


We will learn how it works, consider the various methods that can be used to implement it, configure inter-VLAN routing using router-on-a-stick and traditional inter-VLAN routing, compare the two styles of implementation and finally verify and troubleshoot inter-VLAN routing. In this chapter, we will discuss the role played by inter-VLAN routing in communication between different VLANs. In many enterprises, you will find that information sharing across departments is a requirement, therefore, the question begs, how do you make users in the SALES and FINANCE department communicate, yet they are on different VLANS? a user in FINANCE, would not be able to send a message to a user in SALES since they are on different broadcast domains. The use of VLANs means that users would not be able to communicate across departments, i.e.

In previous chapters, we learnt how VLANs segment broadcast traffic on a switch and segment a switched network into different LANs, we also learnt how VLAN information can be transmitted to other switches in the network using VTP and how we can avoid layer two loops using STP.Ĭonsider, this, as the network administrator, one of your tasks is to create and assign different users to VLANs in your network, you have three main departments which should be logically segmented using VLANs, VLAN 10 – FINANCE, VLAN 20 – SALES and VLAN 30 – HR.
