This object sets the maximum number of prefixes that can be learned from this specific neighbor; exceeding it closes the connection and sets the state to Idle until the administrator manually clears it. Administrators use this as a per-peer safety limit against a single misbehaving or compromised neighbor flooding routes, distinct from the aggregate limit across all peers. For example, an engineer sets csBgpNbrMaxPfx to 100 for a small customer expected to advertise only a handful of prefixes, so an accidental full-table leak from that customer's router immediately shuts the session down rather than overwhelming this VR.