Ole
Maybe we could sort this out faster with a short phone call.
As I read the spec it says hunt for a new upper limit every 10 mins,
won't there be packet as it sends out oversized packets looking for a
higher MTU?
Stewart
On 14/02/2017 18:33, otr...@employees.org wrote:
Stewart,
*If* you care about packet loss, then your only option is to probe the path
with with
synthetic data that exactly mimics the live data, or not to probe at all and
live
with the 1280. As I said 1280 is pretty close to 1496 which is all most networks
will give you in practice.
Yes, but sending at 1280 does not work for IP tunnels. The whole purpose of the
minimum MTU was to give space for tunnel headers (1500-1280).
When I think about the people asking for fast re-route to minimise packet loss,
it seems
very strange to deliberately induce loss to try to stretch the MTU by 15%.
Please show the data that there is significant loss. The measurements I have
found has not shown that.
If not, then let's please leave that argument on the shelf.
(And please don't read me wrong, I think we should get DNS fixed, that we
should fix the IP tunnelling protocols, and that we should get IP fragmentation
deprecated).
But right here, right now. PMTUD is for many problems the only solution on the
table.
We as a community can choose not to elevate the standard of course, and that
will of course not have any big consequence.
Are you afraid that elevating 1981, will hinder people from working on new and
better solutions?
Best regards,
Ole
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