NAME
ddn
-
DDN
Standard Mode
X.25
IMP
network interface
SYNOPSIS
ddn0 at uba0 csr 166740 vector ddnintr
DESCRIPTION
NOTE: This driver has not been ported from
4.4BSD
yet.
The
ddn
device provides a
DDN
Standard Mode
X.25
interface to an
IMP
using
the
ACC ACP625
X.25
board. It is normally used for connecting to
the Defense Data Network
(DDN).
The controller itself is not accessible
to users, but instead provides a network interface for the
Internet Protocol described in
ip(4).
DIAGNOSTICS
- ddn%d: not alive.
-
The initialization routine was entered even though the device
did not autoconfigure. This indicates a system problem.
- ddn%d: failed getting UBA resources for lcn %d."
-
Insufficient
UNIBUS
resources existed to initialize the device.
This is likely to be a shortage of
UNIBUS
mapping registers.
- ddn%d: couldn't get X25 init buffer.
-
This indicates that an
mbuf
could not be allocated for sending the initialization message to the
ACP625.
- DDN: illegal X25 address length!
-
- DDN: illegal X25 address format!
-
These errors indicate a problem with the called
X.25
address received
from the
IMP
on an incoming call.
- X25 RESET on lcn = %d.
-
This indicates that an unexpected
X.25
RESET
was received on the
indicated
LCN.
- X25 INTERRUPT on lcn = %d, code = %d.
-
This indicates that an unexpected
X.25
INTERRUPT
Packet was received on the
indicated
LCN.
- ddn%d: failed to get supr msg bfr!
-
This indicates that an
mbuf
could not be allocated for sending a supervisor message to the
ACP625.
Any other error message from
`ddn%d:'
indicates a serious error
detected by either the driver or the
ACP625
firmware.
SEE ALSO
ip(4),
netintro(4)
HISTORY
The
ddn
interface appeared in
4.3BSD.