Spread Spectrum IP Addressing - SOURCE Address Field ROTATED|shifted? Left 2 Bits
Common Misconception With Spread Spectrum IP Addressing the 32-bit Source Address Field is Shifted LEFT 2-bits by the originator of the packet. That Folds the IPv4 Legacy Address Space into 1/4th tsize table The lost 2-bits are stored in the Right-Most 2 bits of the 32-bit field and in other places in the IPv4 Header The Destination can easily recover the Source Address - if the proper algorithms are in use Responses blindly sent back to the shifted Source Address may fall into agile hands or not With the advanced Spread-Spectrum techniques, additional addressing bits are created from the noise intentionally stored in the Right-Most 2 bits NANOG Operators buying /8s or /6s may want to look at the Spread-Spectrum CODE in the Linux-based CPE Routers The following table is deprecated and 1/4th the size: http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt With Spread-Spectrum collisions and mis-directions are OK and expected but other techniques ensure the packets get to the right place. http://NANOG.GURU
Is it April already? I though April Fools Day wasn't until next month. I did, I did. I did see a snake-oil salesman! --- () ascii ribbon campaign against html e-mail /\ www.asciiribbon.org
-----Original Message----- From: Guru NANOG [mailto:nanog.guru@gmail.com] Sent: Saturday, 03 March, 2012 12:34 To: nanog@nanog.org Subject: Spread Spectrum IP Addressing - SOURCE Address Field ROTATED|shifted? Left 2 Bits
Common Misconception
With Spread Spectrum IP Addressing the 32-bit Source Address Field is Shifted LEFT 2-bits by the originator of the packet.
That Folds the IPv4 Legacy Address Space into 1/4th tsize table
The lost 2-bits are stored in the Right-Most 2 bits of the 32-bit field and in other places in the IPv4 Header
The Destination can easily recover the Source Address - if the proper algorithms are in use
Responses blindly sent back to the shifted Source Address may fall into agile hands or not
With the advanced Spread-Spectrum techniques, additional addressing bits are created from the noise intentionally stored in the Right-Most 2 bits
NANOG Operators buying /8s or /6s may want to look at the Spread-Spectrum CODE in the Linux-based CPE Routers
The following table is deprecated and 1/4th the size: http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt
With Spread-Spectrum collisions and mis-directions are OK and expected but other techniques ensure the packets get to the right place.
On Sat, Mar 3, 2012 at 3:13 PM, Keith Medcalf <kmedcalf@dessus.com> wrote:
Is it April already? I though April Fools Day wasn't until next month. I did, I did. I did see a snake-oil salesman!
It sounds like the "IPv3" / "IPv8" guy crawled back out of the woodwork. Yeah, April fools is next month, but that's for actual pranks/jokes; I suspect the poster is actually serious, however misguided; April fools is just one day -- misguided folks make nonsensical suggestions ~365.24219 days a year (on average). -- -JH
--- On Sat, 3/3/12, Jimmy Hess <mysidia@gmail.com> wrote:
From: Jimmy Hess <mysidia@gmail.com> Subject: Re: Spread Spectrum IP Addressing - SOURCE Address Field ROTATED|shifted? Left 2 Bits To: "Keith Medcalf" <kmedcalf@dessus.com> Cc: "nanog@nanog.org" <nanog@nanog.org> Date: Saturday, March 3, 2012, 2:39 PM On Sat, Mar 3, 2012 at 3:13 PM, Keith Medcalf <kmedcalf@dessus.com> wrote:
Is it April already? I though April Fools Day wasn't until next month. I did, I did. I did see a snake-oil salesman!
It sounds like the "IPv3" / "IPv8" guy crawled back out of the woodwork.
Yeah, April fools is next month, but that's for actual pranks/jokes; I suspect the poster is actually serious, however misguided; April fools is just one day -- misguided folks make nonsensical suggestions ~365.24219 days a year (on average).
-- -JH
I am reminded of: "The mathematical reality of IPv4". At least that made for interesting bed time reading... disposition: removed. ./Randy
http:// <http://www.timecube.com/>www.timecube.com/<http://www.timecube.com/> Goes together well.. On Mar 3, 2012 1:34 PM, "Guru NANOG" <nanog.guru@gmail.com> wrote:
Common Misconception
With Spread Spectrum IP Addressing the 32-bit Source Address Field is Shifted LEFT 2-bits by the originator of the packet.
That Folds the IPv4 Legacy Address Space into 1/4th tsize table
The lost 2-bits are stored in the Right-Most 2 bits of the 32-bit field and in other places in the IPv4 Header
The Destination can easily recover the Source Address - if the proper algorithms are in use
Responses blindly sent back to the shifted Source Address may fall into agile hands or not
With the advanced Spread-Spectrum techniques, additional addressing bits are created from the noise intentionally stored in the Right-Most 2 bits
NANOG Operators buying /8s or /6s may want to look at the Spread-Spectrum CODE in the Linux-based CPE Routers
The following table is deprecated and 1/4th the size: http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt
With Spread-Spectrum collisions and mis-directions are OK and expected but other techniques ensure the packets get to the right place.
On Mar 3, 2012 1:34 PM, "Guru NANOG" <nanog.guru@gmail.com> wrote:
Common Misconception
With Spread Spectrum IP Addressing the 32-bit Source Address Field is Shifted LEFT 2-bits by the originator of the packet.
[ [sneck ]] A unique way to get his two bits in. I trust he remembers to set the evil bit -- for mandatory RFC 3514 compliance.
On Sat, 03 Mar 2012 13:34:20 CST, Guru NANOG said:
I knew the ICANN expansion of TLDs would lead to no good...
show some sympathy or hit delete. this is likely a very sad person who needs professional, and i do not mean net geek, help. randy
On 3/3/12 12:34 PM, Guru NANOG wrote:
Common Misconception
With Spread Spectrum IP Addressing the 32-bit Source Address Field is Shifted LEFT 2-bits by the originator of the packet.
<snip crap>
Guillaume Fontaine, is that you? -- Brielle Bruns The Summit Open Source Development Group http://www.sosdg.org / http://www.ahbl.org
participants (9)
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Brielle Bruns -
Guru NANOG -
Jimmy Hess -
Keith Medcalf -
Randy -
Randy Bush -
Robert Bonomi -
Tim Jackson -
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