Content

| Summary

Upon completion of this module, the student should understand:

- Broadcasts are useful and necessary traffic. However, too much broadcast traffic can cause network performance problems. Managing broadcast traffic is a critical aspect of campus LAN design.
- The location of common workgroups and servers can have a significant impact on traffic patterns.
- Adding additional bandwidth is not the long-term solution to meeting the needs of high-priority traffic.
- Multilayer switching combines Layer 2 switching and Layer 3 routing functionality.
- The multilayer design model is inherently scalable. Layer 3 switching performance scales because it is distributed. Backbone performance scales as you add more links or more switches.
- A switch block is the unit that contains distributed network services and network intelligence. A switch block consists of Layer 2 switches, Layer 3 routers, and, sometimes, distributed servers.
- A core block is the unit that transfers cross-campus traffic. It can consist of Layer 2 or Layer 3 devices.
- The purpose of network link redundancy is to provide alternate physical pathways through the network in case one pathway fails.
- How to make initial connections to the switch, connecting to the console port and connecting an Ethernet port
- Basic configuration of the switch includes:

> - Clearing a configuration
> - Setting a password
> - Naming the switch
> - Configuring the switch for remote access
> - Identifying individual ports
> - Defining link speed and line mode on a switch

- Important IOS features include:

> - Command-line recall
> - Using the help feature
> - Password recovery
> - Verifying connectivity
> - Saving the configuration
> - Backup and restoration of a configuration using a TFTP server