An outraged European Computer Manufacturers’ Association last year threw out proposals that IBM’s Logical Unit 6.2 SNA protocol, and the Advanced Processor to Processor Communications system that uses it should be incorporated into the definitions of the Open Systems Interconnection reference model – but they only scotched the snake, and this week it reared its head again. This time, representatives of the International Standards Organisation have written the IBM LU 6.2 and APPC into a draft proposal for the problematic high layer protocols. IBM’s competitors fear that IBM will be given an enormous advantage over them if LU 6.2 is selected.
