On 6/1/2016 12:16 AM, Xuxiaohu wrote: > 1320 is not a problem at all. Many modern routers can even support 9000-byte > and even large MTU.
Routers aren't typically the problem; links are. Yes, you can engineer a system to use links that give enough headroom for many layers of encapsulation. Avoiding fragmentation is always better than doing fragmentation and reassembly -- when you can do so. However, unless you're calling this "IP in UDP but only over jumbo ethernet", you need to account for the possibility (probability) that a path may end up going over links that support only the minimums. And that assumes you believe vendors follow what you call "academic documents" (i.e., RFC standards). If they don't, you can't even assume the minimums. IP isn't designed to work efficiently; it's designed to work everywhere. Joe _______________________________________________ Int-area mailing list Int-area@ietf.org https://www.ietf.org/mailman/listinfo/int-area
