CCNA 3 v3.0 Module 5 Switches. Objectives. LAN design LAN switches. LAN Design Goals. Functionality Scalability Adaptability Manageability. LAN Design Considerations. To maximize available LAN bandwidth and performance, the design considerations are:
To maximize available LAN bandwidth and performance, the design considerations are:
Microsegmentation of the network reduces the size of collision domains and reduces collisions.
Asymmetric switching provides switched connections between ports of unlike bandwidth, such as a combination of 10-Mbps and 100-Mbps ports
Routers provide scalability because they serve as firewalls for broadcasts. They can also provide scalability by dividing networks into subnetworks, or subnets, based on Layer 3 addresses.
The access layer provides users in workgroups access to the network. It is the entry point for user workstations and servers to the network.
Functions of the Access Layer:
The distribution layer of the network is between the access and core layers. It helps to define and separate the core. The purpose of this layer is to provide a boundary definition in which packet manipulation can take place.
The core layer is a high-speed switching backbone. The core layer should be designed to switch packets as fast as possible.