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Vint Cerf's Disruption-Tolerant Networking
An anonymous reader writes "Net pioneer, Vint Cerf, talked this week about the space internet (the Interplanetary
Internet), and an interesting 1994 April Fool's email he
penned as a Request for Comment [1607]. The thread involves a reverse time
capsule from the year 2023, but covers Cerf's side interests in Shakespeare.
Since 2004 marks the 30th anniversary of publication of the first paper
on the Internet, his views on the future
of the net and Interplanetary
Internet seem to have morphed somewhat into delay and disruption tolerant
networking because of high demand for videoconferencing, Voice-Over IP, and multimedia."
Um...The site says Delay, not Disruption....wtf?
Bored? Why not join a decent mess
Now if only someone can find a way to keep the internet from disrupting my productivity at work...
This brings up an interesting step in the path towards trying to settle Mars... would it be a smart idea to have communciations satellites orbiting Mars before we send the first humans?
Having the already-in-space assets so that reliable Earth-to-Mars links can be established could be very useful to the first manned missions, especially so we could avoid losing contact in the situations where they'd otherwise have to transmit through the planet to get back to earth.
Imagine having all of Mars already be a wireless Internet hotspot before we get there...
...is all nice and fine, but disruption/delay tolerant people, those are a rarity.
EVERYDAY IS CATURDAY
Who is Half Handsome?
actually more like 6 years ago!
a completely fault-tolerant, disruption proof, delay proof networking communications protocol.
its done. its been sitting on my desk for years, collecting dust. Its been done so much, evolutionary improvements to steps beyond are already done.
no one cares. no one wants it. even for free, even as OSS... oh well...
ps its called "L2R"... just a hint...
I'd take that "measly" 50 PFLOP system anyday! (insert Beowulf Cluster joke here)
Did anyone else read that as "Vint Cerf's Disrupt Torrent Networking"? Damn, I must be really paranoid about the distruction of P2P file sharing.
Life is not for the lazy.
ya' know, this future email got me thinking. Is there a way to carbon date something that has existed yet?
I think we should send up robots that can create really "cheap" (as in not fancy, low quality) solar cells out of the materials already available on Mars.
This brings up an interesting step in the path towards trying to settle Mars... would it be a smart idea to have communciations satellites orbiting Mars before we send the first humans?
The current set of satellites provide communication links between the landers and Earth.
Nah, ya just kick a comms satellite out the door as your landing vehicle goes past aerosynchronous orbit.
You are in a twisty maze of processor lines, all alike.
There is a lot of hype here.
January, 14, 2024:
linux 15.28
subroot@uberbox.com# ping -f www.mars.mr
http://www.slashdot.org:
January, 17, 2004 18:06 GMT
Mars Gets first DDOS
An anonymous reader writes, "It appears a group of hackers have successfully performed the first denial of service attack against Mars, taking the interplanetary internet down for several hours today. The hackers managed to mask their IPv8 addresses by rerouting through several interplanetary sublinks that initially showed them originating approxmatley 600,000 miles away from earth in the middle of space." Update 20:24GMT Yeah its a dupe again! We ran a story on this for three days in a row. It was originally posted here, here and here.
I guess IPv8 links are too advanced to render in my browser.
they were really worried too
MoFscker
Some interesting articles about DTN that were made available on the IPNSIG (Interplanetary Network Special Interest Group) site:
DTN Tutorial (PDF)
DTN Architecture: The Evolving Interplantary Internet (TXT)
DTN for Extreme Environments (PDF)
-----
Great idea! Unfortunately, such robots don't exist.
Perhaps instead we should use a time machine to travel back in time and start our attempt to inhabit mars back then so that now in the present we will already have people on mars!
Great idea! Unfortunately, such robots don't exist.
Just as human carrying Mars landers don't yet exist. I believe the idea is to think up things that don't exist yet, and then build them.
I think Mr. Cerf himself has some experience with that particular protocol.
KFG
This brings up an interesting step in the path towards trying to settle Mars... would it be a smart idea to have communciations satellites orbiting Mars before we send the first humans?
The current set of satellites provide communication links between the landers and Earth.
Yes, however it's clear that the limited bandwidth provided by those satalites is not nearly as much as one would wish for an entire human settlement to have to share.
Also it would be smart to have 100% dedicated communications satallites so that there would be less chance of something unrelated to communications causing a problem on the satallite.
Don't get me wrong, the satallites have been great (I work on MER) however we still have to throw away observations due to bandwidth constraint, and we have to wait quite a bit to get data back, on the order of several hours... not an ideal situation!
Maybe a few optical links with a radio backup would do the trick.
Cheers,
Justin
Please mod parent up: +5, Funny!
This is an excellent user land TCP application that automatically re-connects to dropped TCP connections, even if the IP addresses change.
http://www.cs.wisc.edu/~zandy/rocks
There is also an in-depth paper by the authors.
Rocks protect sockets-based applications from network failures, particularly failures common to mobile computing, including:
* Link failures (e.g., unexpected modem disconnection);
* IP address changes (e.g., laptop movement, DHCP lease expiry);
* Extended periods of disconnection (e.g., laptop suspension).
Rock-enabled programs continue to run after any of these events; their broken connections recover automatically, without loss of in-flight data, when connectivity returns. Rocks work transparently with most applications, including SSH clients, X-windows applications, and network service daemons.
bah, slashcode breaks the title attribute in hrefs and co-opts it for it's own use, bad programming.
It is helpful to blind readers and page indexers esp. if the label text is something like 'click here' to provide some information on the content of the link. grr sometimes I gets so mads
There are places where the networks are not touching,and there are places where they are-Boeing's Lori Gunter
That's probably why NASA already have the Mars Telecommunications Orbiter scheduled for launch in 2009. This is still being spec'ed out but optical links, which are currently described as testing\Proof of concept and primary Ka-Band capabilities (once proven in MRO below) are both in plan right now.
Next year's Mars Reconnaissance Orbiter has significantly better telecoms relaying capability than the existing Odyssey\MGS orbiters - 6Mbits/sec using Ka-band. This goes with some major upgrades to the DSN as this currently has 10Mbit/sec limitations for telecoms at Mars distances AFAIK. This JPL presentation has lots of detail on the near term\medium term plans and proposals and where the IPN fits in. This indicates that the bandwidth of optical links to mars would be in the 30-300Mbps range.
We have an Internet-content delivery system that works in a high-latency environment, to deliver mail and web content to South African schools.
http://wizzy.org.za/
The problem it is designed to overcome is the high cost of local telephone calls in a monopoly wireline provider regulatory environment.
We use cheap-rate overnight phone calls and a UUCP delivery system in conjunction with a local mailserver and wwwoffle web cache.
UUCP can also be used via a USB memory stick, similar to the DataMule (pdf) paper referenced on the website. Carrying the memory stick (the Courier) is identical to one UUCP hop.
The website gives more information.
Cheers, Andy!
Andy Rabagliati
Imagine having all of Mars already be a wireless Internet hotspot before we get there...
and a Starbucks in every crater.
the whole point, dullard, is that one uses the title information to elucidate what the 'click here' is.
i.e. for more information <a href="info.html" title="information on dullards">click here</a>
Though I wa sonly using that as an example. One should phrase one's content to suit the hypertext model.
We have plenty of <a href="info.html" title="dullard information">information on dullards</a>.
It is also useful where one uses an image
<a href="info.html" title="dullard information"><img src="dullard.gif" alt="a smiling dullard"></a>
in this way, one can combine a bit of eye candy while providing the required information should images be unavailable
There are places where the networks are not touching,and there are places where they are-Boeing's Lori Gunter
Ummm, set up the whole infrastructure required for human existence before you send humans? When when they get there they could have a place to stay, ready for occupancy, just like a HoJo. Maybe set up more than one? Pick a place with a nice view.
Well, Protocol Seven did do away with the need to actually have a computer to connect to The Wired, so I suspect IP v.8 would be entirely unnecessary.
Knowledge is power. Knowledge shared is power multiplied.