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Adding testplan for sflow#554

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lguohan merged 1 commit intosonic-net:masterfrom
chitra-raghavan:sflow-doc
Feb 4, 2020
Merged

Adding testplan for sflow#554
lguohan merged 1 commit intosonic-net:masterfrom
chitra-raghavan:sflow-doc

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Adding test plan for Sflow

@lguohan lguohan merged commit 90a6aae into sonic-net:master Feb 4, 2020
lguohan pushed a commit to sonic-net/sonic-mgmt that referenced this pull request Feb 4, 2020
How did you do it?
- The test will run on the t0 testbed. The script is validated in sonic-vs image with vms-kvm-t0 topology loaded.
- 1 port from each port channel is used for sending traffic. Sflow is enabled on these 4 ports
- 2 ports from Vlan1000 are removed and assigned with ip address and used to reach sflow collector in ptf docker .
- Traffic is sent from ptf docker with different packet sizes to the port channel interfaces which are enabled with sflow .
- Collection is implemented using the sflowtool. Counter sampling output and flow sampling output are directed to a text file. The test script parses the text file and validates the data according to the polling/sampling rate configured and the interfaces enabled.

For this test to run sflowtool to be installed in ptf docker sonic-net/sonic-buildimage#4045

Test plan Document : sonic-net/SONiC#554
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