NEI Post 004 – A bit about 802.1q Trunk ports

What is a trunk port, and how do they help your network? Relevant CCNA Topics Covered: Interconnecting Cisco Networking Devices Part 1 (100-105) Section 2.0 A trunk port is a port that has the ability to switch frames on multiple vlans. Switchports assigned to only one vlan are called access ports, and can be statically assigned…

NEI Post 003 – What is a VLAN?

What is a VLAN, and how do they help your network? Relevant CCNA Topics Covered: Interconnecting Cisco Networking Devices Part 1 (100-105) Section 2.0      VLAN stands for Virtual Local Area Network. It is a term and technology that you will deal with quite often as a network engineer. A VLAN and its application within…

NEI Post 002 – A Few Basic Cisco Ethernet Concepts

     This post will cover some basics of the IEEE 802.3 Ethernet specification and its application in Cisco gear. My expectation is that you have read or will read the Cisco Press study guides to gain a deeper understanding of some of the underlying technologies that I will reference in this document. Relevant CCNA…