RFC 6733 — Diameter Base Protocol⚓︎
Specification: IETF RFC 6733 · Network: 4G, 5G · Applies to: MME, HSS · Interfaces: S6a, S13
The assessed implementations declare compatibility with RFC 3588; RFC 6733 obsoletes it without changing the assessed behaviour.
Mandatory items: 72, of which 72 supported. A further 95 clauses of the specification carry no conformance requirement and are not listed.
Mandatory items⚓︎
| Ref. | Item | Status | Support | Remarks |
|---|---|---|---|---|
| 2.1 | Transport | Mandatory | Supported | |
| 2.1.1 | SCTP Guidelines | Mandatory | Supported | |
| 2.4 | Application Identifiers | Mandatory | Supported | |
| 2.6 | Peer Table | Mandatory | Supported | |
| 3.0 | Diameter Header | Mandatory | Supported | |
| 3.2 | Command Code ABNF specification | Mandatory | Supported | |
| 4.1 | AVP Header | Mandatory | Supported | |
| 4.1.1 | Optional Header Elements | Mandatory | Supported | |
| 4.2 | Basic AVP Data Formats | Mandatory | Supported | Applicable ones are supported |
| 5.0 | Diameter Peers | Mandatory | Supported | |
| 5.1 | Peer Connections | Mandatory | Supported | |
| 5.3 | Capabilities Exchange | Mandatory | Supported | |
| 5.3.1 | Capabilities-Exchange-Request | Mandatory | Supported | |
| 5.3.2 | Capabilities-Exchange-Answer | Mandatory | Supported | |
| 5.3.3 | Vendor-Id AVP | Mandatory | Supported | |
| 5.3.5 | Host-IP-Address AVP | Mandatory | Supported | |
| 5.4 | Disconnecting Peer Connections | Mandatory | Supported | |
| 5.4.1 | Disconnect-Peer-Request | Mandatory | Supported | |
| 5.4.2 | Disconnect-Peer-Answer | Mandatory | Supported | |
| 5.4.3 | Disconnect-Cause AVP | Mandatory | Supported | |
| 5.5 | Transport Failure Detection | Mandatory | Supported | |
| 5.5.1 | Device-Watchdog-Request | Mandatory | Supported | |
| 5.5.2 | Device-Watchdog-Answer | Mandatory | Supported | |
| 5.5.3 | Transport Failure Algorithm | Mandatory | Supported | |
| 5.5.4 | Failover and Failback Procedures | Mandatory | Supported | |
| 5.6 | Peer State Machine | Mandatory | Supported | |
| 5.6.1 | Incoming connections | Mandatory | Supported | |
| 5.6.2 | Events | Mandatory | Supported | |
| 5.6.3 | Actions | Mandatory | Supported | |
| 5.6.4 | The Election Process | Mandatory | Supported | |
| 6.0 | Diameter Message Processing | Mandatory | Supported | |
| 6.1 | Diameter Request Routing Overview | Mandatory | Supported | |
| 6.1.1 | Originating a Request | Mandatory | Supported | |
| 6.1.2 | Sending a Request | Mandatory | Supported | |
| 6.1.3 | Receiving Requests | Mandatory | Supported | |
| 6.1.4 | Processing Local Requests | Mandatory | Supported | |
| 6.1.5 | Request Forwarding | Mandatory | Supported | |
| 6.1.6 | Request Routing | Mandatory | Supported | |
| 6.1.7 | Redirecting Requests | Mandatory | Supported | |
| 6.2 | Diameter Answer Processing | Mandatory | Supported | |
| 6.2.1 | Processing Received Answers | Mandatory | Supported | |
| 6.3 | Origin-Host AVP | Mandatory | Supported | |
| 6.4 | Origin-Realm AVP | Mandatory | Supported | |
| 6.5 | Destination-Host AVP | Mandatory | Supported | |
| 6.6 | Destination-Realm AVP | Mandatory | Supported | |
| 6.7 | Routing AVPs | Mandatory | Supported | |
| 6.7.1 | Route-Record AVP | Mandatory | Supported | |
| 6.8 | Auth-Application-Id AVP | Mandatory | Supported | |
| 6.9 | Acct-Application-Id AVP | Mandatory | Supported | |
| 6.11 | Vendor-Specific-Application-Id AVP | Mandatory | Supported | |
| 6.12 | Redirect-Host AVP | Mandatory | Supported | |
| 6.13 | Redirect-Host-Usage AVP | Mandatory | Supported | |
| 6.14 | Redirect-Max-Cache-Time AVP | Mandatory | Supported | |
| 6.15 | E2E-Sequence AVP | Mandatory | Supported | |
| 7.0 | Error Handling | Mandatory | Supported | |
| 7.1 | Result-Code AVP | Mandatory | Supported | |
| 7.1.3 | Protocol Errors | Mandatory | Supported | |
| 7.1.4 | Transient Failures | Mandatory | Supported | |
| 7.2 | Error Bit | Mandatory | Supported | |
| 8.0 | Diameter User Sessions | Mandatory | Supported | |
| 8.3 | Server-Initiated Re-Auth | Mandatory | Supported | |
| 8.5 | Aborting a Session | Mandatory | Supported | |
| 8.6 | Inferring Session Termination from Origin-State-Id | Mandatory | Supported | |
| 8.8 | Session-Id AVP | Mandatory | Supported | |
| 8.11 | Auth-Session-State AVP | Mandatory | Supported | |
| 8.14 | User-Name AVP | Mandatory | Supported | |
| 8.15 | Termination-Cause AVP | Mandatory | Supported | |
| 8.16 | Origin-State-Id AVP | Mandatory | Supported | |
| 11.4.1 | Result-Code AVP Values | Mandatory | Supported | |
| 11.4.3 | Termination-Cause AVP Values | Mandatory | Supported | |
| 11.4.4 | Redirect-Host-Usage AVP Values | Mandatory | Supported | |
| 11.5 | Diameter TCP/SCTP Port Numbers | Mandatory | Supported |
Optional items⚓︎
The specification leaves these 23 items to the implementation; 4 are supported or partially supported. An item marked Not applicable belongs to an area the platform does not provide, named in the Support column. Expand for the full list.
23 optional items
| Ref. | Item | Support | Remarks |
|---|---|---|---|
| 2.2 | Securing Diameter Messages | Not supported | |
| 2.7 | Realm-Based Routing Table | Supported | Using static configuration. |
| 4.3 | Derived AVP Data Formats | Supported | |
| 5.2 | Diameter Peer Discovery | Not supported | Peers are statically configured; dynamic peer discovery is not used. |
| 5.3.4 | Firmware-Revision AVP | Not supported | |
| 5.3.6 | Supported-Vendor-Id AVP | Not supported | |
| 5.3.7 | Product-Name AVP | Not supported | |
| 7.1.1 | Informational | Not supported | |
| 7.1.2 | Success | Supported | |
| 7.1.5 | Permanent Failures | Not supported | |
| 7.3 | Error-Message AVP | Not supported | |
| 7.4 | Error-Reporting-Host AVP | Not supported | |
| 7.5 | Failed-AVP AVP | Not supported | |
| 7.6 | Experimental-Result AVP | Not supported | |
| 7.7 | Experimental-Result-Code AVP | Not supported | |
| 8.1 | Authorization Session State Machine | Not supported | |
| 8.7 | Auth-Request-Type AVP | Not supported | |
| 8.9 | Authorization-Lifetime AVP | Not supported | |
| 8.10 | Auth-Grace-Period AVP | Not supported | |
| 8.13 | Session-Timeout AVP | Supported | |
| 8.18 | Session-Server-Failover AVP | Not supported | |
| 8.19 | Multi-Round-Time-Out AVP | Not supported | |
| 8.21 | Event-Timestamp AVP | Not supported |
Assessed 2026-09-15 against RFC 6733.