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July 13, 2018

Fine-Tune: Resetting your LDEV 21 Console

I have a 959 system at my site and there are times when I can't get the remote console port on LDEV 21 to work. How do I troubleshoot this problem and reset the console port? 

1. Is the port configured and available?

a) Check to be sure the system recognizes the port

:showdev 21

LDEV     AVAIL
     21     AVAIL

b) Is the SYSGEN configuration okay? 

:sysgen  sysgen>io
io> ld 21

LDEV:21  DEVNAME:  OUTDEV:21  MODE:  JAID
**ID: A1703-60003-CONSOLE-TERMINAL 
RSIZE:        40   DEVTYPE: TERM
**PATH: 56/56.1   MPETYPE: 16   MPESUBTYPE:  0
CLASS: TERM

c) Is the User Port configured in NMMGR?

:nmmgr
then ...

OPEN CONF, DTS, USER PORT

Logical Device [21  ]  (1 - 1800)
Line Speed [2400  ]  (300, 1200, 9600, or 19200 bps)
Modem Type [1] (0-NONE, 1-US, 2-European, 3 - V22.bis)
Parity [NONE] (None, Even, Odd, 0's, or 1's)

2. Is the access port enabled, configured correctly and unlocked? On the local console type in CTRL-B to get the CM> prompt. The REMOTE settings are displayed at the bottom of the console screen.

a) Check/Change the configuration

cm> CA
Bit rate:               2400 bits/sec
Protocol:               Bell
System identification:

b) Enable Remote

cm> ER

c) Unlock Remote and raise the DTR signal on the modem

cm> U

d) Go back to command mode (:).

cm> CO

3. If you still cannot dial into the remote console, there are two utilities in sysdiag you can try.  Modmutil will do a self test on the modem, and consolan will reset the port.

a) To test the modem:

:sysdiag
dui> modmutil
mu> diag
diag> autotest
diag> exit
mu> exit

b) To reset the modem

:sysdiag
dui> CONSOLAN pdev=nn/nn section=2(23)

Continue? YES
Reset local/remote?  REMOTE

05:08 PM in Hidden Value, Homesteading | Permalink

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