This assigns the hub-and-spoke role, none(1), hub(2), or spoke(3), of a specific interface's service instance within a VSI that has hub-spoke topology enabled. Admins use this per-connection setting to designate which access connections act as the central hub (able to reach all spokes) and which act as spokes (able to reach only the hub), enforcing the topology set by hh3cVsiEnableHubSpoke on the parent VSI. For example, an admin designating a central data-center uplink as the hub would set hh3cVsiXconnectHubSpoke to hub(2) on that interface's xconnect entry, while remote branch connections would be set to spoke(3).