Can anybody give me a step by step guide for setting up multiple VLANs on a Cisco 1841 modular router? I can't find anything to help me through my problem, which, incidentally, is that I can create ...

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 ...

Using a VLAN -- or Virtual Local Area Network -- to segregate the traffic on your router provides added security and performance for devices connected to your LAN. While a LAN is determined by the ...

The VXLAN technology introduced by Cisco and VMware this week is intended to scale VLANs to accommodate the exploding number of virtual machines in the virtualized data center. In addition to Cisco ...

To begin, we must have a more formal definition of what a LAN is. LAN stands for local area network. Hubs and switches usually are thought of as participating in a single LAN. Normally, if you connect ...

I've got a problem, I've been trying to implement some layer2 security on our switches with Port-Security, only allowing 2 MAC addresses on any 1 switchport. I've been looking at some of our switches ...

You may or may not have heard of VLAN (Virtual Local Area Network). It is something that is primarily used in large businesses around the world. If you are interested in opening a business that ...