Kontron VMP2 - Manual (Page 82)

NetBootLoader VMP2
Page 5 - 8 © 2002 PEP Modular Computers GmbH ID 24855, Rev. 02
5.4.3 NetBootLoader Configuration
There are several NetBootLoader commands which provide the operator with the capability to
configure specific parameters which are used by the NetBootLoader for interfacing operations.
These commands are:
• BW (BootWait)
• NET
• PASSWD
• PF (Port Format)
Default settings are available for all the above commands except for “net” which is dependent
on the application environment.
5.4.3.1 BW
This command is used to display or set the actual boot wait time used by the NetBootLoader
to delay the boot operation before proceeding with the loading and starting of an application. If
this time is set too short it may only be possible to gain access to the NetBootLoader via the
“ABT” switch.
The BootWaitTime value is stored in the boot section of the serial EEPROM. This section is
validated with a CRC code to avoid the setting of random parameters.
To validate an invalid CRC, an operating system utility must be used, or, alternatively, the “-f”
option of the “bw” command must be issued.
5.4.3.2 NET
This command is used to set or display the parameters for the configuration of the Ethernet in-
terface of the CPU board. The Ethernet interface is only available after these settings have
been made. Once these settings have been made, the system must be cold started or reset for
them to take effect.
5.4.3.3 PASSWD
This command is used to set the password used by the NetBootLoader for the operation of the
telnet interface. No password is required for access from the TERM interface.
Note ...
If the CRC of the boot section is not valid, changing the BootWaitTime will have
no effect because the “bw” command does not validate an invalid CRC. In this
case, a default timing of 5 seconds is always used.
Warning !!!
Using the “bw -f” command to validate invalid entries may adversely impact the
operation of the operating system.