[evla-sw-discuss] MIB Data Port Spec revisions

[James Robnett]

    We had a Linux box with a 2.4.18 kernel that was doing this.   It 
fragmented NFS packets incorrectly.

   I would recommend keeping the packets below the standard MTU (1500)
but the original statement is correct ... you don't need to worry about
the actual framing of fragments.  If you have a data block greater than
the MTU the IP stack on the MIB will take care of fragmentation.

James

On Friday 31 October 2003 05:10 pm, Barry Clark wrote:
> > are
> > unequivocal and unambiguous in asserting that neither TCP
> > nor UDP need concern themselves with fragmentation,
> > and that fragmentation is handled at the IP layer.
>
> Better ask James.  He has said that some switches do not do the right
> thing with fragmented UDP messages (they request resends for the fragments,
> so that it appears to work but generates excessive network trafic).  If
> our switches are of this breed, I'd still say we should stick to within
> the MTU.