This object sets the maximum number of prefixes that can be learned from each individual neighbor in this group; exceeding it closes that neighbor's connection and sets its state to Idle until manually cleared, overridable per neighbor. Administrators use group-level prefix limits to apply a consistent safety ceiling across many similar peers, such as all small business customers. For example, an engineer sets csBgpNbrGroupMaxPfx to 50 for a group of small-business customer peers, so any one of them accidentally leaking an excessive number of routes gets automatically shut down.