This read-only field reports the setting type behind the active interface-limit value for Neighbor Binding entries, indicating how that limit was derived rather than the limit itself. It helps an admin distinguish whether the interface cap in effect came from an explicit policy configuration or from a platform default, which matters when troubleshooting unexpected binding drops. For instance, if the type shows the value came from a default rather than an admin-set override, the admin knows to check the policy configuration to change it.