.\" SCCSID: @(#)ne.4	3.1	11/24/87.TH ne 4 .SH Namene \- Second Generation Ethernet Chip Interface.SH Syntax.nf\fBdevice ne0 at ibus? vector neintr\fR.\"\fBdevice ne0 at vba0 csr 0x200e0000 vector neintr\fR.fi.\".PP.\"The second line is used for busless small VAX processors.  Other.\"processors would use the first line. .SH Description.NXR "ne interface" "Ethernet interface".NXR "Lance Ethernet interface"The.PN ne interface provides access to a 10 Mb/s Ethernet network throughthe Digital's Second Generation Ethernet Chip (SGEC) based controller..PPThe host's Internet address is specified at boot time withan SIOCSIFADDR ioctl.The.PN ne interface employs the address resolution protocol described in.MS arp 4pto map dynamically between Internet and Ethernet addresses on the localnetwork..PPThe .PN ne driver 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 only used for packets destined for Internet hosts..PPThe SIOCSPHYSADDR ioctl can be used to change the physical address of the adapter and theSIOCRPHYSADDR ioctl canbe used to read its physical address..PPThe SIOCADDMULTI and SIOCDELMULTI ioctls can be used to add or deletemulticast addresses.  The .PN SGEC recognizes a maximum of 16 multicast addresses..PPThe SIOCRDCTRS and SIOCRDZCTRS ioctls can be used to read or read and clear the Ethernet driver counters.The argument to these two ioctls is a pointer to a counterstructure, .PN ctrreq, found in .PN <net/if.h> ..PPThe SIOCENABLBACK and SIOCDISABLBACK ioctls can be used to enableand disable the interface loopback mode respectively..SH DiagnosticsThe diagnostic error messages contain relevant information providedby the .PN ne driver. For example,.PP.B "ne%d: self test failed <reason lists>.brAdapter did not pass the power-up self-test during autoconfigurationtime..PP.B "ne%d: write CSR0 failed .brThe .PN ne driver was unable to set the initial value for the adapter..PP.B "ne%d: couldn't allocate .......brThe .PN ne driver was unable to allocate memory for the internal datastructures..B "ne%d: can't handle af%d".brThe interface was handeda message with addresses formated in an unsuitable addressfamily, and the packet was dropped..PP.B "ne%d: memory error (MERR)".brA host memory problem or a memory parity error has occurred..PP.B "ne%d: SIOCADDMULTI fail, multicast list full".brToo many multicast requests have been made. .SH See Alsoarp(4p), inet(4f), intro(4n)