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 ...

There are thousands of commands and subcommands available to configure a Cisco Adaptive Security Appliance, and as you gain knowledge of the appliance, you will find yourself using more and more of ...

Do you like puzzles? Are you working towards CCNA, or the CCNP Switch exam? If so, today’s post can be an interesting challenge to help you review switch VLAN configuration, with a short lab exercise ...

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 ...

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 ...

Setting up virtual local area networks or VLANs in your home network or home lab makes management of your network easier. You can use one as a guest network to share your internet connection with ...