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1. config d1 downlink as redundant
2. sync d1

3. cnaas-curl https://localhost/api/v1.0/device/a1/interfaces -d '{"interfaces": {"Ethernet28": {"configtype": "ACCESS_UPLINK", "data": {"neighbor": "d2"}}}}' -X PUT -H "Content-Type: application/json"

4. sync config a1

5. flap port on d2 to get unstuck in port-channel fallback mode?
   flap port on a1 to recover errdisable
   wait for lldp neighbors

6. curl -ks -H "Authorization: Bearer $JWT_AUTH_TOKEN" ${CNAASURL}/api/v1.0/linknets -X POST -d '{"device_a": "d2", "device_a_port": "Ethernet47", "device_b": "a1", "device_b_port": "Ethernet28"}' -H "Content-Type: application/json"

7. sync config d2

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