In article <3ac60a21-4aee-d742-bedc-5be3a4e65471@xxxxxxxx>, Michael Thomas <mike@xxxxxxxx> wrote: >So the long and short of this entire issue seems to be is, is the >uncaught error rate serious enough that warrant rethinking weak >transport and frankly L2 layer error detection? ... Having read the papers that Craig referenced, that's my interpretation. One of them is about a big physics application which sends multiple terabytes of data over the net using what looks like a version of FTP that transfers several files at once. They send the data as a lot of of 4 gig files. When they started verifying file checksums, they found about 20% of the received files were corrrupted in transit. In that application they resend the corrupt files and they obviously need make the files smaller. But retransmitting a file at a time seems a lot less efficient than improving the checksums and using the existing TCP packet level retransmission. -- Regards, John Levine, johnl@xxxxxxxxx, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly
