Capwap Mailing List: Issue #5: Benefits of Using UDP-Lite?

[Margaret Wasserman (margaret]

Magnus Westerlund raised some questions regarding why we are using  
UDP-Lite in
order to turn off UDP checksums on most of the CAPWAP packet.  These  
questions
need to be discussed and answered by the WG.

You have had the discussion. Can someone please recap what arguments  
was used to
indicate that you would have better performance by not using the UDP  
checksum
over the payload? I was under the impression that unless your capwap  
boxes are
running very special hardware the UDP checksuming was done in  
hardware on the
network controler. Thus there is no cost for doing the checksum. And  
it would
save the DTLS processing in the case the packet has a bad checksum.

I am trying to understand your argumentation here, not necessarily  
change it.

The issue was also raised that the reason to use UDP-Lite is for  
protocols that
actually want to receive partial/corrupted packets.  That doesn't  
seem to apply
to CAPWAP, so what is our reason for using it?