IBM RS/6000 7025 manual Recovery Strategy

With the remote terminal connected to serial port primary1 and defined as the console device, there are two tests you can perform:

1.Will the modemdrop the connection after the "System initialization complete" message appears at the remote terminal?

If yes, this is the correct response. The modem is set up correctly.

If

no,

try

another

&Dn

setting

for

your server's modem. See your modem manual

for

this

information. The

&Dn

command

appears

in

three

places

each

in

three

of

the

sample

modem

2

files

configuration.

2. Will

the

server's disconnectmodem

when

the

power drops? You can make this

observation

at

the

remote terminal by commanding

your

server

to shutdown and

power off.

(The AIX commandshutdown -F

will

do this.)

Watch

for the

message

NO CARRIER

on

your

remote

terminal.

If

yes,

this

is

the correct

response. The

modem is

set

up

correctly.

If

no,

try

another

&Dn

setting

for

your server's modem. See your model manual

for

this

information. The

&Dn

command

appears

in

three

places

each

in

three

of

the

sample

modem

2

files

configuration.

Recovery Strategy

The	recovery	strategy consiststwoof callsmakingto establish a remote session.
This	is the	easiest	solution to implement, and allows more freedom for configuring
your	server's	serial	ports.

To set up a remote terminal session, dial into the Service Processor and start th system. After the operating system is loaded and initialized, the connection will dropped. At this point, you call the server back and the operating system will a and offer you the login prompt.

2 Only the following sample modem configuration files contain the &Dn command (in three places each):

Ÿ modem_f.cfg Ÿ modem_f0.cfg Ÿ modem_f1.cfg

If you are using modem_z.cfg or modem_z0.cfg, you	cannot control DTR response. If	your	remote
terminal does not disconnect after logging off, you	must command the remote terminal	emulator	to hang
up. This then breaks the connection.
Appendix	D. Modem ConfigurationsD-7