On Jan 15, 2014, at 10:31 PM, Leo Bicknell <bicknell@ufp.org> wrote:
I am approaching it from a different perspective, 'where is PMTU-D broken for people who want to use 1500-9K frames end to end?'
I understand that perspective, absolutely. But what I'm saying is that that whether or not they want to use jumbo frames for Internet traffic, it doesn't matter, because PMTU-D is likely to be broken either at the place where the traffic is initiated, the place where the traffic is received, or both - so any nonsense in the middle, especially on IXP networks in particular, isn't really a significant issue in and of itself. If we could get things optimized and remediated to the point where potential PMTU-D breakage in IXP networks were a significant issue of iteself, the Internet would be much improved. But I don't see any likelihood of that happening anytime soon. ----------------------------------------------------------------------- Roland Dobbins <rdobbins@arbor.net> // <http://www.arbornetworks.com> Luck is the residue of opportunity and design. -- John Milton