F37-CX: Yes

Rationale

A congested CCNx forwarder can discard an Interest and return Congestion to its preceding hop. That hop can select another available next hop or clear the pending state and propagate the failure.

Assessment method

Primary packet semantics and forwarding-policy review

Source context

NDN packet format v0.3 and CCNx RFC 8569

Outstanding qualification

Explicit optional behavior from sections 2.4.4 and 10.3. Not a specified queue estimator, continuous rate controller or guarantee of an alternative path. Executable integration remains unqualified.

Public sources

https://www.rfc-editor.org/rfc/rfc8569.html#section-10.3.7

Editorial evidence references

The following identifiers refer to research records not included in this public package; they are not public links.

round689.html