ZyXEL Communications OMC-2301, User Manual

Page: 193 / 224

Chapter 21 Troubleshooting
OMC-2301 User’s Guide
193
• Try to access the OMC using another service, such as Telnet. If you can access the
OMC, check the Advanced Application > Access Control > Service Access Control
and Advanced Application > Access Control > Remote Management settings to
find out why the OMC does not respond to HTTP.
V
I can see the Login screen, but I cannot log in to the OMC.
1 Make sure you have entered the user name and password correctly. The default user
name is
admin , and the default password is 1234 . These fields are case-sensitive, so
make sure [Caps Lock] is not on.
2 Turn the system off and on.
3
If this does not work, you have to reset the device to its factory defaults. See Section
21.5 on page 195 .
V
I cannot use FTP to upload / download the configuration file. / I cannot use
FTP to upload new firmware.
See the troubleshooting suggestions for I cannot see or access the Login screen in the web
configurator. Ignore the suggestions about your browser.
V
The SNMP manager server cannot get information from the OMC.
1
Ping the OMC from the SNMP server. If you cannot, check the cable, connections and IP
configuration.
2 Check to see that the community (or trusted host) in the OMC matches the SNMP
server’s community.
3 Make sure that your computer’s IP address matches a configured trusted host IP address
(if configured).
V
I cannot telnet into the OMC.
1 Make sure that a telnet session(s) is not already operating. The OMC only accepts one
telnet session at a time (or a total of four Telnet and SSH sessions with multiple login
enabled).
2 Make sure that your computer’s IP address matches a configured secured client IP
address (if configured). The OMC immediately disconnects the telnet session if secured