RFC 9097 §2: Scope, Goals, and Applicability
The 6 Requirements of RFC 9097 §2, each quoted from the RFC with its state and the tests that prove it. Conformance explains the states.
| State | Requirements |
|---|---|
| Tested | 3 |
| Operational | 3 |
RFC9097-2-1
Operational
It is RECOMMENDED to discontinue non-measurement traffic that shares a subscriber’s dedicated resources while testing: measurements may not be accurate, and throughput of competing elastic traffic may be greatly reduced.
Note: Advice to the user running a Test.
RFC9097-2-2
Operational
It MUST only be used in the application of diagnostic and operations measurements as described in this memo.
Note: “It” is the Load Rate Adjustment Algorithm; RFC 9946 section 5.1 item 2 says the same.
RFC9097-2-3
Operational
It MUST only be used in circumstances consistent with Section 10 (“Security Considerations”).
Note: RFC 9946 section 5.1 item 11 says the same.
RFC9097-2-4
Tested
If a network operator is certain of the IP-Layer Capacity to be validated, then testing MAY start with a fixed-rate test at the IP-Layer Capacity and avoid activating the load adjustment algorithm.
Note: Fixed-Rate Test, Operator Key only; RFC 9946 section 5.1 item 10.
Proving tests:
crates/udpstp/tests/interop.rs::unauthenticated_and_fixed_rate_tests_interoperatecrates/udpstp/tests/loopback.rs::fixed_rate_tests_complete_over_loopback
RFC9097-2-5
Tested
However, the stimulus for a diagnostic test (such as a subscriber request) strongly implies that there is no certainty, and the load adjustment algorithm is RECOMMENDED.
Note: A Search Test is the default.
Proving tests:
crates/udpstp-core/tests/algorithm_b.rs::the_default_search_starts_at_row_0crates/udpstp-core/tests/parameter_ranges.rs::the_client_asks_for_the_defaults
RFC9097-2-6
Tested
Finally, the measurement system’s load rate adjustment algorithm SHALL NOT be provided with the exact capacity value to be validated a priori.
Note: A Search Test starts at the default row or a requested srIndexConf row, never at a known capacity.
Proving tests: