Optical network system node, and RPR interface card

摘要

RPR nodes constituting the packet ring, and the destination address of the IP packet and the node ID received from the line cards to transmit and receive IP packets between the external network based on a ring topology node ID, ring ID, and IP address RPR and part of the two sheets are connected to each other to input and output between the packet ring side or the line card side of each of the IP packets and ring packet based on, from the line card and ring packet from the RPR of the two and a packet processing unit configured to switch each transfer path of an IP packet, it is possible to continue communication to the RPR card replacement, can measure the cost by reducing of RPR card number, one of the redundancy of the packet and ring redundancy RPR card Even when using the configuration of the redundancy that is suitable for the network topology can be, and allows the shortest path selected shortest path selection, the optimal path selection, the best path selection.