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ngdir-minutes-94jul.txt
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1994-11-01
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IPNG Directorate (NGDIR)
Reported by Scott Bradner/Harvard University
The IPng Directorate held an open meeting on Monday afternoon. The
session was a joint meeting with the IPNGWG BOF. The format was that the
IPng Directorate sat at the front of the room and invited questions from
the attendees:
o What is the expected/necessary address assignment efficiency of
IPng addressing proposals? This question should be asked tomorrow
at the Address Autoconfiguration BOF (ADDRCONF).
o What is the relationship of private IPv4 addresses (``net 10'') and
IPng addresses? This needs to be covered. Large users need to get
large blocks of addresses with no questions asked. There is also
concern about the relationship of mobility and autoconfiguration.
What is the effect of mobility and autoconfiguration of addresses
with authentication (how do you authenticate with a changing IPng
address unless you use an EID?).
o The opinion that 16 byte addresses are too big was expressed.
o What is the trade-off between time (getting the protocol done
quickly) versus getting autoconfiguration and security into the
protocol? Autoconfiguration and security are important carrots to
get people to use IPng. The trade-off between making IPng better
than IP (so people will use it) versus keeping IPv4 to be as good
as it can be.
o We sound like we are not quite done, sort of like IP TOS. True, but
we are older and wiser now.
o DNS is not very robust, let's not depend upon it (it is ``already
breaking''). The network is growing, adding autoregistration, and
security depends upon DNS. Much of the problem with DNS is the
implementation, not the specification.
o Concern was expressed about IPng and scaling, e.g., exponential
address space growth, address space density, and flows. The claim
is that in practice the limit in routers is destinations per
second. There is also concern about source routing---what service
provider will allow users control over routes? EIDs are evil.
o It was stated that in order to put flow state into routers we need
to be able to aggregate flows.
o Concern was expressed about address autoconfiguration. Host
configuration is a host management issue. Management software at a
high level is needed.
o The opinion was expressed that we must focus on/stick to the
schedule. Commit to keeping to the schedule and solving problems
that we know how to solve.
During the IPNGWG BOF part of the meeting, Steve Deering presented the
working group charter.