Sun Microsystems Netra t1 100, User And Administration Manual

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52 Netra t1 User and Administration Guide • June 2000
Setting up Serial Connections
To perform the inital configuration when you install the Netra t1 system, and also
for on-going monitoring and management of the system, you will need to use at
least one of the serial ports on the system’s rear panel. You can connect either or
both serial ports to any of the following devices:
■
A dumb terminal.
For this connection, you can use the standard RJ45 patch cable supplied with the
Netra t1 Model 100/105, but you need to insert one end into the DB25 adapter
also supplied with the Netra t1 system.
■
A Sun workstation.
For this connection, you can use the standard RJ45 patch cable supplied with the
Netra t1 Model 100/105, but you need to insert one end into the DB25 adapter
also supplied with the Netra t1 system.
■
A Terminal Server (or patch panel connected to a Terminal Server).
The pinouts for the Netra t1 system’s serial ports correspond with the pinouts for
the RJ45 ports on the Asynchronous Serial Interface Breakout Cable supplied by
Cisco for use with the Cisco L2511 Terminal Server. For terminals from other
manufacturers, you may need to make your own cross-over (null-modem) cable
(see “Cross-overs for Connecting to a Terminal Server” on page 53).
■
A modem.
For this connection, you can use the standard RJ45 patch cable supplied with the
Netra t1 Model 100/105, but you need to insert one end into the DB25 adapter
also supplied with the system. Do not connect a modem to the Serial A/LOM
port; use the Serial B port. The DTR signal asserted on the Serial A/LOM port
changes to DCD during booting or when control of the port is taken over by the
LOM device, and this can cause modem connections to be lost.
Note –
The Serial A/LOM port cannot be used for binary data transfers. To perform
anything other than ASCII transfers, use the port labeled Serial B.
SysAdmin.book Page 52 Friday, March 30, 2001 2:38 PM