Networking

Networking

What is an Access Control List (ACL)? Standard and Extended ACLs Explained

Network devices constantly receive and forward packets. But not every packet should be allowed to reach every destination.

Networking

What is Port Security on a Cisco Switch? MAC Limits, Sticky MAC and Violation Modes

A network switch connects many devices together, but an improperly configured switch port can allow unauthorized devices…

Networking

What is Inter-VLAN Routing? Router-on-a-Stick and Layer 3 Switches Explained

VLANs are used to logically separate devices within a network. However, devices in different VLANs cannot communicate directly…

Networking

What is EtherChannel? Link Aggregation, Redundancy, LACP and PAgP Explained

Modern networks often require more bandwidth and redundancy between switches. Connecting two switches with a single Ethernet…

Networking

Access Port vs Trunk Port: VLAN Traffic and 802.1Q Tagging Explained

If you are learning VLANs and Cisco switching, one of the most important concepts to understand is the difference between…

Networking

STP vs RSTP: What is the Difference?

Redundant links are important in enterprise networks because they provide backup connectivity. However, they can also create…