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Cisco Switches
This article explains the procedure that should be followed to correctly shutdown/powerdown a Cisco Nexus 7000 series module and remove it from the chassis. We also include important tips that will h…
Cisco CallManager-CCME
Cisco's CallManager Express (Cisco router platform & UC520, UC540 & UC560) offers a number of customisation features aimed to allow the CCME administrator customise the system to suite the cu…
VPN Services & Guides
Despite innovations in security and technology, it’s difficult to remain anonymous online. Identifying information is seemingly everywhere – from malicious JavaScript tracking to the location service…
Routing
We are going to analyse what happens when routing occurs on a network (IP routing process). When I was new to the networking area, I thought that all you needed was the IP Address of the machine you…
SASE & SD-WAN Networks
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…
OpManager - Network Monitoring & Management
As technology evolves, so do our networks. Today's sprawling network infrastructures are intricate ecosystems, demanding more from IT teams than ever before.  Configuration management, complianc…
TCP - UDP Protocol Analysis
Understanding how each protocol fits into the OSI Model is essential for any network engineer. This page analyses how TCP is classified as a 'transport protocol' and gives you an insight into what to…
Routing
This article covers basic OSPF concepts and operation. We explain how OSPF works, how OSPF tables are built on an OSPF-enabled router and their purpose (Neighbour Table, Topology Table, Routing Table…
Cisco CallManager-CCME
This article covers the installation of Cisco's CallManager Express on Cisco routers. Here you'll find the necessary installation commands, files to download, router's HTTP server configuration comma…
Network Address Translation - NAT
Our previous article, Dynamic NAT - Part 1, covered the basic idea of Dynamic Network Address Translation. We are now going to take a closer look at the packets as they traverse the Dynamic NAT enabl…
Cisco Routers
Some time ago, when broadband and ADSL wasn't available, analog and digital (ISDN) modems were the only way to connect to the Internet. Even though today ISDN isn't used much for Internet connectivit…
Virtualization & VM Backup
When considering your VM backup solution, key features such as deduplication are incredibly important. This is not simply from a cost perspective but also an operational one. While is it true that de…

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