Named after an extinct sub-species of the African zebra, Quagga is a fork of the GNU Zebra project routing software package, which was discontinued in 2005, providing implementations of OSPF, RIP, BGP, and ISIS for *nix based systems.
Quagga can be used to turn your *nix system into a software based router, however it is more typically used as route server in an eBGP peering environment or as a route reflector in iBGP implementations that are not fully meshed. Continue reading How to install Quagga on Centos 6.5
This is the first in a series of posts on Spanning tree, in this post I will be describing the need for Spanning Tree Protocol (STP) in modern LAN environments. I will be concentrating on the main topics covered in the CCNA ICND 2 exam. Continue reading CCNA ICND 2: Spanning Tree Protocol Introduction
Well its a new year and that means New Year resolutions and that its time I get off my butt and finish my CCNA. I will be writing my ICND 2 exam at the end of January so expect quite a few
posts on the topics covered in the ICND 2.
The first of these topics is a review of how a switch forwards a frame through the network. This is one of the fundamental topics covered in the ICND 1 exam, however if you do not have a clear understanding of the logic then you will find the topics covered in the ICND 2 exam, and in everyday trouble shooting, very difficult to grasp. Continue reading CCNA ICND 2: How a switch forwards frames
Its been a while since my last post, mainly because I have been bitten by the Raspberry Pi bug. As a side effect of this I have been trying to learn Python to implement all the cool things the Raspberry Pi can do. I haven’t touched any programming languages since i was a student and barely scraped through Software Development 1, mainly because at the time I had no interest in C++, preferring micro controllers like the PIC and Intel 8051 where I could physically see the results of my code (making an LED blink is insanely satisfying). Continue reading Null route IOSXR Python script
If you are studying for your CCNA SP exam, or work with IOS XR and would like to learn more about the way IOS XR works you can now install IOS XRv in VirtualBox and integrate it with GNS3 version 1.1. In the following post I will describe the steps of setting up VirtualBox and GNS3 version 1.1 to use IOS XRv on Ubuntu 14.0.4. Continue reading Cisco IOS XRv in GNS3 using VirtualBox
In this post I will be configuring a Juniper Junos device to authenticate off of a local TACACS+ server.
I will be using GNS3 version 1.1, an Ubuntu 14.0.4 server running Shrubbery Networks TACACS+ daemon and a Junos olive image running JUNOS 12.1R1.9. Continue reading Configure TACACS+ on Junos devices
In this post I will be describing the steps required to install TACACS+ on Ubuntu 14.04 LTS. I will be compiling the TACACS+ daemon with ACL support for additional security.
I will also run through the basic configuration of Cisco devices to use TACACS+ for Authentication, Authorisation and Accounting. Continue reading TACACS+ on Ubuntu 14.04 LTS
In this post I will be running through the installation of the public release of GNS3 version 1.1 on a clean install of Ubuntu 14.04 LTS.
I am using the Ubuntu Gnome 14.04 LTS distribution, however I have also tested it on a clean install of the standard Ubuntu 14.04 LTS with unity Continue reading GNS3 v1.1 install on Ubuntu 14.04 LTS
I recently got a new laptop at work. It has one major downside, it only has 4GB of RAM which is soldered straight into the motherboard and therefore can not be upgraded. Also 500MB of the RAM is reserved for the GPU, so I only have about 3.5GB of useabe RAM. This is fine for running my day to day applications for work, but does not leave much wiggle room for running GNS3.
Luckily I work for a hosting company and we have quite a few servers lying around doing nothing. I managed to get hold of a decommisioned server with 2 quad core processors and 48GB of RAM, perfect to run a remote GNS3 server on. We mainly use Centos and since it is not an OS I am familiar with (I mainly use Ubuntu) I decided to give it a go and try something new. In this post I will run through the steps I went through to get GNS3 sevrer running on Centos as well as setting up the GNS3 GUI to connect to the remote server. Continue reading GNS3 and IOU remote server install on Centos 6.5
It is always useful to be able to connect your GNS3 labs to a real world network such as a physical Lab network of real Cisco devices, connected to you PC, or even to the Internet.
In this post I will provide step by step instructions to connect your GNS3 install to a physical network and to connect to the internet. Continue reading Connect GNS3 to the Internet