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This is an automated cherry-pick of #5274

/assign cybertron

/cherrypick release-4.19 release-4.18

When a slave is detached from a bond (e.g. during NetworkManager
reactivation) before LACP negotiation completes, some Cisco switches
mishandle LACP packets with agg=0, and disable the port.

To work around this, if a bond slave is UP and LACP is enabled, wait
up to 5 seconds for both ends to reach the "collecting,distributing"
state before reattaching the interface. If negotiation does not
complete within this window, a warning is logged but configuration
continues.

Note: This is a switch error, and sending agg=00 is valid. This is a
workaround that only hides the issue on affected hardware and may
reduce system's fault tolerance.

Signed-off-by: Xin Long <[email protected]>
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@openshift-cherrypick-robot: Jira Issue OCPBUGS-60805 has been cloned as Jira Issue OCPBUGS-62602. Will retitle bug to link to clone.
/retitle [release-4.20] OCPBUGS-62602: configure-ovs: work around a Cisco switch issue

In response to this:

This is an automated cherry-pick of #5274

/assign cybertron

/cherrypick release-4.19 release-4.18

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@openshift-ci openshift-ci bot changed the title [release-4.20] OCPBUGS-60805: configure-ovs: work around a Cisco switch issue [release-4.20] OCPBUGS-62602: configure-ovs: work around a Cisco switch issue Oct 1, 2025
@openshift-ci-robot openshift-ci-robot added jira/severity-critical Referenced Jira bug's severity is critical for the branch this PR is targeting. jira/valid-reference Indicates that this PR references a valid Jira ticket of any type. labels Oct 1, 2025
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@openshift-cherrypick-robot: This pull request references Jira Issue OCPBUGS-62602, which is invalid:

  • release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
  • expected dependent Jira Issue OCPBUGS-60805 to target a version in 4.21.0, but it targets "4.21" instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

In response to this:

This is an automated cherry-pick of #5274

/assign cybertron

/cherrypick release-4.19 release-4.18

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@openshift-ci-robot openshift-ci-robot added the jira/invalid-bug Indicates that a referenced Jira bug is invalid for the branch this PR is targeting. label Oct 1, 2025
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/verified by testing in Cisco environment with the content of main (4.21)
/lgtm
Clean cherry-pick that should work independently of the MCO release version.

@openshift-ci-robot openshift-ci-robot added the verified Signifies that the PR passed pre-merge verification criteria label Oct 1, 2025
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@pablintino: This PR has been marked as verified by testing in Cisco environment with the content of main (4.21).

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/verified by testing in Cisco environment with the content of main (4.21)
/lgtm
Clean cherry-pick that should work independently of the MCO release version.

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@openshift-ci openshift-ci bot added the lgtm Indicates that a PR is ready to be merged. label Oct 1, 2025
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openshift-ci bot commented Oct 1, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: openshift-cherrypick-robot, pablintino

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@openshift-ci openshift-ci bot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Oct 1, 2025
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/jira refresh
/label backport-risk-assessed

@openshift-ci openshift-ci bot added the backport-risk-assessed Indicates a PR to a release branch has been evaluated and considered safe to accept. label Oct 1, 2025
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@cybertron: This pull request references Jira Issue OCPBUGS-62602, which is invalid:

  • release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
  • expected dependent Jira Issue OCPBUGS-60805 to target a version in 4.21.0, but it targets "4.21" instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

In response to this:

/jira refresh
/label backport-risk-assessed

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/jira refresh

@openshift-ci-robot openshift-ci-robot added jira/valid-bug Indicates that a referenced Jira bug is valid for the branch this PR is targeting. and removed jira/invalid-bug Indicates that a referenced Jira bug is invalid for the branch this PR is targeting. labels Oct 1, 2025
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@cybertron: This pull request references Jira Issue OCPBUGS-62602, which is valid. The bug has been moved to the POST state.

7 validation(s) were run on this bug
  • bug is open, matching expected state (open)
  • bug target version (4.20.0) matches configured target version for branch (4.20.0)
  • bug is in the state New, which is one of the valid states (NEW, ASSIGNED, POST)
  • release note text is set and does not match the template
  • dependent bug Jira Issue OCPBUGS-60805 is in the state ON_QA, which is one of the valid states (MODIFIED, ON_QA, VERIFIED)
  • dependent Jira Issue OCPBUGS-60805 targets the "4.21.0" version, which is one of the valid target versions: 4.21.0
  • bug has dependents

Requesting review from QA contact:
/cc @rbbratta

In response to this:

/jira refresh

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@openshift-ci openshift-ci bot requested a review from rbbratta October 1, 2025 16:08
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knobunc commented Oct 1, 2025

/label staff-eng-approved

@openshift-ci openshift-ci bot added the staff-eng-approved Indicates a release branch PR has been approved by a staff engineer (formerly group/pillar lead). label Oct 1, 2025
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openshift-ci bot commented Oct 1, 2025

@openshift-cherrypick-robot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name Commit Details Required Rerun command
ci/prow/e2e-gcp-mco-disruptive 9120a52 link false /test e2e-gcp-mco-disruptive
ci/prow/bootstrap-unit 9120a52 link false /test bootstrap-unit
ci/prow/e2e-azure-ovn-upgrade-out-of-change 9120a52 link false /test e2e-azure-ovn-upgrade-out-of-change
ci/prow/e2e-aws-mco-disruptive 9120a52 link false /test e2e-aws-mco-disruptive
ci/prow/e2e-gcp-op-ocl 9120a52 link false /test e2e-gcp-op-ocl

Full PR test history. Your PR dashboard.

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@openshift-merge-bot openshift-merge-bot bot merged commit d707114 into openshift:release-4.20 Oct 1, 2025
17 of 22 checks passed
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@openshift-cherrypick-robot: Jira Issue Verification Checks: Jira Issue OCPBUGS-62602
✔️ This pull request was pre-merge verified.
✔️ All associated pull requests have merged.
✔️ All associated, merged pull requests were pre-merge verified.

Jira Issue OCPBUGS-62602 has been moved to the MODIFIED state and will move to the VERIFIED state when the change is available in an accepted nightly payload. 🕓

In response to this:

This is an automated cherry-pick of #5274

/assign cybertron

/cherrypick release-4.19 release-4.18

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

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@openshift-cherrypick-robot: new pull request created: #5323

In response to this:

This is an automated cherry-pick of #5274

/assign cybertron

/cherrypick release-4.19 release-4.18

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Fix included in accepted release 4.20.0-0.nightly-2025-10-02-162542

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