Encyclopedia > Autonomous system

  Article Content

Autonomous system

In differential equations, an autonomous system is an equation of the form
<math>\frac{d}{dt}x(t)=f(x(t))</math>
where x takes values in n-dimensional Euclidean space and t is usually time. It is distinguished from systems of differential equations of the form
<math>\frac{d}{dt}x(t)=g(x(t),t)</math>
in which the law governing the rate of motion of a particle depends not only on the particle's location, but also on time; such systems are not autonomous.


In the Internet, an autonomous system (AS for short) is a collection of IP networks under control of a single entity, typically an internet provider with redundant networking connections.

Unique AS numbers are allocated to each AS for use in BGP routing. The numbers are assigned by the same authorities that allocate IP addresses. AS numbers are currently 16-bit integers. There are public numbers which may be used on the Internet and range from 1 to 64511 and private numbers from 64512 to 65535 which can be used within an organisation.

Types of AS:

  • Multihomed AS
  • Stub AS
  • Transit AS



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Flapper

... flappers were known for their style, which largely emerged as a result of the musical style of jazz and the popularization of dancing that accompanied it. Called garconne ...

 
 
 
This page was created in 36.8 ms