serial heartbeat on RP8400

[Alan Hatch]

Any experience configuring a serail heart beat on a RP8400?

Specifically, which serial port do you use on the 8400 and what tty device corrolates to that port.

Thanks.

[Uday_S_Ankolekar]

From TKB.........

Here is the information needed in order to configure a serial
connection between a 2 node cluster:

RS232 Information
-----------------
If you plan to configure a serial line (RS232) to carry heartbeat, you
need to determine the serial device file that corresponds with the
serial port on each node.

1. If you are using a MUX panel, make a note of the system slot
number that corresponds to the MUX and also note the port number
that appears next to the selected port on the panel.

2. On each node, use ioscan -fnC tty to display hardware addresses
and device file names. For example:

ioscan -fnC tty

This lists all the device files associated with each RS232 device
on a specific node.

3. Select the file name corresponding to the slot number and port
number you used when connecting the serial (RS232) cable to the
node. If you used port 6 on the MUX panel on this node, the
device file would be /dev/tty0p6. If you used the second port on
the card with hardware address 56.0, the device file would be
/dev/tty1p1.

4. Once you have identified the device files, verify your connection
as follows. Assume that node 1 uses /dev/tty0p0, and node 2 uses
/dev/tty0p6.

- Test the connection as follows. From a terminal on node
1, issue the following command:

cat < /dev/tty0p0 {Return}

- From a terminal on node 2, issue the following command:

cat /etc/passwd > /dev/tty0p6 {Return}

The contents of the password file should be displayed on
the terminal on node 1.

5. On the worksheet, enter the following information:

Node Name Name of the node
RS232 Device File Enter the device file name corresponding
to a serial interface on each node. This
parameter is known as SERIAL_DEVICE_FILE
in the ASCII configuration file.


Pin-outs for 9 Pin connector
----------------------------

Pin Number Signal Description
---------- ------ -------------------
1 DCD Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR Data Terminal Ready
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear to Send
9 RI Ring Indicator

[Alan Hatch]

Uday,

Thanks for the info. The cat commands will no doubt prove helpful.

However, I am still concerned about the hardware side of things due to the fact that the only serial ports available are on the core i/0 card (chassis 0 - remote console).

Do you know if this is possible or do we need a seperate serial interface outside the core i/o?

[Uday_S_Ankolekar]

You can use both ..

Some of the external configurations details are below.
http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000062922356
-USA..

[Uday_S_Ankolekar]

Just one more thing, although the serial heartbeat configuration is not recomended but you can configure this as backup heartbeat..

-USA..