A digital data system employs multiple error protection mechanisms on messages that pass along a link interconnect fabric from one node or device to another node or device. The nodes may be end points (such as processor or storage units), or may be intermediate devices or branch points (such as routers...http://www.google.co.uk/patents/US7106742?utm_source=gb-gplus-sharePatent US7106742 - Method and system for link fabric error detection and message flow control
