Autonomous System(AS)...

• Identified by ‘AS number’

  • example: AS16907 (ISPKenya)

• Public & Private AS numbers

  • Public (assigned by registries): 1-26623
  • Private: 64512 – 65534
  • AS 0 and 65535 are reserved

• Typical applications:

  • Service provider
  • Multi-homed customers
  • Anyone needing policy discrimination

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