1.\" Copyright (c) 1983, 1991 The Regents of the University of California. 2.\" 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.\" from: @(#)ddn.4 6.5 (Berkeley) 3/27/91 33.\" $Id: ddn.4,v 1.2 1993/08/01 07:36:33 mycroft Exp $ 34.\" 35.Dd March 27, 1991 36.Dt DDN 4 vax 37.Os BSD 4.3 38.Sh NAME 39.Nm ddn 40.Nd 41.Tn DDN 42Standard Mode 43.Tn X.25 44.Tn IMP 45interface 46.Sh SYNOPSIS 47.Cd "device ddn0 at uba0 csr 166740 vector ddnintr" 48.Sh DESCRIPTION 49The 50.Nm ddn 51device provides a 52.Tn DDN 53Standard Mode 54.Tn X.25 55interface to an 56.Tn IMP 57using 58the 59.Tn ACC ACP625 60.Tn X.25 61board. It is normally used for connecting to 62the Defense Data Network 63.Pq Tn DDN . 64The controller itself is not accessible 65to users, but instead provides a network interface for the 66Internet Protocol described in 67.Xr ip 4 . 68.Sh DIAGNOSTICS 69.Bl -diag 70.It ddn%d: not alive. 71The initialization routine was entered even though the device 72did not autoconfigure. This indicates a system problem. 73.Pp 74.It ddn%d: failed getting UBA resources for lcn %d." 75Insufficient 76.Tn UNIBUS 77resources existed to initialize the device. 78This is likely to be a shortage of 79.Tn UNIBUS 80mapping registers. 81.Pp 82.It ddn%d: couldn't get X25 init buffer. 83This indicates that an 84.Em mbuf 85could not be allocated for sending the initialization message to the 86.Tn ACP Ns 625. 87.Pp 88.It DDN: illegal X25 address length! 89.It DDN: illegal X25 address format! 90These errors indicate a problem with the called 91.Tn X.25 92address received 93from the 94.Tn IMP 95on an incoming call. 96.Pp 97.It X25 RESET on lcn = %d. 98This indicates that an unexpected 99.Tn X.25 100.Tn RESET 101was received on the 102indicated 103.Tn LCN . 104.Pp 105.It X25 INTERRUPT on lcn = %d, code = %d. 106This indicates that an unexpected 107.Tn X.25 108.Tn INTERRUPT 109Packet was received on the 110indicated 111.Tn LCN . 112.Pp 113.It ddn%d: failed to get supr msg bfr! 114This indicates that an 115.Em mbuf 116could not be allocated for sending a supervisor message to the 117.Tn ACP625 . 118.El 119.Pp 120Any other error message from 121.Ql ddn%d: 122indicates a serious error 123detected by either the driver or the 124.Tn ACP Ns 625 125firmware. 126.Sh SEE ALSO 127.Xr netintro 4 , 128.Xr ip 4 129.Sh HISTORY 130The 131.Nm 132interface appeared in 133.Bx 4.3 . 134