.\" SCCSID: @(#)xna.4	6.2	7/28/89.TH xna 4.SH Namexna \- DEBNI and DEMNA Ethernet interfaces.SH Syntax.nf\fBdevice xna0 at vaxbi? node? vector xnaintr\fP (DEBNI)\fBdevice xna0 at xmi? node? vector xnaintr\fP (DEMNA).fi.SH Description.NXR "xna interface" "DEBNI interface and DEMNA interface".NXR "DEBNI interface and DEMNA interface".NXR "Ethernet address" "mapping to Internet address".NXR "Internet address" "mapping to Ethernet address"The.PN xnadriver provides access to a 10 Mbytes Ethernet network throughthe DEBNI and DEMNA adapters.  The DEBNI is an Ethernet to BI bus.The DEMNA is an Ethernet to XMI adapter..PPThe host's Internet address is specified at boot time with an SIOCSIFADDR ioctl.  The.PN xnadriver employs the Address Resolution Protocol, as described in.MS arp 4p ,to map dynamically between Internet and Ethernet addresses on the localnetwork..PPThe .PN xnadriver normally tries to use a trailer encapsulationto minimize copying data on input and output.  This can bedisabled for an interface by setting the IFF_NOTRAILERSflag with an SIOCSIFFLAGS ioctl.Trailers are used only for packets destined for Internet hosts..PPThe SIOCSPHYSADDR ioctl can be used to change the physical addressof the adapter and SIOCRPHYSADDR canbe used to read its physical address.  SIOCADDMULTI and SIOCDELMULTI can be used to add or delete multicast addresses.  The .PN xna driver supports a maximum of 12 multicast addresses. The argument to the latter ioctls is a pointer to an ``ifreq'' structure found in .PN <net/if.h> ..PPSIOCRDCTRS and SIOCRDZCTRS ioctls can be used to read or read and clear network counters. The argument to the latter two ioctls is a pointer to a counter structure ``ctrreq'' found in .PN <net/if.h> ..PPThe ioctls SIOCENABLBACK and SIOCDISABLBACK can be used to enableand disable the interface loopback mode..SH RestrictionsThe PUP protocol family is not supported. .SH Diagnostics.sp.B xna%d: port self-test failed:\<\fIregister list\fP\>.brAdapter did not pass the power-up self-test during autoconfiguration time. The port attachment fails..PP .B xna%d: couldn't allocate....brThe.PN xnadriver was unable to allocate memory for adapter data structures. The port attachment fails..PP.B xna%d: port probe failed:\<\fIregister list\fP\>.brThe.PN xnadriver was unable to bring the adapter into the initialized state. The port attachment fails..PP .B xna%d: port init failed:\<\fIregister list\fP\>.brThe.PN xnadriver failed to prepare the adapter for runtime use..PP .B xna%d: port state changed, resetting:\<\fIregister list\fP\>.brThe adapter issued a port state change interrupt. The port state is reset..PP .B xna%d: port reset failed.brThe.PN xnadriver was unable to bring the adapter into the initialized state during a port reset. .PP .B xna%d: command failed, error code:\<\fIerror code\fP\>.brThe adapter port command failed. The.I error code gives reason for failure..PP .B xna%d: couldn't handle af%d.brA packet with an undefined protocol type has been sent to the adapter..PP .B xna%d: addmulti failed, multicast list full.brToo many multicast requests have been made..SH See Alsoarp(4p), inet(4f), intro(4n)