Post Views: 22,562 Practical OSPF Configuration, SPF, ECMP, Area Routing, and Troubleshooting 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 students – Maximum 16 students What Students are Saying About this Class: Course Description Open Shortest Path First (OSPF) is one of the most important dynamic routing protocols used in
CSI-HO-028-B – OSPF Routing in a Day – 1 Day Read More »
Post Views: 21,968 Practical BGP Fundamentals, eBGP, iBGP, Route Reflectors, and Confederations 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 students – Maximum 16 students What Students are Saying About this Class: Course Description Border Gateway Protocol (BGP) is the routing protocol used to exchange network reachability information between autonomous
CSI-HO-028-C – BGP Routing in a Day – 1 Day Read More »
Post Views: 12,308 In this article we will get you started with the iPerf tool. We will be using it in a Linux environment, but know that it is available for all systems at http://iperf.fr. iPerf is used to test performance, throughput, packet loss, and jitter on TCP/IP networks. iPerf defaults to testing TCP – port
Getting started with iPerf – an illustrated step by step procedure Read More »
Post Views: 12,106 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 Students – Maximum 16 Students Course Description Ethernet is the foundation of modern Local Area Networks and is also widely used throughout enterprise, broadband, metropolitan, data-center, and service-provider networks. Anyone responsible for installing, operating, supporting, or troubleshooting networks needs
CSI-HO-009-A – L2 Ethernet in a Day – 1 Day Read More »
Post Views: 5,198 Using Wireshark in Microsoft Windows reveals some quirks that naturally leave you scratching your head as to what is going on. For example, when I launch Wireshark on my Windows 10 system I see a bunch of different interfaces. Some make sense (Wi-Fi, Ethernet 2) but others….: What are all the Local
What are all the Microsoft local area connections? Read More »
Post Views: 12,249 VXLAN Fundamentals, Encapsulation, Data-Plane and Control-Plane Learning Half-Day Instructor-Led Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Virtual Extensible LAN (VXLAN) has become an important technology for building scalable data-center and modern network fabrics. Traditional Ethernet VLANs provide useful Layer 2 segmentation, but
CSI-IL-013 – Understanding VXLAN Read More »
Post Views: 4,170 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture Just introduced this week is a terminal version of tshark that looks like the Wireshark GUI call termshark. Why? Let’s say you run either Virtual Machines or
A Terminal Version of tshark – we love it! Read More »
Post Views: 32,395 Practical Network Security, Firewalls, IPSec, SSH, TLS, Scanning, and Wi-Fi Security 2-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Network security is an essential skill for anyone responsible for designing, operating, supporting, testing, or troubleshooting IP networks. CSI-HO-029 – Hands-On
CSI-HO-029 – Hands-On Security in IP Networks/Protocols Read More »
Post Views: 12,440 2-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students Course Description Wi-Fi is one of the most widely used network access technologies, making wireless security an essential skill for network engineers, broadband technicians, IT professionals, support personnel, and anyone responsible for protecting network
CSI-HO-030 – Hands-On Understanding Security in WLAN/Wi-Fi Networks Read More »
Post Views: 6,994 One way to examine your network configuration in Linux is to use the “ip” command. I have attached a cheat sheet from Red Hat. By itself, it will show its options: So much going on here, and I find the help and man pages to be light on clarity and examples.
The Linux ‘ip’ Command in Networking Read More »
Post Views: 8,354 Equal-Cost Multi-Path (ECMP) is a forwarding mechanism for routing packets along multiple paths of equal cost with the goal to achieve almost equally distributed link load sharing. This, of course, significantly impacts a router’s next-hop (path) decision. For further details, look at RFC 2991, “Multipath Issues in Unicast and Multicast Next-Hop Selection,”
Detecting ECMP in Linux using Paris and Dublin Traceroute Read More »
Post Views: 1,965 My recent blog post regarding Linux being the operating system of choice if you are supporting/testing/operating a network has spawned some great discussion. Emerging the discussion has come a request to write up a starting point list of commands for Linux beginners. I said “Sure, I can do that!” I thought it
Linux Starting Point – Commands You Need To Know Read More »
