Test Setup

Before scheduling any jobs validate the physical testbed to make sure all links are connected and are operationally UP, also we need a clean configuration file with valid interface settings (breakout, speed, FEC, admin status, etc.), no IP interfaces, no BGP instances, and no QoS. The scripts will use this clean configuration file to restore the DUT to its default configuration as part of the clean-up process.

The cleanup configuration file should be created at /etc/sonic/clean_config.json. The clean configuration file follows the config_db.json format. It must include the port-related settings for lane mapping, speed, and admin status.

How to create a clean config file

• For every DUT in the testbed, backup the default config(if needed)

• Start with the default configuration after a fresh installation of SONiC

• Alternatively, you can also create a clean config by editing the config_db.json as below

  • Edit config_db.json and remove the following configuration blocks and save the file

• Configure the below list through config_db.json:

  • The management IP address for eth0 and gateway

• Port breakout (if any)

• Port speed, FEC, Auto-negotiation on links connected to other devices and Ixia

• Configure "admin_status": "down"

• Save config_db.json

• Copy config_db.json to /etc/sonic/clean_config.json

• Load the configuration on the device

• Add the following line to /etc/sonic/frr/vtysh.conf

• Cleanup the BGP configuration from FRR

Chaos Test Setup

TestBed File

Build the Chaos testbed file using "~/testbeds/ftas_chaos_topo.py"

Disable all cleanup options

The chaos test suite loads a base configuration to all DUTs and Ixia for its test scripts. So ensure the following variables are set to False in the testbed file.

Clean up DUTs Configuration Manually

Please make sure DUTs have a clean or default configuration before the Chaos test run.

Remove the test statistics report file

Chaos suite generates a statistics report file at ~/reports/report.txt to track its execution status and metric data for all test scripts. So please make sure to remove this file before running the Chaos test to avoid Ixia library errors