170.170.10.1

170.170.11.1

While IGP's work to Route packets inside an Autonomous System EGP's (Exterior Gateway Protocols) do the routing Outside the Autonomous Systems

The Autonomous System

Layer 3

170.170.12.1

170.170.13.1

170.170.0.0

170.170.0.4

170.180.0.0

170.180.0.4

170.180.10.1

170.180.11.1

170.180.13.1

170.180.12.1

11.24.0.4

14.24.0.4

Autonomous System

Autonomous System

IGP

IGP

EGP

The Main EGP Protocol is BGP – (Border Gateway Protocol)