On Dec 6, 2007, at 6:27 AM, Russ White wrote:
I agree. An ITR-ETR scheme with mapping updates which take a few
seconds to be implemented in all ITRs provides a whole new global
system for highly optimised mobility - for both IPv4 and IPv6, with
few new host requirements.
But.... A few seconds is probably too long for it to be useful in a
mobile environment.
A few seconds is more than sufficient to deal with a number of
portability and migration use cases. In particular, anything that is
quick enough so that TCP connections don't break is extremely
interesting.
This isn't to say that this type of delay is acceptable for all
mobility use cases. You'd probably be pretty upset if your cell
phone cut out for two seconds at the edge of every cell. However,
for cases where your laptop transitions from WiFi to wired Ethernet,
a few seconds to transition seems eminently doable and beneficial.
Tony
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