I set a port on a switch to trunking, but it won't pass data. Here's the scenario. See if you can help me out.<BR><BR>We have two switches and two VLANs. Actually, we have over a hundred switches and ...

I'm looking for some guidance on a design for OSPF in an environment that needs layer two trunks between the routers. Consider the below topology: Layer 3 switches A, B and C are connected with trunks ...

In Cisco LAN switch environments, the native VLAN is typically untagged on 802.1Q trunk ports. This can lead to a security vulnerability in your network environment. It is a best practice to ...

What they do, why they're useful, and how to get started A virtual local area network is a logical subnetwork that groups a collection of devices from different physical LANs. Large business computer ...

Have you been told that VLANs are the ultimate solution to your network woes? That they’ll magically secure your infrastructure, eliminate complexity, and solve all your traffic management headaches?