Microtronix Access Serial-TCP/IP Converter
3.2.3 Emergency IP Address Recovery
The u-boot console may be used to recover a forgotten IP address. While in the U-Boot console, the
default IP address and other parameters may be displayed:
print ipaddr
print netmask
print gatewayip
If the default values are not in current effect, they may override the system-defined values temporarily
by setting new default values (if desired) and entering the U-Boot commands:
set ipaddr 10.1.1.240
set netmask 255.255.255.0
set gatewayip 10.1.1.1
set runlevel 2
save
boot
When the system starts up, it will be using the default IP address information, and should be reachable
on that network. Browse into the web interface and access the Ethernet page to view the “forgotten”
values. Restart the system to get the U-Boot console, and reset run level:
set runlevel
save
boot
The system will restart with the system-defined values.
3.2.4 System Maintenance
The u-boot console may also be used in conjunction with Microtronix support for applying firmware
updates, and emergency IP address recovery.
To apply firmware updates:
1) Obtain one or both of the kernel image (uImage) and filesystem image (jffs2.img) files from
Microtronix
2) Start a tftpd server on the PC or an available file server
3) Place the file(s) in the tftpd default directory on the PC or server
4) Enter the PC or server IP address (example 10.1.1.200) using the u-boot commands:
set serverip 10.1.1.200
save
5) Load the new kernel image:
run updatekernel
6) Load the new filesystem image:
run updatejffs2
7) Start the system by re-applying power or typing the “boot” command.
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