The size of the RPI buffer pool. In systems which are not using BGP auto-discovery there will be no RPI join and this field has no effect. This determines the maximum number of buffers that can exist at once for the RPI pool. DC-L2VPN Manager does not use pre-allocated pools, so the maximum number of buffers is also limited by memory availability, and so this number does not relate directly to memory usage. Buffer pools provide flow control, which is useful in ensuring efficient operation of the overall system. Setting any of the values to 0 gives infinite capacity buffer pools. This allows these pools to take up arbitrarily large amounts of memory, so is strongly discouraged. This field is not suitable for network administrators. This field cannot be changed after initial creation of the entity. Instead of changing this field, create a new DC-L2VPN Manager entity with the new value and destroy the old entity.