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4.4.2 ACCESS VIA SNMP
The NSU may be accessed and monitored via the Simple Network Management
Protocol (SNMP). SNMP is designed for control of network elements from a central
management point.
The SNMP Management Information Base (MIB) file for the system, available from
MITEQ defines the specifics of the interface. This file is read by the chosen SNMP
management tool to provide an “understanding” of the interface. The MIB file is in a
format that can be ready with any text editor. Do NOT modify this file.
SNMP operating parameters may be set on the COMMS web page. If SNMP
operation is not desired, this feature may be rendered inaccessible by inserting a long
arbitrary string in the Read Community and Write Community fields.
4.4.3 ACCESS VIA TELNET
The unit may be accessed via Telnet. There is no special protocol on the Telnet
channel; the unit will expect the same commands, and offer the same replies, as via the
serial port.
Telnet access must first be enabled on the COMMS web page. If not being used, it is
recommended that it be left disabled for security reasons.
When a Telnet connection is established, the unit will request the password (five ASCII
characters), which should be sent in the standard MITEQ wrapper (‘{‘<address byte
(ignored)><password>’}’<checksum byte>). The connection will be refused if a user is
already logged in via the web interface.
Once the connection is established, standard serial commands may be sent and
responses will be received. Logout is automatic when the Telnet connection is broken.
4.5 FIRMWARE UPGRADE
Should it become necessary to upgrade the firmware, the updated firmware file and the
update utilities will be provided by MITEQ.
1. Make sure that the NSU is in the Remote control mode
2. Access the web page for the NSU. Note the IP Address and password of the
NSU unit.
3. Go to the Misc Settings page and make sure that Enable Reflash is checked.
4. Install the update utility provided by MITEQ: AutoUpdate.exe and the
DBNSU_APP.s19 firmware upgrade files on your computer. Make a note of
where you save the files.
5. Start AutoUpdate.exe.
6. To set the IP address to flash: Click "Find...", it will show a list of Ethernet-based
units that the application detected. Highlight the address you wish to reflash and
click "OK".
7. Click “Browse…” and select the DBNSU_APP.s19 file for updating to the NSU.
8. Check the box that reads "Reboot When Complete."
9. Start the update process. Click "Update"