LAN Security

One of the main information that network administrator should have is how to secure his network, so this lesson will give a basic information about the LAN network security.

Multiswitching

In multiswitching will understand the using of this kind of switch in a backbone of the networks.

The hierarchical network design

This lesson will make you understand how does the LAN network design and as a network administrator you should have a knowledge about the hierarchical network design.

When building a LAN that satisfies the needs of a small-

sized or medium-sized business, your plan is more likely to 

be successful if a hierarchical design model is used. Compared to other network designs, a hierarchical network is easier to manage and expand, and problems are 

solved more quickly.

VTP commands

Knowing the VTP commands able you to manage the VLANs very well. also, it is one of a basic knowledge that should a network administrator have.

When a switch is in VTP server mode, you can change the VLAN configuration and have it propagated throughout the network.

Beginning in privileged EXEC mode, follow these steps to configure the switch as a VTP server:

Introduction to VTP

In introduction to VTP you should know the basics of VTP and what is the purpose and benefit of VTP. The following information will help to understand the next lesson which is "VTP commands".

VTP is very important protocol for a network manager for several reasons. Imagine that network manager had to separate one LAN into two different LAN, so he must create two VLAN into the network switches. Then he should access to every switch to configure the VLAN database.

VLAN

This lesson will allow you to understand what is VLAN and what is the purpose of using it in a network. as a network administrator you should have a rich information about VLAN because you will use it in you network.

Addressing

In network addressing you should know which kind of network addresses do you have and how can use an address in your network and how to sub-netting the address.

A network address is simply a code used by computers as a means of identification. Just like getting information to and from your home requires the postal service to know the house number and street name, a network address accomplishes the same thing for a computer network. Without some way of passing along this information, the idea of the Internet would be almost useless.