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Full Discussion: Enterprise 4500 Question
Top Forums UNIX for Advanced & Expert Users Enterprise 4500 Question Post 25552 by RTM on Wednesday 31st of July 2002 05:31:29 PM
Old 07-31-2002
You can try the pinouts found at Nullmodem.com - DB-25 and Nullmodem.com - RJ45 but you really need to find out what the pinout is as far as the NTS is concerned (you might need something just a little bit different).

Could not find any info on SUN for what is normal - the only thing I found was the following (that seemed to be of any use). Oh, you don't need to set the port for console on the E4500 side.

Console Logging Options - Tip line to ttya

This may be one of the least expensive console logging options, but can create challenges when attempting to monitor multiple systems. The system that is performing the monitoring function must be up and operational, or logging of the other systems console is lost.

To enable this console logging mode, take a standard serial cable and connect one end to the system ttya port, then connect the other end of the cable to any serial port on any other local workstation.

Once the cable is connected, a user on this monitoring system can issue the tip command and be connected to the other systems console. Note that prior to issuing the tip command, the user must enable some form of logging, i.e. Using the log to file option of an Xterm session, etc.

Using TIP

Have the system console of the 'problem' system redirected to another system.

The basic steps:

Hook a null modem cable between serial port A of the 'problem' machine and one of the serial ports of the healthy machine. The port (a or b) on the healthy machine depends on the hardwire entry in the /etc/remote file on the healthy system.

Here is the hardwire entry /etc/remote that uses port b on the healthy machine.

hardwire: :dv=/dev/term/b:br#9600:el=^C^S^Q^U^D:ie=%$Smiliee=^D:

A null modem cable in its most basic form is an rs232 serial cable with a minimal pin connections as follows:

2 ------ 3

3 ------ 2

7 ------ 7

A standard serial cable with a null modem adapter from an electronics store will work too.

There should be an entry for hardwire already in /etc/remote. It comes with the default OS. If one is not there, you can always copy it from another Solaris system.

Now open a command-tool on the healthy system. Sometimes tip behaves better with a shell-tool, but you lose scrolling.

Type in: tip hardwire

You should see a connected message in this command-tool window.

NOTE: you will get the connected message regardless of the presence of the serial cable. Connected just means your tip session is talking to the serial port, not to another system.
 

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dc(4)							     Kernel Interfaces Manual							     dc(4)

Name
       dc - serial line/mouse/keyboard

Syntax
       device	 dc0  at ibus?	vector dcintr

Description
       The  serial line controller provides four ports, with modem control on two of the ports.  The DECstation 3100 and DECstation 2100 only pro-
       vide partial modem control.  The DECstation 5000 provides full modem control. The ports are used as follows:

       Port	 Usage
       0	 Graphics device keyboard at 4800 BPS
       1	 Mouse or tablet at 4800 BPS
       2	 Communications port 1 (w/modem control)/local terminal
       3	 Communications port 2 (w/modem control)/local terminal

       Each communication port from the serial line controller behaves as described in and can be set to run at any of 16 speeds.  For the  encod-
       ing, see

       When  a	graphics device is not being used as the system console, communications port 2 becomes the system console.  In this configuration,
       the port can only be used at 9600 BPS and no modem control is supported.

       The serial line driver operates in interrupt-per-character mode (all pending characters are flushed from the silo on each interrupt).

Restrictions
       Speed must be set to 9600 BPS on the console port and 4800 BPS on ports used by graphics devices.  The serial  line  driver  enforces  this
       restriction; that is, changing speeds with the command may not always work on these ports.

Files
       console terminal

       local terminal

       local terminal

See Also
       console(4), devio(4), tty(4), ttys(5), MAKEDEV(8)

								       RISC								     dc(4)
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