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gns3

OSPF topology

[Networking Lab] GNS3 Lab to practice with OSPF LSA types and areas (TCP/IP Volume I)

Here we go with another Lab with GNS3 and IOU. This time is to review and practice the OSPF configurations as well as LSA types, Areas, routing table, virtual links and whatever you’d like to study for OSPF. The exercise rebuilds the one reported in TCP/IP Volume I book on Chapter 8. The topology is […]

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GNS3 802.1x Topology

[Networking Lab] Configure 802.1x authentication on Cisco switch IOU with GNS3

In this post I will show you again the power of GNS3 in doing laboratories to test new features. I will provide you a Lab example to configure and test port-based 802.1X authentication over a wired connection having a Windows Server 2012 configured as AD, DHCP and NPS/Radius, a switch running on IOU Layer 2 […]

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GNS3 ready to use

[Networking - Lab] Ready-to-go GNS3 Switch and Routers config for your lab.

A lot of times, when you would like to reproduce some behavior in a Network, you need to add a lot of basic configs on your routers and switches. You need to add loopback, ip address, unshut interfaces, create vlans, activate SVIs, configure access ports and so on. If you have not too much time, […]

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Tunnel GRE + IpSEC Topology

[Networking] Alternatives to packet tracer (was: Softwares to build a virtual lab)

Maybe this article will not bring to your knowledge something new, but it happened to me in the recent past that not all the friends and collegues I was talking with were aware of some of the best softwares a Network guy can use to practice with technologies that are in use in the market. […]

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[Networking - LAB] Basic MPLS topology

While reviewing MPLS topics you can’t avoid to try how the technology works doing some labs. This is particularly valid if you don’t have the opportunity to “touch” the technology with your daily job. That’s why I decided to rebuild the topology of MPLS cloud used in the INE course for the MPLS exam. As […]

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OSPF Area types LAB topology screenshot

[Networking - LAB] OSPF, get familiar with LSA types and AREAs

I am always reviewing Routing topics to have them all the time fresh in my mind, especially when I don’t practice with them a lot during daily works. This time I decided to refresh my knowledge about OSPF Areas and OSPF LSA types. To do that I prepared a very simple laboratory topology using GNS3 […]

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