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 ...

The real question is do you want this device to be pushing/popping STags or just passing them along. Most ASICs shouldn't have an issue with the latter but if you need it to manipulate tags it's ...

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 ...

Excerpt from CCNA Practice Questions (Exam 640-802), 3rd Edition. Select the appropriate media, cables, ports, and connectors to connect switches to other network devices and hosts. Explain the ...

I was reading about the Cisco EEM and came across an interesting script that can monitor the interface state through the syslog messages. You can set it up to administratively shutdown an interface if ...