In this chapter, I showed you not only how to create a VLAN, but also how to name the VLAN and assign the VLAN to a port or range of ports. We also learned the importance of trunking a port, going between switches or from a switch to a router, so it can carry multiple VLANs across, using the 802.1q protocol, which is the one Cisco is now using. Then, we learned how to make separate VLANs talk to each other in two different ways: using a router and configuring subinterfaces, or using the Layer 3 switch and enabling routing on it.
If you remember anything from this chapter, let it be the importance of creating VLANs in your network. That way, your network can run more efficiently because you have reduced the amount of broadcast on your network.
Later in the book, we will continue talking about switching and we will learn other methods we can use to make layers more streamlined...