As more people utilize a network to share large files, access file servers and connect to the Internet, network congestion occurs. To relieve network congestion, more bandwidth is needed or the available bandwidth must be used more efficiently
2. Why Segment LANs?
•By using segments in a network, less users & devices are sharing the same bandwidth when communicating within the segment.
3. Segmentation with LAN Switches
•A LAN that uses a switched Ethernet topology creates a network that behaves like it only has two nodes - the sending node and the receiving node. They share the 10Mbps bandwidth between them, which means that nearly all the bandwidth is available for the transmission of data.
•This process of creating smaller collision and broadcast domains is referred to as segmentation
4. LAN Switching Overview
•Switching increases the bandwidth available on a network by creating dedicated network segments and connecting those segments in a virtual network within the switch. This circuit exists only when two nodes need to communicate.
5. How a LAN Switch Learns Addresses
•Switches learn device addresses by:
·Reading the source address of each packet transmitted
·Noting the port where the frame was heard
6. Symmetric Switching
•A symmetric switch provides switched connections between ports with the same bandwidth, such as all 10 Mbps or all 100 Mbps ports.
7. Asymmetric Switching
•An asymmetric LAN switch provides switched connections between ports of unlike bandwidth, such as a combination of 10 Mbps and 100 Mbps ports.
