Mitsubishi Electric MELIPC MI5000 Series User Manual page 207

■Telnet connection fails
Check item
Is an Ethernet cable connected to the Ethernet port (CH1)?
Are user name and password correct?
Does the following message appear?
• 'Sorry, session limit reached.'
In the following settings, is access from the PC being blocked?
• [Basic Parameter]  [External Device Cooperate Applicable Settings] 
[Security Settings]  [IP Filter Settings]
■If FTP cannot connect
Check item
Is an Ethernet cable connected to the Ethernet port (CH1)?
Are user name and password correct?
Are there 11 or more external devices making FTP connections to this
product?
Can an FTP connection to this product be made from the Command prompt of
Windows?
In the following settings, is access from the PC being blocked?
• [Basic Parameter]  [External Device Cooperate Applicable Settings] 
[Security Settings]  [IP Filter Settings]
■If Ethernet devices are unable to connect
Check item
Is an Ethernet cable connected to the Ethernet port (CH1)?
Do Ethernet devices have numbers 1 to 1023 or 61440 to 65534 set in the
VxWorks part port numbers?
Does the IP addresses of devices connected to the Ethernet port (CH1)
overlap with a segment of the IP addresses of the virtual Ethernet of this
product?
In the following settings, is access from the PC being blocked?
• [Basic Parameter]  [External Device Cooperate Applicable Settings] 
[Security Settings]  [IP Filter Settings]
Corrective action
Change the connection destination of the Ethernet cable to the Ethernet port
(CH1), and set so that Ping provides a normal response.
Enter the correct username and password. If the username/password has
been forgotten, initialize this product.
Terminate the Telnet connection from another personal computer and take any
of the following actions:
• Reconnect after the Telnet connection timeout time has elapsed.
• Reset this product.
In the IP filter settings, unblock access from the PC.
Corrective action
Change the connection destination of the Ethernet cable to the Ethernet port
(CH1), and set so that Ping provides a normal response.
Enter the correct username and password. If the username/password has
been forgotten, initialize this product.
Adjust so that the number of external devices making FTP connections is 10
or less.
Change to an FTP client tool that can connect normally.
In the IP filter settings, unblock access from the PC.
Corrective action
Change the connection destination of the Ethernet cable to the Ethernet port
(CH1), and set so that Ping provides a normal response.
Ports 1 to 1023 are generally reserved (WELL KNOWN PORT NUMBERS),
and Ports 61440 to 65534 are used by other communications functions.
Therefore, use Ports 1024 to 4999, and 5010 to 61439.
Change the IP addresses of devices connected to Ethernet port (CH1) so that
these do not overlap with virtual Ethernet IP address segments.
In the IP filter settings, unblock access from the PC.
Appendix 1 Troubleshooting by Symptom
A
APPX
205