How long will it take to completely get rid of IPv4 or will it happen at all?

Tue Jun 30 00:58:38 UTC 2015

actually, 1500 byte frames require a very different buffering technique, since you have so many in flight at a given time.
if your old enough, this equates to the 53byte ATM cells when the data rates were in the Megabit range.

manning
bmanning at karoshi.com
PO Box 12317
Marina del Rey, CA 90295
310.322.8102

On 27June2015Saturday, at 15:58, Stephen Satchell <list at satchell.net> wrote:

> On 06/27/2015 11:48 AM, manning wrote:
>> This is kind of like asking when we will stop using ethernet framing
>> (ethernet was designed for a 3Mbps transmission rate) yet we are
>> deploying 100Gbps networks.  Still stuck on that 1500byte limitation.
>> When can we get rid of that?
> 
> Speed has nothing to do with frame size.  The 1500 byte limitation is more a function of the CRC algorithm.  (Oh, the initial frame size was selected for 3-mbit Ethernet so that collision mitigation was reasonable.)
> 
> Think about jumbo frames (9000 bytes) and their robust error detection.  Research is being done in even larger frames, because the rule is that as your transmission rate increases, you should increase the frame size and use a FRC algorithm that detects all one-bit errors and most two-bit errors, at least.