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Session based high bandwidth throughput testing.

RP2System and Network Engineering System and Network Engineering

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Student: Bram ter Borch

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Research Question2

Student: Bram ter Borch010101010101101010101110110100010010110111101101100101011011000100101011010101101100011001101001001001110100101001010010101001001001

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UDP vs TCP3

connectionless

8 byte header

no ordering

lightweight

connection oriented

20 byte header

ordering

heavyweight

reliable

congestion control

The Channel

Research Question4

What is needed to perform high bandwidth session based throughput tests and how to go

beyond pure network infrastructure testing? 010101010101101010101110110100010010110111101101010101001001010010100100010010010100101010100101001010100101010010101001010100101010100101010101010101001010100101001010101010101011100101011011000100101011010101101100011001101001001001110100101001010010101001001001

The term ”high bandwidth” references to at least 40Gb/s.

The term ”session based” references to TCP traffic.

Test environment5

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40Gb/s

100Gb/s 40Gb/s100Gb/s

40Gb/s

MGMT M

100Gb/s

1Gb/s1Gb/s

Vlan100:10.10.10.0/24

Vlan 66:10.60.66.0/24

Internet

4x10Gb/s

Tools6

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BoNeSi

pktgen-kernelMoonGen

pktgen-DPDK

First important result7

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DPDK is the way to go

Use cases8

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NR Use case DUT Explanation

UC1 Bandwidth generation Client The goal is to see if the client is capable of filling up the link

and to reach the maximum amount of pps

UC2 Throughput Switch/RouterGenerate the maximum amount of bidirectional data to make sure the intermediate hardware is able to forward at line rate

UC3 Session per second Client/Server Get the hardware limitations of the end hosts.

UC4 Application Server and intermediate devices

The clients will try to overload the server with requests at application level

Experiment UC1 bandwidth9

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Experiment UC1 PPS10

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Experiment UC3 HTTP link usage11

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Experiment UC3 sessions12

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Real world test13

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Router1BRouter1A

Firewall1 Firewall2

DC1-1A DC1-1B DC2-1A DC2-1B

SURFnetVCP

5x10Gb/s

100Gb/s

40Gb/s

SERVER A

40Gb/s

40Gb/s40Gb/s

2x40Gb/s

Active - passive

40Gb/s

2x40Gb/s

AE0 AE0

100Gb/s

Router

QFX10k2

CLIENT

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Real world result - bandwidth14

Student: Bram ter Borch

NGINX RAW TCP HTTP

Conclusion15

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DPDK is the way to go for high bandwidth session based throughput testing

The use cases are valid

The weakest link in a path can be found

Monitoring is very important

Future work16

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DPDK tests have to be run using 100Gb/s interfaces

IPv6 support has to be added to WARP

Other layer 7 protocols have to be added to WARP

Thank you

Questions

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