Tag Archives: IOS

NAT (Network Address Translation)

Overview In the previous chapter, we saw how DHCP is useful in assigning ip addresses to hosts in a network. In this chapter, we will look at another important ip service that helps hosts access the internet. We will learn about, NAT operation and IPv4, and configure and troubleshoot NAT. NAT in today’s networks In […]


Overview In part one of this chapter, we learnt how to configure VLANs on a switch. In this section, we will focus on deleting of VLANs on a switch, verification of configured VLANs as well as troubleshooting of some common VLAN problems. Deleting VLANs In other chapters, we have seen that using “no” at the […]

Switch Concepts and Configuration Part I

Overview In this chapter, we will explore switching concepts and the basic configuration of a switch. We will discuss the switch’s operation, layer 2 and layer 3 switching as well as other concepts. We will conclude with the basic configuration of a switch and this will lead us into the discussion on VLANs. CSMA/CD We […]