O'Reilly logo

Cisco® Field Manual: Catalyst® Switch Configuration by Steve McQuerry, Dave Hucaby

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

6-1. VLAN Configuration

  • VLANs are broadcast domains defined within switches to allow control of broadcast, multicast, unicast, and unknown unicast within a Layer 2 device.

  • VLANs are defined on a switch in an internal database known as the VLAN Trunking Protocol (VTP) database. After a VLAN has been created, ports are assigned to the VLAN.

  • VLANs are assigned numbers for identification within and between switches. Cisco switches have two ranges of VLANs, the normal range and extended range.

  • VLANs have a variety of configurable parameters, including name, type, and state.

  • Several VLANs are reserved, and some can be used for internal purposes within the switch.

Creation of an Ethernet VLAN

VLANs are created on Layer 2 switches to control broadcasts and ...

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