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<font size=3>At 12:13 PM 6/3/2005, Sean Hefty wrote:<br>
<blockquote type=cite class=cite cite="">Fab Tillier wrote:<br>
<blockquote type=cite class=cite cite="">Ok, so this question is from a
noob, but here goes anyway. Why can't IPoIB<br>
advertise a larger MTU than the UD MTU, and then just fragment large
IP<br>
packets up if they need to go over the IB UD transport? Is there
any reason<br>
this couldn't work? If it does, it allows IPoIB to expose a single
MTU to<br>
the OS, and take care of the rest under the covers.<br>
Just a thought.</blockquote><br>
I don't remember seeing a response to this. Something like this
could work. I guess one disadvantage is that it can be less
efficient if you lose a lot of packets. TCP would resend an entire
MTU (as seen by TCP) of data if only a single IB packet were lost.<br>
</blockquote><br>
Why not just use the IETF draft for RC / UC based IP over IB and not
worry about creating something new? <br><br>
Mike</font></body>
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