Messages in this thread | | | Date | Sat, 23 Oct 1999 17:59:28 -0600 (MDT) | From | Todd <> | Subject | Re: RFC: fragmentation code experiment |
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On Sun, 24 Oct 1999, Alan Cox wrote:
> > 2) modern networks almost never produce out-of-order fragments for packets > > that are eventually accepted (this is a premise--needs to be tested). > > NFS produces zillions of them
UDP only currently, right? How does NFS product out-of-order fragments on local networks on a regular basis? Is this all NFS implementations, or just linux.
> > 3) workstations and server that do no fragment reassembly or at least no > > out-of-order fragment reassembly would have simpler (and > > better-performing) network code. > > Nope, its not on the fast path
But the code would still be simpler, no?
> > 4) if fragment reassembly (out-of-order or not) needs to be done, it > > should be done by border routers (where people are increasingly willing to > > do computationally intensive stuff like filter and reassemble fragments). > > We support this for internet stuff. However most fragmented packets are > local
This is the part i could use some help understanding. As i understand it, fragmentation only happens at routing when two links have different MTUs. Is this covered by what you mean by 'local'?
todd todd@unm.edu
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