Summary
This chapter introduced you to the world of virtual LANs and described how Cisco switches can use them. We talked about how VLANs break up broadcast domains in a switched internetwork—a very important, necessary thing because layer 2 switches only break up collision domains and, by default, all switches make up one large broadcast domain. I also described access links to you, and we went over how trunked VLANs work across a FastEthernet or faster link.
Trunking is a crucial technology to understand well when you’re dealing with a network populated by multiple switches that are running several VLANs. I also talked at length about VLAN Trunk Protocol (VTP), which, in reality, has nothing to do with trunking. You learned that it does send ...
Get CCNA® Cisco Certified Network Associate: Study Guide, Seventh Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
