67
Maximum number of
remote consoles
already established
Retry after one of the other remote consoles is finished.
Cannot login to
console
Invalid username and/or
password
Use valid username and password. If username and/or
password are lost, perform factory default reset using factory
reset switch. Factory default value of username and password
are both
admin
C.4 IP address troubleshooting
Problem
Cause
Action
Use serial console to find IP address
Cannot find IP
address of the
HelloDevice Pro
Series
Use HelloDeviceManager program to probe the HelloDevice
Pro Series on the network
The HelloDevice Pro
Series is not assigned
valid IP address
Use serial console to assign valid IP address to the
HelloDevice Pro Series
HelloDeviceManager
cannot probe the
HelloDevice Pro
Series
HelloDeviceManager
and the HelloDevice Pro
Series are not on the
same subnet
Run HelloDeviceManager on the PC that is on the same subnet
with the HelloDevice Pro Series
C.5 DHCP troubleshooting
Problem
Cause
Action
Cannot lease IP
address
DHCP server is not
working
Check if DHCP server is working correctly
IP address of the
HelloDevice Pro
Series is changed
DHCP server does not
extend lease time
Check if DHCP server is working correctly
C.6 TCP server operation troubleshooting
Problem
Cause
Action
IP configuration of
remote host is invalid
Check if IP configuration of the remote host is valid
Host mode of the
HelloDevice Pro Series
serial port is not TCP
server
Change the host mode of the HelloDevice Pro Series serial port
to TCP server or TCP server/client
IP address of the
HelloDevice Pro Series
or TCP/UDP port
number is wrong
Specify valid IP address and TCP/UDP port number of the
HelloDevice Pro Series
Cannot connect to
the HelloDevice Pro
Series
DSR option is set but
DSR input is not high
Disable DSR option or make DSR input of the HelloDevice Pro
Series high
