Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Geo location to IP mapping

  • From: Charles Cala
  • Date: Tue May 16 14:00:46 2006
  • Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=CVitJ6ZvJtyQDUpeUw7I4RgHmbSKHy6aCimtKbB2YwRD0O1h0oYOrOZYNoLyPXqoqUqT0a3pYetRMGh4OqEguBXipJapvXzsUOMH8TlJmu6tlUfDfGRxdLKcjVL+sv/03+Qo7t6FbA8+KvIyHSPsy5bKIy1TVc21fvU8wE2KJpg= ;



--- Marshall Eubanks <tme@multicasttech.com> wrote:

> 
> I seriously doubt this would work to better than the regional area.
> 
> My zip code (20124) region is about 5 km across, which would be 15  
> microseconds in vacuum, and
> maybe at most 50 micro seconds in glass. So, you would need  
> accuracies at the 10's of microsecond level to specify zip codes.

don't forget, cable paths are not direct, and each bend in 
the cable increases the distance that the light must 
travel within the fiber. optical repeaters, optical 
switches and other equipment can add distance, 
(thus time) to the signal.

Please see 
http://www.fiber-optics.info/fiber-history.htm





Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.