Articles That Might Interest:

Ethernet Protocol, CSMA/CD, Collisions

Early Ethernet Collisions

In this example, we will refer to an imaginary Ethernet network consisting of Stations A and B and any number of other stations. The status of the network is such that the wire is idle (nobody is tal…

Network Cabling

Fibre Optic Cables - Single-Mode Multi-Mode - Adv…

In this article, we'll talk about Fiber optic cables and how it has changed the design and implementation of network infrastructures, providing high Gigabit speeds, increased security, flexibility an…

Ethernet Protocol, CSMA/CD, Collisions

Propagation Delay

You may know that the minimum frame size in an Ethernet network is 64 bytes or 512 bits, including the 32 bit CRC. You may also know that the maximum length of an Ethernet cable segment is 500 meters…

SASE & SD-WAN Networks

MPLS vs. SD-WAN vs. Internet vs. Cloud Network. C…

The Wide Area Network (WAN) is the backbone of the business. It ties together the remote locations, headquarters and data centers into an integrated network. Yet, the role of the WAN has evolved in r…

Virtualization & VM Backup

How to Enable or Disable SSH on VMware ESXi via W…

SSH access to VMware’s ESXi server is by disabled by default however there are many reasons where SSH might be required. VMware and System administrators often find the need to perform advanced admin…

Cisco CallManager-CCME

Risk Management for Cisco Unified Communication S…

As technology has advanced, things have become simpler yet more complex. One prime example is that of today’s communication networks. With the evolution of VoIP, the most obvious convergence is that…

Cisco Routers

Cisco Router Password Recovery

Password recovery is a fairly frequently used procedure for administrators and engineers. Even though we usually stack our passwords in some word, excel or text file, it's very easy to forget to upda…

Network Fundamentals

Network Switches & Bridges

Network Switches are the evolution of Hubs and Repeaters, and enable the creation of networks by connecting multiple devices together. They are critical components in computer networking and are used…

Subnetting

IP Subnet Calculator

This free online Subnet Calculator provides a fast and easy way to calculate all aspects of any IP Address and Subnet Mask. Simply enter your desired IP Address and Subnet Mask below and press Calc…

Windows Servers

Windows 2012 Server NIC Teaming – Load Balancing/…

NIC Teaming, also known as Windows Load Balancing or Failover (LBFO), is an extremely useful feature supported by Windows Server 2012 that allows the aggregation of multiple network interface cards t…

Routing

OSPF - Part 4: OSPF Neighbor States – OSPF Neighb…

This is the third article of our OSPF series which analyzes the different OSPF States routers go through during the OSPF discovery and neighbor forming process. We analyze OSPF states (Init state, 2-…

VLAN Networks

VLAN Tagging - Understanding VLANs Ethernet Frames

We mentioned that Trunk Links are designed to pass frames (packets) from all VLANs, allowing us to connect multiple switches together and independently configure each port to a specific VLAN. However…