1.2 Hierarchical Network Design Flashcards
MAC address
It is physically assigned to the host NIC and is known as the physical address.
The physical address remains the same regardless of where the host is placed on the network.
A MAC address indicates the individual identity of a specific host, but it does not indicate where on the network the host is located.
IP address
It is known as a logical address because it is assigned logically based on where the host is located.
The IP address, or network address, is assigned to each host by a network administrator based on the local network.
IP addresses contain two parts.
One part identifies the network portion.
The network portion of the IP address will be the same for all hosts connected to the same local network.
The second part of the IP address identifies the individual host on that network.
Within the same local network, the host portion of the IP address is unique to each host
HIERARCHICAL DESIGN MODEL
Is one way to divide larger networks.
In a hierarchical network design, we think about how are we going to organize out network.
Hierarchical networks are able to scale because they are logically designed in a manner such that traffic doesn’t need to travel over to the areas of the network where it is not necessary.
ACCESS LAYER
The access layer provides connectivity to devices on an Ethernet LAN.
Devices that actually connect users and other end users devices, reside at the access layer.
The primary function of the access layer is to provide an entrance point for the devices to get on the network.
DISTRIBUTION LAYER
The distribution layer main function is to interconnect the access layer networks and to direct traffic.
CORE LAYER
The core layer is responsible for the high speed processing.
BROADCASTING
Broadcast packets go to everyone that is in the same local network.
LOCAL NETWORK
The same area of the network that is only connected by a switch.
