[Cherry-pick 202405] New TC for PC Test on higher lag ids #16142
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This test was added recently by sonic-net#16142 And does config reloads and reboots causing loganalyzer to fail
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`test_po_update_with_higher_lagids` was added recently by sonic-net/sonic-mgmt#16142 And does config reloads and reboots causing loganalyzer to fail. ### Type of change - [x] Bug fix - [ ] Testbed and Framework(new/improvement) - [ ] New Test case - [ ] Skipped for non-supported platforms - [ ] Test case improvement ### Back port request - [ ] 202012 - [ ] 202205 - [ ] 202305 - [ ] 202311 - [x] 202405 - [x] 202411
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`test_po_update_with_higher_lagids` was added recently by sonic-net/sonic-mgmt#16142 And does config reloads and reboots causing loganalyzer to fail. ### Type of change - [x] Bug fix - [ ] Testbed and Framework(new/improvement) - [ ] New Test case - [ ] Skipped for non-supported platforms - [ ] Test case improvement ### Back port request - [ ] 202012 - [ ] 202205 - [ ] 202305 - [ ] 202311 - [x] 202405 - [x] 202411
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Description of PR
Summary:
Master PR #14842
The Test Cases focuses on the below PR Changes of lagid allocation to portchannel and new SYSTEM_LAG_IDS_FREE_LIST
sonic-net/sonic-platform-daemons#542
sonic-net/sonic-swss#3303
sonic-net/sonic-buildimage#20369
This PR is dependent on the above mentioned PR.
Type of change
Back port request
Approach
What is the motivation for this PR?
Verification of the new feature of LAG ID allocation to PortChannel and new list of SYSTEM_LAG_IDS_FREE_LIST
How did you do it?
The test case verifies traffic flow between all port channels in a full mesh topology. It begins with a system reboot to allocate the lower series of LAG IDs and validate the SYSTEM_LAG_IDS_FREE_LIST. Next, the LAG IDs are incremented through temporary port channel additions and deletions. A configuration reload is then performed to allocate higher LAG IDs to the port channels, followed by a final validation of mesh traffic.
How did you verify/test it?
Verified on T2 VOQ Chassis
Any platform specific information?
Supported testbed topology if it's a new test case?
Documentation