fta(4)fta(4)Namefta - device driver for DEFTA FDDI Network Adapter
device fta0 at ibus? vector ftaintr
The is a network device driver that controls a DEFTA. The DEFTA is a
TURBOchannel 100 Mbit/second Fiber Distributed Data Interface (FDDI)
timed token ring network adapter. The device driver allows the host
system to be an FDDI single attachment station.
The host's Internet address is specified at boot time with an SIOCSI‐
FADDR ioctl. The device driver employs the address resolution protocol
described in to map dynamically between Internet and FDDI addresses on
the local network.
The maximum frame size for the DEFTA interface is 4500 bytes, which is
substantially larger that the 1500 bytes maximum packet size of the
Ethernet interfaces. The device driver does not support the BSD trailer
encapsulation, which is specific to the VAX architecture.
The SIOCRPHYSADDR ioctl can be used to read the physical address of the
DEFTA adapter. The physical address of the DEFTA adapter can not be
The SIOCADDMULTI and SIOCDELMULTI ioctls can be used to add or delete
multicast addresses. The DEFTA supports up to 64 multicast addresses.
The SIOCRDCTRS ioctl can be used to read the FDDI driver counters. The
DEFTA adapter status and characteristics can also be read through this
ioctl by providing a FDDI_STATUS flag . The argument to this ioctl is a
pointer to a counter or status structure, found in <net/if.h>.
The SIOCENABLBACK and SIOCDISABLBACK ioctls can be used to enable and
disable the interface loopback mode, respectively.
The SIOCEEUPDATE ioctl can be used to update the adapter's firmware.
The SIOCIFRESET ioctl can be used to reset the adapter.
Diagnostic error messages contain information provided by the device
driver. For example:
fta%d: ftaprobe selftest failed
The DEFTA adapter did not pass the power-up selftest during autoconfig‐
fta%d: port init failed
The DEFTA adapter cannot be initialized.
fta%d: LINK unavailable
The network link has gone down and the station is no longer a member of
the FDDI ring.
fta%d: Ring Init Received
A Ring Initialization unsolicited event has been received from the FDDI
ring by the device driver through the DEFTA interface.
See Alsoarp(4p), fza(4), inet(4f), intro(4n)fta(4)