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1.1 root 1: .\" Copyright (c) 1983 The Regents of the University of California.
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18: .\" @(#)ddn.4 6.4 (Berkeley) 6/23/90
19: .\"
20: .TH DDN 4 "June 23, 1990"
21: .UC 6
22: .SH NAME
23: ddn \- DDN Standard Mode X.25 IMP interface
24: .SH SYNOPSIS
25: .B "device ddn0 at uba0 csr 166740 vector ddnintr"
26: .SH DESCRIPTION
27: The
28: .I ddn
29: device provides a DDN Standard Mode X.25 interface to an IMP using
30: the ACC ACP625 X.25 board. It is normally used for connecting to
31: the Defense Data Network (DDN). The controller itself is not accessible
32: to users, but instead provides a network interface for the
33: Internet Protocol described in
34: .IR ip (4).
35: .SH DIAGNOSTICS
36: .BR "ddn%d: not alive" .
37: The initialization routine was entered even though the device
38: did not autoconfigure. This indicates a system problem.
39: .PP
40: .BR "ddn%d: failed getting UBA resources for lcn %d" .
41: Insufficient UNIBUS resources existed to initialize the device.
42: This is likely to be a shortage of UNIBUS mapping registers.
43: .PP
44: .BR "ddn%d: couldn't get X25 init buffer" .
45: This indicates that an
46: .I mbuf
47: could not be allocated for sending the initialization message to the
48: ACP625.
49: .PP
50: .BR "DDN: illegal X25 address length!"
51: .br
52: .BR "DDN: illegal X25 address format!"
53: .br
54: These errors indicate a problem with the called X.25 address received
55: from the IMP on an incoming call.
56: .PP
57: .BR "X25 RESET on lcn = %d" .
58: This indicates that an unexpected X.25 RESET was received on the
59: indicated LCN.
60: .PP
61: .BR "X25 INTERRUPT on lcn = %d, code = %d" .
62: This indicates that an unexpected X.25 INTERRUPT Packet was received on the
63: indicated LCN.
64: .PP
65: .BR "ddn%d: failed to get supr msg bfr!" .
66: This indicates that an
67: .I mbuf
68: could not be allocated for sending a supervisor message to the
69: ACP625.
70: .PP
71: Any other error message from ddn%d: indicates a serious error
72: detected by either the driver or the ACP625 firmware.
73: .SH SEE ALSO
74: netintro(4), ip(4)
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