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<P><FONT SIZE=2 FACE="Arial">Hello, </FONT>
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<P><FONT SIZE=2 FACE="Arial">I'm wondering if anyone could tell me how interleaving FIFO, CAUSAL, AGREED and SAFE messages works.</FONT>
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<P><FONT SIZE=2 FACE="Arial">I'm developing an application level protocol and would like to use the cheapest primatives possible.</FONT>
<BR><FONT SIZE=2 FACE="Arial">Generally for most of the protocol I'd naturally choose either CAUSAL or AGREED, but I am wondering if I do</FONT>
<BR><FONT SIZE=2 FACE="Arial">a series of these and then do a SAFE message, will the SAFE message flush out all the undelivered CAUSAL and AGREED</FONT>
<BR><FONT SIZE=2 FACE="Arial">messages and then deliver the SAFE message? I.e. does spread provide any guarantees across these types?</FONT>
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<P><FONT SIZE=2 FACE="Arial">Also I'm assuming</FONT>
<BR><FONT SIZE=2 FACE="Arial">FIFO implements fbcast</FONT>
<BR><FONT SIZE=2 FACE="Arial">CAUSAL implements cbcast</FONT>
<BR><FONT SIZE=2 FACE="Arial">AGREED implements cabcast</FONT>
<BR><FONT SIZE=2 FACE="Arial">and wonder if I'm correct. Also is SAFE an dynamically safe implementation of gbcast, and does it provide an order consistant with CAUSAL or AGREED?</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Thanks for your help.</FONT>
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<P><FONT SIZE=2 FACE="Arial">Regards,</FONT>
<BR><FONT SIZE=2 FACE="Arial">Michael</FONT>
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<P><FONT SIZE=2 FACE="Arial">----</FONT>
<BR><FONT SIZE=2 FACE="Arial">Dr Michael Pilling</FONT>
<BR><FONT SIZE=2 FACE="Arial">C3I Division</FONT>
<BR><FONT SIZE=2 FACE="Arial">DSTO</FONT>
<BR><FONT SIZE=2 FACE="Arial">PO Box 1500</FONT>
<BR><FONT SIZE=2 FACE="Arial">Edinburgh SA 5111</FONT>
<BR><FONT SIZE=2 FACE="Arial">Phone: 08 8259 7017 Fax: 08 8259 5589</FONT>
<BR><FONT SIZE=2 FACE="Arial">email: Michael.Pilling@dsto.defence.gov.au</FONT>
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