Knowledgebase: GTD
How does GTD service work?
Posted by on 07 February 2013 07:57 PM

The Global Traffic Director gives clients the ability to geographically respond to queries differently based on region. It is useful is you have multiple different servers located around the world and you want to direct your traffic to the closest server. For example, you can have your 'www' record for your domain point to a web server at 10.10.10.1 in Europe and a different web server at 10.10.20.2 in the United States. European querying clients are sent to 10.10.10.1 while US querying clients are sent to 10.10.20.2.

You can read more about GTD service on our website.

We offer geo-based DNS routing based on the following regions:

  • US-East
  • US-West
  • Europe
  • Asia
  • Oceania

Each GTD region does not correlate directly with a set of countries because GTD is not based on specific locations. GTD works by serving a custom zone out of each region (defined by DNS Made Easy). Each region consists of many PoPs and our regions have been deliberately broadly defined. We have engineered our Anycast PoPs to attract traffic specific to a given location baesd on the location of the querying client resolving name server and this allows us to provide a geographically aware DNS service that does not utilize database lookups. We have found this method of implementation for geo-based DNS service is very accurate, often more so than database driven approaches, as there is no need to worry about erroneous or outdated geoip data or users that are utilizing Anycast resolving name server services. This breaks most geo-dns solutions because of the Anycast implementation and the IP of the resolving name server(s) are then registered to a single location. 

That being said, for our regions we have defined the following PoPs and this will hopefully provide you some clarification on how the service resolves:

  • EUROPE - Frankfurt, DE and London, UK
  • US-EAST - New York, Ashburn, Miami, Chicago
  • US-WEST - Seattle, San Jose, Los Angeles, Dallas
  • ASIA-PAC - Tokyo, JP and Hong Kong, HK
  • OCEANIA - Sydney

 

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