packet:protocols
Differences
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packet:protocols [2024/04/17 22:25] – created 2e0itb | packet:protocols [2024/04/19 22:34] – [AXTCP] 2e0itb | ||
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Keep It Simple Silly | Keep It Simple Silly | ||
- | Protocol used between a TNC and a computer. | + | Protocol used between a TNC and a computer. |
====== AXIP ====== | ====== AXIP ====== | ||
Line 12: | Line 12: | ||
Appears to be an AX.25 frame in an IP packet with the IPPROTO field set to 93. | Appears to be an AX.25 frame in an IP packet with the IPPROTO field set to 93. | ||
+ | |||
+ | | IP | AX.25 Frame | AX.25 CRC16 | | ||
+ | |||
====== AXUDP ====== | ====== AXUDP ====== | ||
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Appears to be an AX.25 frame in a UDP packet. | Appears to be an AX.25 frame in a UDP packet. | ||
+ | |||
+ | | IP | UDP | AX.25 Frame | AX.25 CRC16 | | ||
====== AXTCP ====== | ====== AXTCP ====== | ||
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Appears to be two byte length (big endian), followed by an AX.25 packet. | Appears to be two byte length (big endian), followed by an AX.25 packet. | ||
+ | |||
+ | | IP | TCP | 2 byte len (big endian) | AX.25 Frame | AX.25 CRC16 | | ||
+ | |||
+ | For xrouter at least, the first packet needs to have your alias in the destination field, and your callsign in the source field, the control field can be anything, and the CRC must match. |
packet/protocols.txt · Last modified: 2024/05/11 11:21 by 2e0itb