1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)ddn.4 8.1 (Berkeley) 6/5/93 33.\" 34.Dd June 5, 1993 35.Dt DDN 4 vax 36.Os BSD 4.3 37.Sh NAME 38.Nm ddn 39.Nd 40.Tn DDN 41Standard Mode 42.Tn X.25 43.Tn IMP 44interface 45.Sh SYNOPSIS 46.Cd "device ddn0 at uba0 csr 166740 vector ddnintr" 47.Sh DESCRIPTION 48The 49.Nm ddn 50device provides a 51.Tn DDN 52Standard Mode 53.Tn X.25 54interface to an 55.Tn IMP 56using 57the 58.Tn ACC ACP625 59.Tn X.25 60board. It is normally used for connecting to 61the Defense Data Network 62.Pq Tn DDN . 63The controller itself is not accessible 64to users, but instead provides a network interface for the 65Internet Protocol described in 66.Xr ip 4 . 67.Sh DIAGNOSTICS 68.Bl -diag 69.It ddn%d: not alive. 70The initialization routine was entered even though the device 71did not autoconfigure. This indicates a system problem. 72.Pp 73.It ddn%d: failed getting UBA resources for lcn %d." 74Insufficient 75.Tn UNIBUS 76resources existed to initialize the device. 77This is likely to be a shortage of 78.Tn UNIBUS 79mapping registers. 80.Pp 81.It ddn%d: couldn't get X25 init buffer. 82This indicates that an 83.Em mbuf 84could not be allocated for sending the initialization message to the 85.Tn ACP Ns 625. 86.Pp 87.It DDN: illegal X25 address length! 88.It DDN: illegal X25 address format! 89These errors indicate a problem with the called 90.Tn X.25 91address received 92from the 93.Tn IMP 94on an incoming call. 95.Pp 96.It X25 RESET on lcn = %d. 97This indicates that an unexpected 98.Tn X.25 99.Tn RESET 100was received on the 101indicated 102.Tn LCN . 103.Pp 104.It X25 INTERRUPT on lcn = %d, code = %d. 105This indicates that an unexpected 106.Tn X.25 107.Tn INTERRUPT 108Packet was received on the 109indicated 110.Tn LCN . 111.Pp 112.It ddn%d: failed to get supr msg bfr! 113This indicates that an 114.Em mbuf 115could not be allocated for sending a supervisor message to the 116.Tn ACP625 . 117.El 118.Pp 119Any other error message from 120.Ql ddn%d: 121indicates a serious error 122detected by either the driver or the 123.Tn ACP Ns 625 124firmware. 125.Sh SEE ALSO 126.Xr netintro 4 , 127.Xr ip 4 128.Sh HISTORY 129The 130.Nm 131interface appeared in 132.Bx 4.3 . 133