A networked computer system and method of communicating classify request packets into multiple classes, with one class devoted to non-propagable requests that may be handled locally by destination nodes in the computer system. The multiple classes of requests are separately handled in the networked computer...http://www.google.de/patents/US6006255?utm_source=gb-gplus-sharePatent US6006255 - Networked computer system and method of communicating using multiple request packet classes to prevent deadlock
