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NEMO

NEMO. Lightweight Mobile Agent Technology. Outline. Mobile Agents What are they ? Advantages and Applications NEMO Architecture Details Demo: Mobile ePlazza Demo: Virtual NEMO. What are Mobile Agents. Agent : an entity which performs a task on behalf of someone

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NEMO

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  1. NEMO Lightweight Mobile Agent Technology

  2. Outline • Mobile Agents • What are they ? • Advantages and Applications • NEMO • Architecture • Details • Demo: Mobile ePlazza • Demo: Virtual NEMO

  3. What are Mobile Agents • Agent: an entity which performs a task on behalf of someone • Mobile agent: program & data moving between heterogeneous hosts performing specific tasks

  4. Visualization Example

  5. Advantages & Applications • Advantages • Move computation to data • Asynchronous execution • Dynamic adaptation, fault tolerant • Flexible maintenance • Applications • Service availability, discovery, monitoring • Information retrieval • Network management, security • Dynamic software deployment

  6. General Architecture Applications static Environment N E M O Abstract Network Network NEMO • Agent Language

  7. N N N N Heterogeneous Environment ePlazza valentia Printer ePlazza haro bridge LAN bridge BT ePlazza iuli

  8. Incoming Wave Queue Incoming Wave Queue Incoming Wave Queue Tail Nodal Variables Head . Frontal Variables Detailed Architecture User Application Threads System Call Handler Interpreter Executor System Call Dispatcher Rules Visitor Sectors Visitor Parser Heart Thread Wave (Agent) Communication Thread Network Abstract Net Communicator Bluetooth Communicator LAN Communicator

  9. DEMO: mobile ePlazza 1. Profile Matching Dari Age: 22 Search: 31-35 match ! match ! Rad Age: 34 Search: 20-25 Loba Age: 33 Search: 20-25, 36-40

  10. DEMO: mobile ePlazza 2. Multi-user Chat

  11. N N N N Virtual NEMO Visualization / Development Virtual Host Switch Host iuli Host finite Host vasi Host n55 console console console chat console chat Virtual Net Communicator

  12. DEMO: Virtual NEMO 1. Chat2. Resource Discovery

  13. Questions

  14. Language example:Search for printer and return // VARIABLE INIT Ntemp3292=0000. // holds prev node on path, this is base Fp=C. // holds name of node prior to jump // PROCEDURES // pass check- pass only once by each node, record path Fpcheck = ` Ntemp3292 == Nonexistent. Ntemp3292 = Fp. Fp=C. '. // Printer check Fgo=` IF( Nprinter==Nonexistent, ^Fbranchout, // if no known printer then look onward FprinterData=NprinterData. ^Fhopback.). '. // we are path to printer, take data back to sender // branch outwardand find printer Fbranchout=` link#. ^Fpcheck. ^Fgo. '. // recprintinfo- as wave passes hosts on the way back, it stores print info Frecprintinfo = ` (Nprinter/=Nonexistent. T=rknown. ), // already know about printer, stop. (Nprinter==Nonexistent. Nprinter=Fp. NprinterData=FprinterData. ^Fhopback). // store way to printer & data in node'. // hop back- either stop or hop back and record path Fhopback = ` (Ntemp3292 == 0000. x?print_scanreturned), (Ntemp3292 /= 0000. T=hoppingback. Fp=C. link#Ntemp3292. ^Frecprintinfo. )'. // LAUNCH ^Fgo.

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