Installing JunOS Olive12.1 in VirtualBox on Linux

If you don't have a real Juniper equipment, there is way to practice with  JUNOS. Of course best way is to have the actual Juniper router since many functions cannot be simulated/emulated. Googling around you will find different methods either using VirtualBox, VMware or Qemu. Methods vary from extremely easy to difficult ( if you want to do it from scratch using FreeBSD - JUNOS is based on FreeBSD kernel.)
Below you can find instructions in 5 steps on how to install JUNOS Olive 12.1 in VirtualBox on Linux. For more details and capabilities of JUNOS Olive check this excellent website.

For this Lab setup I want to uses three Juniper routers in the topology they appear below.

Lab topology for testing three juniper routers

VirtualBox in GNS3 under Linux part2

Continuing the previous post  VirtualBox in GNS3 under Linux part1, I will show below the steps on how to make GNS3 work with Virtualbox using emulated VirtualBox host-only adapters. 

STEP 1 : Install VirtualBox and VMs
Install VirtualBox (current version is 4.3.6) and your favorite Virtual Machines.

VirtualBox in GNS3 under Linux part1

Following my previous post on Installing GNS3 v0.8.6 on Linux , now will make GNS3 work together with VirtualBox.

By the time GNS3 started supporting VirtualBox virtualization ( v0.8.1 ), things were made easier in using VMs in GNS3. You just tell to GNS3 which VMs to load. see below the steps in detail. For more info see GNS3 website.

Later ( easy installation ) it became even simpler and no need any more to start GNS3/VirtualBox in root access mode.

STEP 1 : Install VirtualBox and VMs
Install VirtualBox (current version is 4.3.6) and your favorite Virtual Machines.

802.1Q VLAN trunk in Linux

I need to configure an Ethernet interface as an IEEE 802.1q VLAN trunk on Linux Mint for Lab purposes so I can connect GNS3 with a physical Cisco Switch. So I will create 6 vlan interface using VLAN ID 101-106 on eth0 interface.

Install VLAN package

 sudo apt-get install vlan 

Installing GNS3 v0.8.6 on Linux

Below are the basic steps for installing GNS3 v0.8.6 on Linux Mint 15 ( should also work for other similar flavors) using the excellent work by  claydon_dan as posted in GNS3 Forum.

This version makes things much easier in installing GNS3 and Dynamips using PPA (Personal Package Archive). Reposting the steps below.

Step 1: Add PPA to your system

sudo add-apt-repository ppa:gns3/ppa

Installing TFTP server in Linux

I recently needed a file server to keep boot images and configuration files to be transferred on switches and routers.

I decided to use TFTP because of its simplicity and low memory requirements
Below the installation steps  used on a  computer loaded with Linux Mint 14.

Installing GNS3 0.8.3 on Linux Mint 13 Maya

Below are the basic steps for installing GNS3 0.8.3 on Linux Mint 13 Maya (and Linux Mint 14)
Following same steps should work on Ubuntu Linux as well.