Question

You are writing a Python script using the requests library to configure a new interface description on a Cisco IOS XE device via RESTCONF. You already retrieved the ietf-interfaces YANG model. Your PATCH request to /restconf/data/ietf-interfaces:interfaces/interface=GigabitEthernet2 keeps returning HTTP 400 with a 'malformed-message' error, even though your JSON keys match the leaf names. Which correction is most likely required to make the payload valid?

Accepted Answer

Wrap the interface data in a top-level namespaced key such as "ietf-interfaces:interface" so the JSON reflects the correct YANG module-qualified node.

Answer

Change the Accept and Content-Type headers to application/xml because RESTCONF PATCH does not support JSON payloads.

Answer

Replace the PATCH method with POST, since PATCH cannot be used to modify an existing interface resource.

Answer

Remove the interface key from the URL and instead send the interface name only inside the JSON body.