The OnBoard is aware of only a single interface to the private network: priv0. for communicating with the connected devices. priv0 sends packets to and receives packets from the 24 or 40 private Ethernet ports.Private Ethernet ports on the OnBoard are connected to the service processors’ or other device’s dedicated Ethernet ports.Each private Ethernet port may be connected to multiple service processors, for example through a blade manager that has multiple service processors, and in those cases a single private Ethernet port may require multiple IP addresses.All communication among private Ethernet ports are blocked unless priv0 is the sending or receiving port.