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<HTML><HEAD><TITLE>RE: DHCPv6 self-test RAND of .1 fails</TITLE>
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<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007>Hi Tammy,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007>Thank you for your =
report.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007>I would like to confirm your result which one =
is fail
case.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007>Coulde you send the logs to here or <A
href="mailto:contact@tahi.org">contact@tahi.org</A>, =
please?</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007>Best regards,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="ＭＳ =
Ｐゴシック" color=#0000ff size=2><SPAN =
class=024523702-19092007>Hideshi</SPAN></FONT></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> Leino, Tammy
[mailto:tammy_leino@mentor.com] <BR><B>Sent:</B> Wednesday, September =
19, 2007
6:27 AM<BR><B>To:</B> dhcptest@tahi.org<BR><B>Subject:</B> =
[dhcptest:00211]
Re: DHCPv6 self-test RAND of .1 fails<BR></FONT><BR></DIV>
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<P><FONT face=Arial size=2>I apologize for the multiple emails, =
but I wanted
to mention that the tests do not fail when RAND is -.1, which leads me =
to
believe there is an anomaly in the TAHI test suite when RAND is =
.1.</FONT></P>
<P><FONT face=Arial size=2>Best Regards,<BR>Tammy Leino</FONT> =
</P><BR>
<UL>
<P><FONT face=Arial><SPAN lang=en-us></SPAN></FONT><SPAN
lang=en-us> <FONT face=Tahoma size=1>-----Original
Message-----</FONT></SPAN> <BR><SPAN lang=en-us><B><FONT =
face=Tahoma
size=1>From: </FONT></B> <FONT face=Tahoma size=1>Leino, =
Tammy
</FONT></SPAN><BR><SPAN lang=en-us><B><FONT face=Tahoma
size=1>Sent: </FONT></B> <FONT face=Tahoma =
size=1>Tuesday,
September 18, 2007 5:19 PM</FONT></SPAN> <BR><SPAN =
lang=en-us><B><FONT
face=Tahoma size=1>To: </FONT></B> <FONT =
face=Tahoma
size=1>'dhcptest@tahi.org'</FONT></SPAN> <BR><SPAN =
lang=en-us><B><FONT
face=Tahoma
=
size=1>Subject: </FONT></B> =
<FONT
face=Tahoma size=1>DHCPv6 self-test RAND of .1 =
fails</FONT></SPAN> </P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Hello =
All,</FONT></SPAN> </P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Whenever my node =
generates a
RAND value of .1, the TAHI test suite fails for all max =
retransmission time
tests. It seems the TAHI test suite is interpretting the =
definition of
RAND in RFC 3315 as -.1 to .1 non-inclusive.</FONT></SPAN></P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Here is the =
situation for RFC
3315 test #37 when RAND is chosen as .1 in =
retransmissions:</FONT></SPAN>
</P>
<P><SPAN lang=en-us><FONT face=Arial size=2>First
retransmission</FONT></SPAN> <BR><SPAN lang=en-us><FONT =
face=Arial size=2>RT
= IRT + (RAND * IRT)</FONT></SPAN> <BR><SPAN lang=en-us><FONT =
face=Arial
size=2>RT = 1 + (.1 * 1)</FONT></SPAN> <BR><SPAN =
lang=en-us><FONT face=Arial
size=2>RT = 1.1</FONT></SPAN> </P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Second
retransmission</FONT></SPAN> <BR><SPAN lang=en-us><FONT =
face=Arial size=2>RT
= (2 * RTprev) + (RAND * RTprev)</FONT></SPAN> <BR><SPAN =
lang=en-us><FONT
face=Arial size=2>RT = (2 * 1.1) + (.1 * 1.1)</FONT></SPAN> =
<BR><SPAN
lang=en-us><FONT face=Arial size=2>RT = 2.31</FONT></SPAN> =
</P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Third
retransmission</FONT></SPAN> <BR><SPAN lang=en-us><FONT =
face=Arial size=2>RT
= (2 * RTprev) + (RAND * RTprev)</FONT></SPAN> <BR><SPAN =
lang=en-us><FONT
face=Arial size=2>RT = (2 * 2.31) + (.1 * 2.31)</FONT></SPAN> =
<BR><SPAN
lang=en-us><FONT face=Arial size=2>RT = 4.851</FONT></SPAN> =
</P>
<P><SPAN lang=en-us><FONT face=Arial size=2>The test fails =
here due to
"Actual RT is bigger than the expected maximum value". I am =
not sure
what the expected maximum value is.</FONT></SPAN></P>
<P><SPAN lang=en-us><FONT face=Arial size=2>First, can someone =
comment on
whether the TAHI test suite interprets the RAND values defined in =
RFC 3315
as inclusive or non-inclusive?</FONT></SPAN></P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Second, if the =
values are
supposed to be inclusive, can someone verify that this is a problem =
with the
TAHI test suite?</FONT></SPAN> </P>
<P><SPAN lang=en-us><FONT face=Arial size=2>Best =
Regards,</FONT></SPAN>
<BR><SPAN lang=en-us><FONT face=Arial size=2>Tammy =
Leino</FONT></SPAN>
</P></UL></BLOCKQUOTE></BODY></HTML>