If you want your switch to support full functionality, you have to consider all 
the fileds of the header. Otherwise and for experiments, you can support only a 
subset of the header fields. You have to be careful in raising an error, or 
omitting extra field when controller request adding or modifying flow entries 
that contain header field which your switch doesn't support.
In openflow switch v1.4, tables have the same structure, but may contain 
different flow entries based on the functionality.
     On Thursday, 6 November 2014, 15:36, me a <mehdi_am...@hotmail.com> wrote:
   

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body.yiv7275046566ecxhmmessage {font-size:12pt;font-family:Calibri;}-->I have 
some questions about OpenFlow protocol.If we want to design and implement an 
OpenFlow switch according toversion 1.0, header fields of flow table must be 
exactly 12 tuples??? Infact we cannot have an OpenFlow switch with 5 tuples? In 
other words, headerfields of flow tables are considered by OpenFlow 
protocol?Another question is that, in version 1.1 to 1.4, we can have morethan 
one table in our design; the question is that each table should have allthe 
fields? for example if we have 5 tables and the number of header fieldsthat are 
recommended by protocol is 18 tuples,Each table in this design should have 18 
tuples or they aresegregated by their functions?Best Regards,Amini.   
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