I don't mind letting the client premises routers break down 9000 byte packets. My ISP controls end to end connectivity. 80% of people even let our techs change settings on their computer, this would allow me to give ~5% increase in speeds, and less network congestion for end users for a one time $60 service many people would want. It's also where the internet should be heading... Not to beat a dead horse(re:ipv6 ) but why hasn't the entire internet just moved to 9000(or 9600 L2) byte MTU? It was created for the jump to gigabit... That's 4 orders of magnitude ago. The internet backbone shouldn't be shuffling around 1500byte packets at 1tbps. That means if you want to layer 3 that data, you need a router capable of more than half a billion packets/s forwarding capacity. On the other hand, with even just a 9000 byte MTU, TCP/IP overhead is reduced 6 fold, and forwarding capacity needs just 100 or so mpps capacity. Routers that forward at that rate are found for less than $2k.
On 18 January 2018 at 23:31, Vincent Bernat <ber...@luffy.cx> wrote: > ❦ 18 janvier 2018 22:06 -0700, Michael Crapse <mich...@wi-fiber.io> : > > > Why though? If i could get the major CDNs all inside my network willing > to > > run 9000 byte packets, My routers just got that much cheaper and less > > loaded. The Routing capacity of x86 is hindered only by forwarding > > capacity(PPS), not data line rate. > > Unless your clients use a 9000-byte MTU, you won't see a difference but > you'll have to deal with broken PMTUD (or have your routers fragment). > -- > Many a writer seems to think he is never profound except when he can't > understand his own meaning. > -- George D. Prentice >
