Hi, Fred (et al.),
On 5/23/2017 9:17 AM, Templin, Fred L wrote:
> Joe, I wanted to run an idea by you. We all know that IPv4 fragmentation has
> problems because of the 16-bit ID field. So, why not insert an IPv6 Fragment
> Header between the IPv4 header and the upper layer protocol data, then
> use IPv6-style fragmentation instead of IPv4 fragmentation?
IPv4 fragmentation has several impediments:
- small ID field
- lack of a reassembly checksum
- lack of a fixed-location flow ID
Using IPv6-Frag as the next header solves only the first of these. The
last is significant - putting a new header would defeat IPv4 flow ECMP
even for the first fragment. IPv6 includes a flow field that serves this
purpose.
Joe
_______________________________________________
Int-area mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/int-area
