Taipei, Taiwan, 2011-12-23

Auto IP (Automatic IP Address Assignment)

ORing is pleased to announce a handy new technology for railway networking and other industrial uses: Auto IP, the automatic IP address assignment for the managed network topology.

IP address reassignment is needed to maintain proper functionality of network topology and its management whenever the EMU railcar reverses traveling direction or whenever individual carriages of the EMU are repositioned or replaced. With tight railway transportation schedule, especially around holidays and days of important events, it is important that IP address reassignment is done efficiently and effortlessly. With ORing's Auto IP technology, the IP address reassignment is done automatically with a single command, and therefore the IP address assignment throughout the railcar network topology would always be consistent with the given set of IP address assignment rules, making it possible to easily identify the relative position of a given network device just by looking at its network IP address.

To understand how ORing's Auto IP works, let's look at some instances. For example, suppose the IPC of the EMU head is always assigned as 192.168.2.1; the next carriage is assigned as 192.168.2.2; and so on... When the EMU reverses traveling direction, the IPC of the EMU tail is now reassigned as 192.168.2.1 and becomes the new head; the next carriage is assigned as 192.168.2; and so on... Another example would be carriage insertion. Let's say a carriage is inserted between Car 2 (192.168.2.2) and Car 3 (192.168.2.3). The former Car 3 and all of its following carriages would have each of their order numbers incremented by 1 (so the former Car 3 would now become the new Car 4, and so on...), and the inserted carriage would now become the new Car 2. With ORing Auto IP's single command, all of the carraiges' IP addresses are conveniently reassigned so each carriage's IP address stays consistent with its relative position with respect to the head carriage. Similarly, after removal of carriage(s) or position reassignments of existing carriages, the IP address assignments of the entire EMU would always be consistent with the given set of IP assignment rules after executing ORing's Auto IP.

Example 1 : EMU reverses traveling direction.

Example 2: A carriage is inserted into the EMU.

Hardware Bypass

Redundancy technologies are great for network topologies. As one node fails, the system quickly finds another path and continues to run again. However, if two or more nodes fail in a ring structure, or if just one node fails in a daisy chain structure, the network would be irrecoverable until the node problems are solved.