4.3BSD - /usr/man/cat4/vv.0

VV(4)                                                                    VV(4)


NAME
       vv - Proteon proNET 10 Megabit ring

SYNOPSIS
       device vv0 at uba0 csr 0161000 vector vvrint vvxint

DESCRIPTION
       The  vv interface provides access to a 10 Mb/s Proteon proNET ring net‐
       work.

       The network address of the interface must be specified with an an SIOC‐
       SIFADDR  ioctl  before data can be transmitted or received.  It is only
       permissible to change the network address while the interface is marked
       "down".

       The  host’s  hardware address is discovered by putting the interface in
       digital loopback mode (not joining the ring) and  sending  a  broadcast
       packet from which the hardware address is extracted.

       Transmit timeouts are detected through use of a watchdog routine.  Lost
       input interrupts are checked for when packets are sent out.

       If the installation is running CTL boards which use the  old  broadcast
       address  of 0 instead of the new address of 0xff, the define OLD_BROAD‐
       CAST should be specified in the driver.

       The driver can use ‘‘trailer’’ encapsulation to minimize  copying  data
       on  input  and output.  This may be disabled, on a per-interface basis,
       by setting the IFF_NOTRAILERS flag with an SIOCSIFFLAGS ioctl.

DIAGNOSTICS
       vv%d: host %d.  The software announces the host address discovered dur‐
       ing autoconfiguration.

       vv%d: can’’t initialize. The software was unable to discover the address
       of this interface, so it deemed "dead" will not be enabled.

       vv%d: error vvocsr=%b.  The hardware indicated an error on the previous
       transmission.

       vv%d:  output timeout.  The token timer has fired and the token will be
       recreated.

       vv%d: error vvicsr=%b.  The hardware indicated an error  in  reading  a
       packet off the ring.

       en%d:  can’’t  handle  af%d.   The  interface  was handed a message with
       addresses formatted in an unsuitable address  family;  the  packet  was
       dropped.

       vv%d:  vs_olen=%d.   The  ring output routine has been handed a message
       with a preposterous  length.   This  results  in  an  immediate  panic:
       vs_olen.

SEE ALSO
       intro(4N), inet(4F)

BUGS
       The  encapsulation  of  trailer  packets  in the 4.2BSD version of this
       driver was incorrect (the packet type was in VAX  byte  order).   As  a
       result,  the  trailer  encapsulation  in this version is not compatible
       with the 4.2BSD VAX version.


4.2 Berkeley Distribution        May 16, 1986                            VV(4)