Token Ring Packet Format
--- ------------------
| | SDEL |
| | 1 byte |
| ------------------
| | AC |
| | 1 byte |
| ------------------
| | FC |
| | 1 byte |
| ------------------
| |_ DEST ADDR |
| |_ 6 bytes |
21 bytes | |_ |
| |_ |
| |_ |
| |_ |
| ------------------
| |_ SRC ADDR |
| |_ 6 bytes |
| |_ |
| |_ | / ------------------ ---
| |_ | / | DSAP | |
| |_ | / | 1 byte | |
--- ------------------ / ------------------ |
| |_ OPTIONAL | / | SSAP | |
0 - 18 | |_ SRC | / | 1 byte | |
bytes | |_ ROUTING | / ------------------ | 8
| |_ INFO | / | CONTROL BTYE | | bytes
| |_ 0 - 18 bytes | / | 1 byte | |
--- ------------------ / ------------------ |
| |_ | |_ SNAP HEADER | |
| |_ | |_ 5 bytes | |
| |_ INFO FIELD | |_ | |
| |_ 1 - 4027 bytes | |_ | |
| |_ | |_ | |
| |_ | ------------------ ---
| |_ | |_ DDP HEADER | | 5 or
| |_ | |_ 5 or 13 bytes | | 13
--- ------------------ \\ |_ | | bytes
| | FCS | \\ |_ | |
| | 1 byte | \\ ------------------ ---
| ------------------ \\ |_ | |
3 bytes | | EDEL | \\ |_ DDP DATA | | 0 to
| | 1 byte | \\ |_ 0 - 586 bytes | | 586
| ------------------ \\ |_ | | bytes
| | FS | \\ |_ | |
| | 1 byte | \\ |_ | |
--- ------------------ \\ ------------------ ---
Token Ring Packet Data Information
- Maximum Token Ring Packet Size: 4051 bytes
- Minimum Token Ring Packet Size: 4 bytes
- Maximum TokenTalk Packet Size: 649 bytes
- Minimum TokenTalk Packet Size: 37 bytes