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Enhancing Click Modular Router with Mobile Agents: Implementation and Configuration Guidelines

This document outlines the implementation of mobile agents within the Click modular router framework, focusing on the use of simple elements to streamline network flows. It details the configuration of Home and Foreign Agent elements, handling registration requests, encapsulation, and de-encapsulation of packets. Key features include reducing function calls and optimizing port handling (PUSH, PULL, AGNOSTIC). The objectives include enhancing protocol compliance, speeding up processing with hash classes, and thorough integration with existing toolkits.

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Enhancing Click Modular Router with Mobile Agents: Implementation and Configuration Guidelines

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  1. Mobile Agents in Click Tushar Mohan

  2. Click Elements • Graphs made of simple elements • Separate flows have separate ports • Common case fast • Reduce function calls • Ports of elements - PUSH, PULL, AGNOSTIC

  3. Advertisements and Registration M F H

  4. Router/Agent Advertisement Element ToDevice EtherEncap FromDevice Classifier Queue AgentAdvertisement

  5. Home/Foreign Agent Element ToDevice eth1 To Classifier 1 1 FromDevice eth1 2 IP 0 0 Strip Agent LookUpIPRoute FromDevice eth0 ARPResponder Classifier

  6. Home Agent Configuration • Input 0 : • Normal IP + IP for forwarding + UDP registration requests • Input 1 : • Agent Interface Ethernet packets for which we Proxy/Gratuitous ARP • Possible de-registration request • Output 0 : • Normal IP + Encapsulated IP • Output 1 : • Unprocessed Ethernet packets from Agent Interface • Output 2 : • Proxy/Gratuitous ARPs

  7. Foreign Agent Configuration • Input 0 : • Normal IP + Encapsulated IPIP + UDP registration replies • Input 1 : • Registration requests Eth/IP/UDP + Passing ethernet packets • Output 0 : • Normal IP + Relayed registration requests • Output 1 : • Unprocessed Ethernet packets from Agent Interface • Output 2 : • De-capsulated packets + Relayed replies

  8. Test Configuration MH 202.54.15.1 202.54.1.1 H 192.168.0.1 F 192.168.10.1 202.54.15.10 202.54.15.1 Ex-MH

  9. Schematic for agent.click InfiniteSource 1(in) F H 0(in) (out)0 InfiniteSource 1(out) 0(in) 0(out) 1(out) Discard Discard 2(out) 2 (out) Print Print Discard Discard

  10. Adv.click AgentAdvertise( HOME, 192.168.123.116, 224.0.0.1, 0.0.0.0, REG_LIFE=255, MAX=5, ENCAP=GRE, DEFAULT_ROUTER=false, MIN=5 ) ->IPPrint("Adv", CONTENTS=hex, ID=true) ->Discard;

  11. What Remains ? • Not fully compliant (RFC2002) • ARPs, validation, authentication • multiple simultaneous binding • Speed-up (hash classes) • Hardware testing • Documentation • Integration with the MIT toolkit

  12. Objectives • Add to the Click tool-kit • Practically implement a protocol • Enjoy the project

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