Understanding Virtual LANs
This lesson covers virtual LANs or VLANs. We’ll start by defining what a VLAN is and then explaining how it works. We’ll conclude the lesson by talking about some key VLAN technologies such as ISL and VTP.
In addition to the ISL packet tagging method, Cisco also created the Virtual Trunking Protocol, or VTP, for dynamically configuring VLAN information across the network regardless of media
Another key component of VLANs is the router. Routers provide inter-VLAN communications and are essential for sharing VLAN information in large environments. The Layer 3 routing capabilities provide
Let’s take a look at some technologies that are essential for VLAN implementations. Inter-Switch Link Cisco developed the Inter-Switch Link, or ISL, mechanism to support high-speed trunking between
Membership by Port Let’s look at the first method for determining or assigning VLAN membership: Port-based — In this case, the port is assigned to a specific VLAN
VLANs provide many internetworking benefits that are compelling. Reduced administrative costs—Members of a VLAN group can be geographically dispersed. Members might be related because of their job functions
Well, the reality of the work environment today is that personnel is always changing. Employees move departments; they switch projects. Keeping up with these changes can consume significant