Implementation and Simulation of LVS in ns-2 Presented by Yuzhuang - - PowerPoint PPT Presentation

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implementation and simulation of lvs in ns 2
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Implementation and Simulation of LVS in ns-2 Presented by Yuzhuang - - PowerPoint PPT Presentation

Mar 01, 2024 264 likes •458 views

Implementation and Simulation of LVS in ns-2 Presented by Yuzhuang Hu yhu1@sfu.ca Roadmap Project introduction and motivation Related work Implementation issues of lvs in ns Simulation scenarios Future work Project Goal and

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SLIDE 1

Implementation and Simulation of LVS in ns-2

Presented by Yuzhuang Hu yhu1@sfu.ca

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SLIDE 2

Roadmap

Project introduction and motivation Related work Implementation issues of lvs in ns Simulation scenarios Future work

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SLIDE 3

Project Goal and Motivation

Goal: implement and simulate lvs in ns-2 Understanding lvs Understanding ns Evaluate the performance of lvs Provide a platform for further research and

study of lvs

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SLIDE 4

What is lvs?

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SLIDE 5

LVS via NAT

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SLIDE 6

LVS via IP Tunneling

Intranet/Internet Intranet/Internet

IP Tunnel

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SLIDE 7

LVS via Direct Routing

Intranet/Internet Intranet/Internet

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SLIDE 8

Related work

DNS redirection Client side approach The server side application level scheduling

approach

The server side ip level scheduling

approach

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SLIDE 9

Implementation Issues in ns-2

How to accept a packet whose destination ip

address is different from the node’s address?

How to send a packet whose source ip

address is different from the node’s address?

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SLIDE 10

Solutions

Add a virtual ip address in ns agent

here_.addr_ virtual_addr_

Add a route for virtual ip address to

demultiplexer dmux_

Note the port of an agent is different from

the port of tcp or udp

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SLIDE 11

Node in ns2

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SLIDE 12

LAN in ns-2

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Simulation Scenario for VS via NAT

agent agent agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

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SLIDE 14

Simulation scenario via Tunneling

agent Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

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SLIDE 15

Simulation scenario for vs via direct routing

Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

Agent Agent Agent

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port ……………………. Realserver ip, port Realserver ip, port Realserver ip, port …………………….

agent

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Completed and ongoing work

Work completed

necessary changes in ns-2, simulation script, much of the implementation

Need to

complete the implementation soon, simulation, final report

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Future work

Add support for tcp and ftp Think about how to deal with the extremely

busy web site