Debugger General Information
RARP/ARP Protocol Modules
The Reverse Address Resolution Protocol (RARP) basically consists of an
3waiting for an answer. The RARP server fills an Ethernet reply packet up with the target’s Internet Address and sends it.
The Address Resolution Protocol (ARP) basically provides a method of converting protocol addresses (e.g., IP addresses) to local area network addresses (e.g., Ethernet addresses). The RARP protocol module supports systems which do not support the BOOTP protocol (next paragraph).
BOOTP Protocol Module
The Bootstrap Protocol (BOOTP) basically allows a diskless client machine to discover its own IP address, the address of a server host, and the name of a file to be loaded into memory and executed.
TFTP Protocol Module
The Trivial File Transfer Protocol (TFTP) is a simple protocol to transfer files. It is implemented on top of the Internet User Datagram Protocol (UDP or Datagram) so it may be used to move files between machines on different networks implementing UDP. The only thing it can do is read and write files from/to a remote server.
Network Boot Control Module
The "control" capability of the Network Boot Control Module is needed to tie together all the necessary modules (capabilities) and to sequence the booting process. The booting sequence consists of two phases: the first phase is labeled "address determination and bootfile selection" and the second phase is labeled "file transfer". The first phase will utilize the RARP/BOOTP capability and the second phase will utilize the TFTP capability.
Network I/O Error Codes
162Bug returns an error code if an attempted network operation is unsuccessful.
MVME162 Embedded Controller Installation Guide |
