[action] [PR:19117] [bgp_scale] Fix announce_routes for t1-isolated topo#437
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mssonicbld merged 1 commit intoAzure:202412from Jun 23, 2025
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<!-- Please make sure you've read and understood our contributing guidelines; https://github.com/sonic-net/SONiC/blob/gh-pages/CONTRIBUTING.md Please provide following information to help code review process a bit easier: --> ### Description of PR <!-- - Please include a summary of the change and which issue is fixed. - Please also include relevant motivation and context. Where should reviewer start? background context? - List any dependencies that are required for this change. --> Summary: Fixes # (issue) ### Type of change <!-- - Fill x for your type of change. - e.g. - [x] Bug fix --> - [ ] Bug fix - [ ] Testbed and Framework(new/improvement) - [ ] New Test case - [ ] Skipped for non-supported platforms - [ ] Test case improvement ### Back port request - [ ] 202205 - [ ] 202305 - [ ] 202311 - [ ] 202405 - [ ] 202411 - [ ] 202505 ### Approach #### What is the motivation for this PR? Fix incorrect route announcing in isolated T1 topos #### How did you do it? 1. For announce_routes.py, update to announce correct routes - Announce more routes, details: sonic-net/sonic-mgmt#19128 - Add support to announce different sets from downstream 3. For test_ipv6_bgp_scale, because T0 and T2 would both announce default routes, but T0s' has the shorter as path. Hence by default there are only default routes from T0s taking effect. In test, after shutdown all T0 neighbor ports, default routes wouldn't disappear, but default routes from T2 would appear. Hence update routes verification here. #### How did you verify/test it? Run tests #### Any platform specific information? #### Supported testbed topology if it's a new test case? ### Documentation <!-- (If it's a new feature, new test case) Did you update documentation/Wiki relevant to your implementation? Link to the wiki page? -->
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Original PR: sonic-net/sonic-mgmt#19117 |
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Description of PR
Summary:
Fixes # (issue)
Type of change
Back port request
Approach
What is the motivation for this PR?
Fix incorrect route announcing in isolated T1 topos
How did you do it?
How did you verify/test it?
Run tests
Any platform specific information?
Supported testbed topology if it's a new test case?
Documentation