[fdb] test_fdb for arp_reply, arp_request, and ethernet fail because expected packet not received

sonic-net / sonic-buildimage

Scripts which perform an installable binary image build for SONiC

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[fdb] test_fdb for arp_reply, arp_request, and ethernet fail because expected packet not received #8102

Open theasianpianist opened 3 years ago

bingwang-ms commented 3 years ago

I can repro the issue now. But it looks like that the failure I reproed is caused by PR https://github.com/Azure/sonic-mgmt/pull/3897, which might be different with the problem mentioned in this issue. The port mapping getting from config_facts is incorrect after this PR. I will try to address the config_facts issue first.

bingwang-ms commented 3 years ago

The failure on dualtor-1 is not related to https://github.com/Azure/sonic-mgmt/pull/3897 since its SKU is Arista-7050CX3-32S-C32. The issue is still flaky only on this testbed. I added a fixture to record mux cable status if test failed https://github.com/Azure/sonic-mgmt/pull/4014. Hoping to find some clues.