<html>
<body>
<font size=3>At 10:49 AM 6/30/2005, Roland Dreier wrote:<br>
<blockquote type=cite class=cite cite=""> Michael>
Being the person who led the addressing definition for<br>
Michael> IB, I can state quite clearly that GID are
NOT IPv6<br>
Michael> addresses. They were intentionally
defined to have a<br>
Michael> similar look-n-feel since they were
derived in large part<br>
Michael> from Future I/O which had them as real
IPv6 addresses.<br>
Michael> But again, they are NOT IPv6
addresses.<br><br>
The IBA spec seems to have a different idea. In fact chapter 4
says:<br><br>
"A GID is a valid 128-bit IPv6 address (per RFC
2373)...."</blockquote><br>
I wrote the original spec here. The text was supposed to be updated
to clarify that the rest of the sentence, i.e. with additional rules,
etc. thus making it not a real IPv6 address from the IETF's perspective
but something quite close. The intention was to allow one to manage
the fabric by having mapping functions from traditional IP management
applications to IB GID to minimize the amount of work to enable IB within
a solution. <br><br>
Mike</font></body>
</html>