fza(4)fza(4)Namefza - device driver for DEFZA FDDI Network Interface
device fza0 at ibus? vector fzaintr
The is a network device driver that controls a DEFZA. The DEFZA 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 DEFZA 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
DEFZA adapter. The physical address of the DEFZA adapter can not be
The SIOCADDMULTI and SIOCDELMULTI ioctls can be used to add or delete
multicast addresses. The DEFZA supports up to 64 multicast addresses.
The SIOCRDCTRS ioctl can be used to read the FDDI driver counters. The
DEFZA 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:
fza%d: fzaprobe selftest failed
The DEFZA adapter did not pass the power-up selftest during autoconfig‐
fza%d: port init failed
The DEFZA adapter cannot be initialized.
fza%d: port in the Halt State -> CNS hardware fault
The DEFZA adapter went to the Halt state because of an adapter firmware
fza%d: LINK unavailable
The network link went down which means that the station is not on the
fza%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), inet(4f), intro(4n)fza(4)