Article:		Connecting to the IPv6 Internet
Subject:		a small typo (but a giant leap for mankind)
Date:		2004-01-29 00:05:07
From:		joostd
Just for clarity: A /48 IPv6 network prefix leaves you with 2^16 subnets, each of which may have up to 2^64 nodes. A small typo, but the caret symbol (^) makes quite a big difference here... Great article BTW.

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• a small typo (but a giant leap for mankind)
  2004-01-29 04:26:48  haddad_i [View]
  
  
  Sorry for the typo and thanks for the correction.
  
  here's some info on how it is broken down:
  
  Each /48 IPv6 prefix allows a site (a university, an organization, a company, ...)
  to have up to 2^16 subnets (2^16= 65.535 subnets).
  
  Each subnet could handle 2^64 nodes ( 2^64 = 18.446.744.073.709.551.616 nodes -
  each with distinct IPv6 address).
  
  Therefore, if you calculate the total number of unicast IPv6 addresses you get
  with a single /48 prefix, you get:
  
  2^16 subnets x 2^64 nodes = 1.208.925.819.614.629.174.706.176 IPv6 addresses.