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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 - RIP and RIPng TCP/IP Volume 1 Topology

[Networking Lab] RIP and RIPng configuration exercise (TCP/IP Volume 1)

Hi there! Yet another GNS3 laboratory for a bit of practice. This time I arranged the starting configuration to play with RIP and RIPng following the exercise found on TCP/IP Volume 1, Chapter 6. As always, let me provide you with the topology picture: This time the picture is also showing what are the configurations […]

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TCP_IPVol1_Chap3_exer3_GNS3_topo

[Networking Lab] Static route and load sharing practising (TCP/IP Volume 1)

This GNS3 laboratory is a simple reproduction of the Configuration exercise number 3 of Chapter 3 (static routing) of the well known book TCP/IP Volume 1 for the CCIE professional development. I think it is a very good practice to review the configuration of static routes to achieve redundancy with utilization of floating static routes […]

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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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