The "TCP-Option-Type" AVP
The "TCP-Option-Type" Diameter AVP, which is of type Enumerated, uses the AVP code "541".
It has the MANDATORY flag, the MAY-ENCRYPT flag.
It is part of the TCP-Option grouped AVP.
It is an enumerated AVP, which can hold the following values:
| Name | Integer value |
|---|---|
| End of Option List | 0 |
| No-Operation | 1 |
| Maximum Segment Size | 2 |
| Window Scale | 3 |
| SACK Permitted | 4 |
| SACK | 5 |
| Echo | 6 |
| Echo Reply | 7 |
| Timestamps | 8 |
| Partial Order Connection Permitted | 9 |
| Partial Order Service Profile | 10 |
| CC | 11 |
| CC.NEW | 12 |
| CC.ECHO | 13 |
| TCP Alternate Checksum Request | 14 |
| TCP Alternate Checksum Data | 15 |
| Skeeter | 16 |
| Bubba | 17 |
| Trailer Checksum Option | 18 |
| MD5 Signature Option | 19 |
| SCPS Capabilities | 20 |
| Selective Negative Acknowledgements | 21 |
| Record Boundaries | 22 |
| Corruption experienced | 23 |
| SNAP | 24 |
| TCP Compression Filter | 26 |
| Quick-Start Response | 27 |
| User Timeout Option | 28 |
| TCP Authentication Option (TCP-AO) | 29 |
| Multipath TCP (MPTCP) | 30 |
| TCP Fast Open Cookie | 34 |
| RFC3692-style Experiment 1 | 253 |
| RFC3692-style Experiment 2 | 254 |
| MOOD | 25 |
| Update source | Insertion date |
|---|---|
| Wireshark | 2026-04-26 07:12 |
| Diafuzzer | 2026-04-26 07:14 |