Redundant communication infrastructure for an IPv6 routing network based on a special router

摘要

The invention relates to a network node with a routing function for switching IPv6 data packets on the basis of their destination and source address, comprising: a number of bidirectional data interfaces to network nodes of a higher hierarchical level (uplinks) a different number of bidirectional data interfaces to network nodes of a lower hierarchical level (downlinks) - Memory for own router address and routing field, - Prefix table for storing address prefixes per uplink, - Switching unit for data packets with access to address memory, routing field and prefix table, - Control panel, for manual input and visual output, - Internal packet interface for inserting and extracting control packets and from the data interfaces, - own address configuration and routing field with access to keypad and internal packet interface, where the router address always begins with the label K, which, depending on the hierarchy level, specifies a number of 4-bit Fe The routing field specifies the part of the destination addresses of the packets which is evaluated by the network node for forwarding via the downlink interfaces and which is so many 4-bit fields large that all downlinks can be addressed, with the allocation unit being established Dependency of the own address, the routing field and the prefix table to assign a received data packet to an output, whereby the internal packet interface can receive control packets from all data interfaces and can send control packets to all data interfaces.