In order to ensure backward compatibility with RADIUS as well as
Diameter, the following restrictions are imposed on extensions considered
by the RADIUSEXT WG:
- All work MUST be backward compatible with existing RADIUS RFCs,
including RFCs 2618-2621, 2865-2869, 3162, 3575, 3576, 3579, and 3580.
- All work MUST be compatible with equivalent facilities in Diameter.
- The RADIUS maximum packet size (4K) will not be increased.
- No new RADIUS transports (e.g. TCP, SCTP) will be defined.
- New attributes which contain sub-attributes must use only one level of
nesting, and be compatible with the construction used for VSAs in RFC
2865.
- The RADIUS maximum packet size (4K) will not be increased.