APPENDIX D: Port Number Assignments
The MegaPower CPU IP port source and destination port numbers must be programmed; otherwise, communication with external devices will not occur.
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| MPCPU | PC |
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Purpose | Protocol | Port | Port | Description |
Activity | TCP(3) | 514 | Any | Used as a server to listen for requests asking to initiate |
Logging(1) |
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| activity logging. These requests are normally sent from the |
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| activity logging client. Once a request is received and the |
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| connection is established, the port is used as the source for |
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| sending the activity logging data. |
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EASY CPU(1) | UDP(4) | 4001 | Any | Used to communicate (to the EASY CPU or any other such |
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| program) all available status or information data. This port |
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| works as a server where each received request produces |
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| one or more replies to the requesting client (usually to the |
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| EASY CPU). |
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Snapshot(1) | UDP(4) | Any | 69 | Used for sending JPEG images taken from a camera. Uses |
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| TFTP (Trivial File Transfer Protocol) for image transfer. |
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Setting Time/ | UDP(4) | 69 | Any | Used to set or retrieve MPCPU calendar time. Uses TFTP |
Firmware |
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| (Trivial File Transfer Protocol) for the calendar time data |
Upgrade(1) |
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| transfer. |
NTP(2) | UDP(4) | 123 | 123 | NTP (Network Time Protocol) provides time synch between |
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| the MPCPU and network systems. |
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Alarm Email(2) | TCP(3) | Any | 25 | This port of the server to which the MPCPU sends Email |
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| messages in response to an alarm. |
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IP Address | UDP(4) | 68 | 67 | Port 68 (source) assigns the IP address and is used for |
Assignment(2) |
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| DHCP when enabled. Port 67 Bootstrap Protocol Server |
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| (destination) is the listening port on boot and DHCP |
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| servers. Clients broadcast to this port for boot or network |
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| parameters. |
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Notes: |
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(1)MPCPU specific
(2)Network specified
(3)TCP (Transmission Control Protocol)
(4)UDP (User Datagram Protocol).
MEGAPOWER CPU ADMINISTRATOR’S GUIDE
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