Is it necessary to distinguish (have both) a port-id and a connection-endpoint-id or is it just unnecessary complexity? If no, which should there be and why? If yes, why? What role do they play?
a) No, it is unnecessary complexity; only a port-id is needed for simplicity.
b) No, it is unnecessary complexity; only a connection-endpoint-id is needed for simplicity.
c) Yes, both are necessary for a comprehensive network structure.
d) Yes, but either a port-id or a connection-endpoint-id is sufficient for effective networking.