Each VLAN is its own broadcast domain. Individual VLAN connections can be configured by port, IP, or MAC address. VLANs can be configured to support individual groups, departments, or domains. VLANS breakdown the broadcast domains on a network. Each VLAN will have its own range of IP addresses so you can route between them. With VLANs in place you need fewer routers. The router can automatically route between sub interfaces without any additional configuration. Combined with 'trunking' this becomes even more powerful. If additional networked groups need to be added VLANing simplifies that task and reduces the total number of router ports needed.
Dig Deeper on Campus area network
Related Q&A from Michael Gregg
Enterprise security expert, Michael Gregg answers a question regarding port 3389 issues when a user tries to open port 3389 RDP on their router to ... Continue Reading
Security expert Michael Gregg discusses the disadvantages to a layered approach to enterprise security. Continue Reading
Learn how to change your security settings to allow ActiveX in Internet Explorer 6 or later, from our enterprise security expert Michael Gregg. Continue Reading