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Old January 20th, 2007   #1
Task Group Member
Join Date: Jun 2006
Posts: 181
Default Discovery Response Preamble

PLEASE remember that a controller is required to cope with a variable number of preamble bytes in responses to Discovery commands.

This is cleary stated in the last paragraph of section 7.5.

... The controller shall be able to process response packets with 0-7 bytes of preamble

I have now encountered two controllers that could not cope with this!

This would make them NON-COMPLIANT - but might only show up when they were used in conjunction with one or more layers of splitters.

If you are interested I now have special test responders that can vary the number of preamble bytes returned ...


Peter Willis
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