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Internet Routing How It Works

Internet Routing How It Works. Prepared and Presented by the NRO On Behalf of the RIRs AfriNIC, APNIC, ARIN, LACNIC, RIPE NCC. Definitions. Routing The act of moving information across an internetwork from a source to a destination. Domain Name System [DNS]

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Internet Routing How It Works

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  1. Internet RoutingHow It Works Prepared and Presented by the NRO On Behalf of the RIRs AfriNIC, APNIC, ARIN, LACNIC, RIPE NCC

  2. Definitions • Routing The act of moving information across an internetwork from a source to a destination. • Domain Name System [DNS] A means of storing and retrieving information about hostnames and IP addresses in a distributed data base.

  3. n! / p! * ((n – p)!) = c 6 ! / 2! * ((6 – 2)!) = 15 60 ! / 2! * ((60 – 2)!) = 1,770 600 ! / 2! * ((600 – 2)!) = 179,700

  4. Network

  5. Inter Connected Networks

  6. Routed Internetwork 172.25.1.4 192.23.9.6 201.32.16.10 163.37.56.21

  7. Using DNS 172.25.1.4 192.23.9.6 163.37.56.21 201.32.16.10

  8. Administrative Grouping 172.25.1.4 192.23.9.6 201.32.16.10 163.37.56.21

  9. Autonomous Systems AS 2345 172.25.1.4 192.23.9.6 AS 1234 AS 3456 201.32.16.10 163.37.56.21

  10. Routing Announcement AS 2345 I speak for 172.25.1.0 and 201.32.16.0 172.25.1.4 192.23.9.6 AS 1234 AS 3456 201.32.16.10 163.37.56.21

  11. Policy Announcement AS 2345 I prefer AS2345 but not AS3456 172.25.1.4 192.23.9.6 AS 1234 AS 3456 201.32.16.10 163.37.56.21

  12. Policy Announcement AS 2345 I refuse AS3456 172.25.1.4 192.23.9.6 AS 1234 AS 3456 201.32.16.10 163.37.56.21

  13. Thank You

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