
                 the default lapb device is /dev/lapb, and the default llc2
                 device is /dev/llc2.

     The filename, as used in the 'send' option, specifies the file of
     parameters to be sent (put) to LAPB or LLC2. These parameters are
     described in the manual page llc2template(4).  The values are read from



                                                                        Page 1

LLTUNE(1M)                                                          LLTUNE(1M)



     the standard input but this can be overridden by specifying a file of
     parameters.

     If the filename begins with a '/', then it is assumed to be the full
     path-name of the file. Otherwise, the file required is assumed to be
     /var/opt/snet/template/filename.  If filename is not found in the
     template directory, then it is returned as invalid.

SEE ALSO
     llc2template(4).













































                                                                        Page 2