O'Reilly logo

CCNA® Cisco Certified Network Associate: Study Guide, Seventh Edition by Todd Lammle

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

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 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required