IP Routing Protocols

AS 100

RIP

OSPF

AS 100

ISIS

AS 400

AS 300

AS 200

BGP-4

BGP-4

BGP-4

BGP-4

Protocols inside the AS:

• OSPF

• IS-IS

• RIP

• I-BGP4

Protocols between ASs:

• E-BGP4

The Internet is divided into Autonomous Systems (ASs)

OSPF

OSPF

Q

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