VLANs keep your network safe from untrustworthy devices, but the wrong setup can backfire ...

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. We have two switches and two VLANs. Actually, we have over a hundred switches and a dozen ...

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 ...

Virtual LANs (VLANs) allow the segmentation of a physical network into multiple logical networks. VLAN trunking is the process of transporting multiple VLANs over a single network link—typically ...

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 ...