[action] [PR:14202] [dualtor] Fix flakiness of route/test_static_route.py #14646
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* [dualtor] Fix flakiness of route/test_static_route.py Fixes: 1) Adding "setup_standby_ports_on_rand_unselected_tor" fixture to setup ports in standby mode in case of active-active topology. This is needed for packets not to go out of unexpected tor and cause test failures. 2) Test is performing "config_reload", this can cause switchover (active to standy and viceversa). But rand_selected_dut should be in active state for traffic verification to pass, so after config_reload we need to toggle ports to rand_selected_dut. * Addressing review comments. * Reverting minor unintended change.
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Original PR: #14202 |
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Description of PR
Summary:
Fix flakiness of route/test_static_route.py due to packet going to unexpected ToR
Fixes # https://github.com/aristanetworks/sonic-qual.msft/issues/230
Type of change
Back port request
Approach
What is the motivation for this PR?
As part of traffic verification, sometimes packet is going out of wrong ToR and causing test failures with signature something like
AssertionError: Received expected packet on port 30 for device 0, but it should have arrived on one of these ports: [52, 0, 36].Reason being, in case of
dualtor-aa, both the duts will be in active state and packet can go out ofrand_unselected_dut.How did you do it?
setup_standby_ports_on_rand_unselected_torfixture to setup ports in standby mode in case of active-active topology. This is needed for packets not to go out of unexpected tor and cause test failures.rand_selected_dutshould be in active state for traffic verification to pass, so after config_reload weneed to toggle ports to rand_selected_dut.
How did you verify/test it?
Stressed the test on
Arista-7260CX3-D108C8and test is passing.Any platform specific information?
Supported testbed topology if it's a new test case?
Documentation