acket loss.
The allowed amount of reordering depends on TCP implementations
and can be controlled by upgrading TCP.
Masataka Ohta
.
because it's random
spray , caring about nothing except equal loading of the members.
Equal loading on point to point links between two routers by
(weighted) round robin means mostly same buffering delay, which
won't cause massive reordering.
Masataka
approach is to fully
share a single buffer by all the parallel links.
But as it is not compatible with router architecture
today, I did not proposed the approach.
Masataka Ohta
.
Especially because the real world includes labs and text
books and, as such, all the theories including all the wrong
ones exist in the real world.
Masataka Ohta
ul from the
beginning, which is why flow driven architecture including that of
MPLS is broken and hopeless.
I really hope you understand the meaning of "intelligent intermediate
entities" in the context of the E2E argument.
Masataka Ohta
egligible.
>
> So you mean, what... per-packet load balancing, in lieu of per-flow
> load balancing?
you now recognize that per-flow load balancing is not a very
good idea.
Good.
you are saying that.
See above to find my statement of "without hashing".
Masataka Ohta
in.
As I already told you:
: In theory, you can always fabricate unrealistic counter examples
: against theories by ignoring essential assumptions of the theories.
you are keep ignoring essential assumptions for no good purposes.
Masataka Ohta
t's your problem.
Masataka Ohta
of other traffic.
> Those
> conditions are rarely found in the real world.
It is usual that TCP consumes all the available bandwidth.
Exceptions, not so rare in the real world, are plain TCPs over
long fat pipes.
Masataka Ohta
parallel 25G links, which is an example of "equal speed multi
parallel point to point links", were relying on hashing?
Masataka Ohta
a non-rate-limited 10gig circuit
and
: The initial and recurring packet loss occurs on any flow of
: more than ~140 Mbit.
the problem is caused not by wire speed limitation of a "fat"
pipe but by artificial policing at 140M.
Masataka Ohta
ement of "higher speed flows".
Masataka Ohta
n practice there is.
In theory, you can always fabricate unrealistic counter examples
against theories by ignoring essential assumptions of the theories.
In this case, "Without buffer bloat" is an essential assumption.
Masataka Ohta
t to properly manage/operate
simple situations with equal speed multi parallel point to point links.
Masataka Ohta
, the situation is:
:Moreover, as David Hubbard wrote:
:> I've got a non-rate-limited 10gig circuit
So, if you internally have 10 parallel 1G circuits expecting
perfect hashing over them, it is not "non-rate-limited 10gig".
Masataka Ohta
There is no such algorithms because, as I wrote:
: 100 50Mbps flows are as harmful as 1 5Gbps flow.
Masataka Ohta
and after detecting flows.)
Masataka Ohta
anything within a couple of blocks.
you don't understand similar effectiveness by DOS.
I can also attest that there is at least one overlap between time-nuts and
NANOG
See above.
Masataka Ohta
a.org/wiki/Atomic_clock
Modern rubidium standard tubes last more than ten years,
and can cost as little as US$50.
https://www.ebay.com/sch/i.html?_nkw=rubidium
Masataka Ohta
r ordering of events.
Masataka Ohta
quired by the theory of special relativity for proper causality.
Masataka Ohta
locally.
Masataka Ohta
bad actors:
The question, seemingly, is not "how to build a secure stratum
1 server?".
BTW, the proper question should be "how to obtain secure time?".
Masataka Ohta
for centuries.
Rb clocks on GPS are a lot more frequently synchronized, because
a lot more accuracy is required for positioning (10ns of timing
error means 3m of positioning error).
Masataka Ohta
g/wiki/Relativity_of_simultaneity
For information theoretic simultaneity, you can consider, instead
of light cone, information cone.
Masataka Ohta
of years. There can be no
coordinated attacks. They may be remotely accessed through
secured NTP.
Masataka Ohta
root
servers today and is manageable.
Kerberos relies on KDCs.
However, the shared keys are shared by ends and intermediate
systems of KDCs, which is not end to end security.
Masataka Ohta
weight and inexpensive (or free)
PKI may worth its price and may be useful to make IP address
based security a little better.
Masataka Ohta
end to end
security and is not actually workable, why do you bother?
Masataka Ohta
See above for the proper solution.
Masataka Ohta
e IP and not bothering to give it some
time to settle :)
In this thread, I'm the first to have pointed out that old IP
addresses of root servers must be reserved (for 50 years).
Masataka Ohta
.
Masataka Ohta
problems.
Thank you for a devil's proof. That you haven't noticed any
problem does not mean there actually was no problem.
Masataka Ohta
.
Masataka Ohta
fficulties
to change the addresses.
Masataka Ohta
to be reasonable.
And, if the addresses are reserved, there is no
reason not to keep using the addresses as
alternative addresses of active root name servers.
Masataka Ohta
PS
First of all, it is a bad idea to change the
addresses of root servers. For political
f Bobs from down the street retired and built telephone
companies, now recognized as non-RBOC ILECs, to serve their small
towns 100+ years ago.
Newly coming Bobs can survive as regional fiber operators
only in regions not served by ILECs as PON providers.
Masataka Ohta
n IPv4, is, in a not so long run, a lot lot worse
than IPv4.
Masataka Ohta
are keep succeeding for 100+ years
not because they unreasonably cut maintenance cost but because
they have archived regional monopoly.
Masataka Ohta
which should now be PON operators still enjoying regional
monopoly.
So?
Masataka Ohta
access seemed promising
and some money was also invested on high speed inexpensive
satellite internet, even though satellite internet must
be low speed or expensive.
Masataka Ohta
Mike Hammett wrote:
Yet the independents are doing it anyway.
Petit bubble caused by quantitative easing, perhaps.
Masataka Ohta
-
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
that at that time.
Masataka Ohta
, is that there
are people who can't distinguish IP address changes by mobility
and by multihoming. Such people will keep reinventing MPTCP.
Masataka Ohta
col can't do anything
with that information regardless of whether you expand the API to
provide it.
Read my draft, which explains how TCP should be modified.
Masataka Ohta
supports
end to end multihoming at the application layer to try all
the addresses of name servers, on which other applications
can safely rely.
Masataka Ohta
may be supported at the application layer
by trying all the available addresses, which is what DNS and
SMTP are actually doing.
TCP modification is just an option useful for long lasting
TCP connections.
Masataka Ohta
sed by
the established (since early days with class C) practice.
That multihomed sites are relying on the entire Internet
for computation of the best ways to reach them is not
healthy way of multihoming.
Masataka Ohta
subdivide 256 /24 into /32)
should be possible.
But, there is no need for costly and power wasting TCAM.
So far, I ignore IPv6, of course.
Masataka Ohta
(DAILY), saravia(DAILY), sdinam(DAILY), secyt(DEMAND),
spok(DAILY), sykes(DAILY), tandil(DAILY), tsgfred(WEEKLY),
ulatar(EVENING), unisel(EVENING), uunet(DEMAND)
So, you now remember that UUCP links were scheduled.
Masataka Ohta
pathalias was able to
figure the best UUCP path from a given UUCP node.
Such initial attempts were not so elegant or scalable.
UUCP networks as DTN were brought to perfection through
integration with the Internet relying on DNS MX RRs.
Masataka Ohta
, in UUNET, availability of
phone links between computers was scheduled.
Masataka Ohta
bit metric of OSPF should be enough.
The most annoying part is to have multiple ground stations,
which, as usual, makes the MEO network DFZ with more than 1M
routing table entries.
Masataka Ohta
,
it is adoption. People will not move if it does not hurt enough. And
they can bear a lot.
But, for adoption, some formal document, not necessarily a (standard
track) rfc, is necessary.
Masataka Ohta
and support at the
6MAN on the draft above may help.
It may be more constructive to work for proxy ARP suitable
for Wifi, which may be enforced by Wifi alliance. An RFC
may be published if Wifi industry request IETF to do so.
Masataka Ohta
cast.
Masataka Ohta
of whether the
routers are SDN ones or not.
Masataka Ohta
armful than useful.
Masataka Ohta
on it along with
50 non default routes with plain IP routers.
Masataka Ohta
routing.
Anyway, prioritization needs more, not less,
routing table entries.
Masataka Ohta
requiring
dedicated routing table entry for each flow, which will not
shrink but bloat routing tables regardless of whether you
call it FIB or not.
Masataka Ohta
n the IPv4 "Time to Live" field was
renamed "Hop Limit" in IPv6. In practice, very few, if any, IPv4
implementations conform to the requirement that they limit packet
lifetime, so this is not a change in practice.
Masataka Ohta
.
Masataka Ohta
.
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sed.
Masataka Ohta
ki/Fair_queuing
"5 tuple FQ" is scaling today
Fair queuing does not scale w.r.t. the number of queues.
Masataka Ohta
amount of money?
Is it a reason why you use large buffer to eliminate possibilities
of packet dropping caused by buffer overflow but not by other
reasons?
Masataka Ohta
than elegant.
OK. But, you should be aware that, with bloated buffer, all
the customers sharing the buffer will suffer from delay.
Masataka Ohta
.
I understand that if customers follow the end to end principle,
revenue of "intelligent" ISPs will be reduced.
Masataka Ohta
Saku Ytti wrote:
If RTT is large, your 100G runs over several 100/400G
backbone links with many other traffic, which makes the
burst much slower than 10G.
In Ohtanet, I presume.
which is, unlike Yttinet, the reality.
Masataka Ohta
is not so large smaller than unbloated router buffer.
If RTT is large, your 100G runs over several 100/400G
backbone links with many other traffic, which makes the
burst much slower than 10G.
Masataka Ohta
at that
time and is not a meaningful measurement.
https://www.cs.wustl.edu/~jain/cse567-06/ftp/traffic_models2/#sec1.2
It merely states that some use non Poisson traffic models.
Masataka Ohta
d have been a valid argument 20 years ago.
Masataka Ohta
packet
> size? We can't empty the ingress buffers fast enough, do we have
> physical memory for each port, do we share, how do we share?
People who use irrationally small packets will suffer, which is
not a problem for the rest of us.
Masataka Ohta
in heavily
congested networks.
Masataka Ohta
90 and 16K will be the limitation factor
for PPS resulting in a lot less than maximum possible PPS.
Masataka Ohta
.
Masataka Ohta
lot, which
is favorable to telcos consisting ITU.
Masataka Ohta
That NZ has less population density than US means the last mile
problem is more severe in NZ than US, though actual severity
depends on detailed population distribution.
Masataka Ohta
eyes, which is fixed.
For TVs at homes, IMHO, baseband 2k should be enough, quality of
which may be better than highly compressed 4k.
Masataka Ohta
Livingood, Jason via NANOG wrote:
That shows up as increased user demand (usage), which means that the
CAGR will rise and get factored into future year projections.
You should recognize that Moore's law has ended.
Masataka Ohta
ause of natural regional monopoly.
Lobbyists lie? Say it isn’t so.
You seem somehow surprised by this.
No, not at all. So?
Masataka Ohta
stly.
Masataka Ohta
formation in advance, there shouldn't be any concern
: of privacy breach forbidden by local law of DE.
that is not a healthy movement.
Masataka Ohta
be a tool or a weapon, depending on how one uses it.
The wrench is whois.
However, something like trust banks may be able to hide
privacy of domain name owners if such entities can be regulated
properly for people who want some privacy.
Masataka Ohta
it.
The wrench is whois.
Masataka Ohta
of such
information in advance, there shouldn't be any concern
of privacy breach forbidden by local law of DE.
Masataka Ohta
?
Doing something authorized by law in a way specified by the
law can not be illegal. So?
Masataka Ohta
,
You totally miss the point of the order, though I wrote:
: As the order is to those "having actual knowledge of this Default
: Judgment and Permanent Injunction Order",
Masataka Ohta
enjoying a safe harbor of DMCA, yes, as I
already said so.
Masataka Ohta
nst innocent non-parties to the suit is a
> logical contradiction.
Wrong.
Those knowingly actively cooperating with the defendants are not
innocent at all though DMCA makes some passive cooperation
innocent.
Masataka Ohta
yright
infringements are not be protected by DMCA.
Masataka Ohta
.
Such interpretation of English Common law is against Zionism
promoted by British government and should be wrong.
Masataka Ohta
not useful. -- Jon Postel
And Steve Deering agreed with Jon saying "Exactly".
That's so funny because the statement was published in Oct. 1998
and the first rfc on IPv6 was published in Dec. 1995.
Masataka Ohta
against the CATENET model. Why, do you think,
NHRP was abandoned?
> we've never ran into an issue carrying
> thousands of IS-IS IPv4/IPv6 routes this way.
Thousands of? Today with so powerful CPUs, that is a small
network. So?
Masataka Ohta
means the source hosts have the current most routing table at
destinations, which requires flat routing without hierarchy or on
demand, that is, flow driven, look up of detailed routing tables
of destinations at a distance.
Masataka Ohta
ime, all the routers are ends to initiate
flooding of local LS, to receive flooded LS and to
compute the best route to destinations in a way
consistent with other routers because they share same
flooded LS except during short transition periods.
Masataka Ohta
, domains do not want to publish their policies
in full detail.
My question for this list is basically, has anyone noticed or fiddled
with babel?
No.
Masataka Ohta
ly we'd thought of putting a port number field
in the NS records in DNS back in 1983..."
And, MX.
As named has "-p" option, I think some people were already
aware of uselessness of the option in 1983. But, putting
a port number field at that time is overkill.
Masataka Ohta
address has a statically configured range of
public port numbers, it is extremely easy because no
logging is necessary for police grade audit trail
opacity.
Masataka Ohta
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