Ethernet Video Series
Episode 07, Segment 09 of 10
Ethernet Delivers the Internet (continued)
This notion of encapsulation is important to those of us with small networks, because when we connect our small networks to the Internet, we're actually merging two networks together.
(Click small image above to view larger version)
One Ethernet segment is actually owned and
managed by our Internet service provider, and our own Ethernet is managed
independently by our own policies and equipment.
And when an IP packet arrives from the Internet, we must remove it from the Ethernet frame managed by our ISP network, and repackage it inside a new Ethernet frame thatís understood by our local networking equipment for delivery to a computer inside our home or small business.
On the other hand, when we want to send a message out to someone on the world-wide Internet, our computers create an IP packet, which must be wrapped in an Ethernet frame for delivery to the Internet.
Episode 07, Segment 10 of 10