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Network Design & Analysis

Network Design & Analysis. By Jonathan Pingilley. 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

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Network Design & Analysis

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  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 Open Shortest Path First Intermediate system to intermediate system • Routing Information Protocol • RIP Ver. 2 • Interior Gateway Routing Protocol

  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: http://www.youtube.com/watch?v=ek5IstTrnPk • An Introduction to the BGP Protocol: http://www.skullbox.net/bgp.php • BGP routing Process: http://www.youtube.com/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 • http://searchnetworking.techtarget.com/definition/autonomous-system

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