I can well believe we can, for a reasonable value of all, update all
host TCP and UDP engines with a small, migratable, change.
We can't change all host applications.
And we can not make a change that does not interoperate with existing hosts.
Yours,
Joel
On 11/11/2012 9:13 PM, Christian Huitema wrote:
> It does require a new suite of transport protocols
> ...
> the odds of ever reaching deployment on an approach which requires
us
> to abandon TCP and UDP are not good?
That's infeasible; you can't require changing all hosts. You need to see
if you can
come up with some approach that avoids that.
(E.g. if we have location-identity separatation deployed, you could hide
the new
locators from the hosts.)
I think that we are giving up too early on the feasibility of updating all
hosts. Indeed, any substantial change in routing and addressing would most
probably end up changing all hosts, or at least most of them. I also think
that a research group should not necessarily shy away from investigations
that affect all hosts. If research comes out with a brilliant shiny star on
the horizon, then engineering might follow. If the best we can do is hack on
the edges of current solutions, then engineering groups can definitely do
that, no need for a research group.
-- Christian Huitema
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