Posted in Cloud, history, Internet, Networks

The Expenditure of TCPv4

While working on an TCP/IP problem today, I was finally struck by the fact that we have for all intents and purposes expended the entire TCPv4 addressing space. I knew it was coming, years ago, but now while testing IP addresses, it dawned on me.

You can now pick any arbitrary set of numbers nnn.nnn.nnn.nnn and expect a response. Ping them, probe them, something will be there, or it’s being held. All gone, this is the equivalent of spitting in the middle of an ocean while swimming,  you are going to hit ocean.

4,294,967,296 (232) addresses gone, 4 Billion addresses in use…..

Author:

With 40 years experience in software development, systems design and engineering and IT operations, and Infrastructure Architecture issues. I am versed in multiple programming languages, Operating Systems and RDBMS, I have work experience ranging from microcomputers and PC’s to multiprocessor mid range Unix systems and clusters. I have experience with both wireless and wired network protocols and mediums. And I've help migrate systems into the Amazon EC2 Cloud from self hosted configurations. I collect old working computers, I'm a published Astro-photographer, I tutor, and teach almost every subject I am knowledgeable in. I have had one internet email or another since 1991. I developed Gopher sites prior to the formation of HTTP/HTML and a few websites since then. I wrote my first 'database' on a DEC PDP-11 for the DECUS Library in 1984. Specialties I specialize in Database systems, and am familiar with almost all types of RDBMS and ISAM systems short of Mainframes. I habitually reverse engineer and document everything I touch.

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