GRE Tunnel Between Cisco and Linux

Generic Routing Encapsulation – GRE is a tunneling protocol originally developed by Cisco that encapsulates various network protocols inside virtual point-to-point tunnel. It transports multicast traffic via GRE tunnel so it allows passing of routing information between connected networks. As it lacks of security it is very often used in conjunction IP SEC VPN that on […]
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Arista vEOS on GNS3

EOS (Extensible Operating System) is Linux-based network operating system developed by Arista Networks that runs on all Arista switches. Virtual EOS (vEOS) is single image and can be run as a virtual machine. The article describes how to set up vEOS virtual machine and connects it to GNS3 in order to test EOS functionality. Host […]
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How to run Juniper Firefly Perimeter vSRX on GNS3

Firefly Perimeter is a virtual security appliance that provides security and networking services at the perimeter in virtualized private or public cloud environments. It runs as a virtual machine (VM) on a standard x86 server and delivers similar security and networking features available on branch SRX Series devices. However not all the features that are supported […]
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Cisco Virtual IOS on GNS3

The tutorial discuss the use of  GNS3 software to run Cisco Virtual IOS (vIOS). Cisco vIOS is  shipped and supported as a part of the Cisco’s One Platform Kit (onePK) that is distributed in form of virtual machine. It might be downloaded with Cisco.com account. Currently, it is not required to have Cisco account associated with service […]
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Running Mikrotik RouterOS x86 on GNS3

MikroTik RouterOS is the stand-alone operating system of MikroTik RouterBOARD hardware. It can also be installed on a PC and will turn it into a router with all the necessary features – routing, firewall, bandwidth, management, wireless access point, backhaul link, hotspot, gateway, VPN server and more. The tutorial explains how to install RouterOS on Qemu […]
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VOIP HOME LAB - Part 1.5.2 Open vSwitch and VMware Workstation Configuration

In a previous tutorial we described how are the network devices and virtual machines connected in our VoIP home lab network. We will continue with Open vSwitch and VMware Workstation configuration. 1. VMware Workstation Configuration Start VMware Workstation. $ sudo vmware a) Create new host-only interfaces By default three VMware interfaces – vmnet0, vmnet1 a vmnet8 are […]
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GNS3, Qemu, VirtualBox and Dynamips on Debian

GNS3 is based on Dynamips and Dynagen (a text-based front-end for Dynamips) to create a complete virtual Cisco network, adding many additional features and most importantly making it easy to create, change and save your network topologies. It also supports Qemu virtualizer/emulator and VirtualBox. The tutorial shows installation of Qemu and Dynamips on Debian from sources. […]
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Cisco CSR 1000v Installation on Qemu Virtual Machine

The Cisco IOS XE Release 3.10 brings support for Kernel Based Virtual Machine (KVM) hypervisor. Thanks to the this awesome enhancement, Cisco CSR 1000v running IOS XE  3.10 can be easily connected to devices running inside GNS3 topology.  The goal of this tutorial is to install CSR 1000v IOS XE 3.10 on a virtual machine […]
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Testing 802.1Q and Multicast Traffic between the Cisco CSR 1000v and the Cisco 3725 Router

In a previous tutorial we explained how to connect Cisco CSR 1000v running on VMware player to the Cisco Multiservice access router 3725 emulated by Dynamips and running inside GNS3. We will use the same network topology in order to test if the multicast traffic and 802.1Q tagged traffic is transferred correctly between the routers. Picture 1 […]
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Connecting Cisco CSR 1000v Series Cloud Services Router to GNS3

The goal of the article is to install Cisco Cloud Services Router (CSR) 1000v on VMware Virtual Machine and connect CSR 1000v router to the Cisco 3725 router running inside GNS3.  Testing transfer of multicast and 802.1Q tagged traffic between the routers is explained in the upcoming tutorial. The LAB Software Requirements Linux Fedora 17 x86_64 Cisco […]
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