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Cisco Switches
Cisco Nexus 7000 Series Module Shutdown and Remov…
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…
Windows Servers
The Importance of a Hyper-V & VMware Server Backu…
Using Hyper-V Server virtualization technology, you can virtualize your physical environment to reduce the cost of physical hardware. As part of IT best practices, you implement monitoring solutions…
Linux - Unix
Implementing Virtual Servers and Load Balancing C…
What is Server Virtualization?
Server virtualization is the process of apportioning a physical server into several smaller virtual servers. During server virtualization, the resources of the ser…
Network Fundamentals
Next-Gen Firewalls & Topologies. Designing & Buil…
Next-generation firewalls (NGFWs) and DMZ zones are two critical components of network security that work hand in hand to protect an organization's network from external threats. Firewalls act as a b…
Network Protocols
IPv6 Subnetting - How and Why to Subnet IPv6
In the previous tutorials, I went through the need for IPv6, and followed it up by drawing out the salient features which overcomes issues with IPv4. We took the journey of looking inside the headers…
Cisco CallManager-CCME
Connecting & Configuring SPA8000 with UC500, 520…
When it comes to connecting multiple analog phones to VoIP systems like Cisco’s Unified Communication Manager Express (CallManager Express) or UC500 series (Includes UC520, UC540, UC560), the first t…
Cisco Routers
Understanding MPLS IP VPNs, Security Attacks and…
What Are MPLS Networks?
Multi-Protocol Label Switching (MPLS) networks are the next-generation of networks designed to allow customers create end-to-end circuits across any type of transport m…
Cisco Firewalls
Upgrading - Uploading AnyConnect Secure Mobility…
This article will show how to download and upload the newer AnyConnect 4.x VPN clients to your Cisco ASA Firewall appliance (5500 & 5500-X Series) and configure WebVPN so that the newer AnyConnec…
Routing
Interior Gateway Protocol - IGRP
IGRP (Interior Gateway Routing Protocol) is a Cisco proprietary distance-vector routing protocol used in enterprise networks to exchange routing information between routers. IGRP is a predecessor to…
Ethernet Protocol, CSMA/CD, Collisions
The Ethernet II Frame Format
The following is a description of the frame format described by the original Ethernet Version II specification as released by DEC, Intel, and Xerox. Like the 802.3 spec, the Version II spec defines a…
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…
TCP - UDP Protocol Analysis
Transmission Control Protocol - Part 4: In-Depth…
This article is an introduction to the 7-page TCP Header analysis section that follows. We briefly view each section of the TCP Header and then move on to its analysis using detailed colourful diagra…
Wi-Fi Key Generator
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