1. Network Design & Analysis
By Jonathan Pingilley

2. Autonomous System Referred to as a routing domain
Unit of router policy (single or group of networks)
Can be controlled by a single admin or a group
Networks designed within an AS pass routing info to one another using an Interior Gateway Protocol (IGP)
Autonomous systems share information with other AS using a Border Gateway Protocol (BGP)

3. Interior Gateway Protocols
Distance-vector
Link-state
Routing Information Protocol
RIP Ver. 2
Interior Gateway Routing Protocol
Open Shortest Path First
Intermediate system to intermediate system

4. Lab Overview

5. What’s the Purpose
We want to make sure that in the case that one router goes down, a back up router is set in place so that a seamless transition from the “bad” router to the “good” router is made.
Allows admins to control a single network or groups of networks from a single location.
With this configuration we could essentially turn a router off while the other one takes over the responsibilities of routing.
This is used by certain ISPs to ensure that they are always “up and running”.

6. How do we accomplish this?
Quagga is a solution
Routing software suite that provides implementations of OSPF, RIP, BGP, and several other protocols for UNIX platforms.
This will allow us to utilize two Linux systems for routing purposes.
Configuration of eBGP and iBGP will be required
External and Internal

7. Deliverables Quagga: www.quagga.net
 Install and configuration sample: /watch?v=ek5IstTrnPk
 An Introduction to the BGP Protocol: /bgp.php 
BGP routing Process: /watch?v=J9_KJUFCkFE
Examine and take note of the AS w/(Quagga) setup process and explain the significance of this routing software. I would like to see some type of presentation or summary of the beginning pages of this lab guide.

8. References
/autonomous-system