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Flags
Andrew Pearson edited this page Oct 15, 2019
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2 revisions
| Bit Position | Flag |
|---|---|
| Bit 7 (10000000) | Message Type |
| Bit 6 (01000000) | Message Type |
| Bit 5 (00100000) | Message Type |
| Bit 4 (00010000) | Extended |
| Bit 3 (00001000) | Hops Left |
| Bit 2 (00000100) | Hops Left |
| Bit 1 (00000010) | Max Hops |
| Bit 0 (00000001) | Max Hops |
| Message Type | Meaning |
|---|---|
| 100 | Broadcast Message |
| 000 | Direct Message |
| 001 | ACK of Direct Message |
| 101 | NAK of Direct Message |
| 110 | ALL-Link Broadcast Message |
| 010 | ALL-Link Cleanup Message |
| 011 | ACK of ALL-Link Cleanup Message |
| 111 | NAK of ALL-Link Cleanup Message |
| Extended | Meaning |
|---|---|
| 0 | Standard-length Message |
| 1 | Extended-length message |
| Hops Left | Meaning |
|---|---|
| 00 | 0 Message Retransmissions Remaining |
| 01 | 1 Message Retransmissions Remaining |
| 10 | 2 Message Retransmissions Remaining |
| 11 | 3 Message Retransmissions Remaining |
| Max Hops | Meaning |
|---|---|
| 00 | Do not retransmit this message |
| 01 | Retransmit this message 1 time maximum |
| 10 | Retransmit this message 2 time maximum |
| 11 | Retransmit this message 3 time maximum |
| Meaning | Data |
|---|---|
| Flag | 0x2B |
| Binary | 00101011 |
| Grouped Binary | 001 0 10 11 |
| 001 | Ack of Direct Message |
| 0 | Standard Message |
| 10 | 2 retransmissions remaining |
| 11 | Retransmit 3 times max |