A common problem is mismatch neighbor timeout configuration between VPP and the switch. By default, VPP uses 3 seconds timeout. The switch may be using a 90 seconds timeout value. They need to be the same.
Get Outlook for Mac <https://aka.ms/GetOutlookForMac> From: [email protected] <[email protected]> on behalf of Andrey Lobov via lists.fd.io <[email protected]> Date: Thursday, November 27, 2025 at 5:40 AM To: [email protected] <[email protected]> Subject: [vpp-dev] LACP issue Sometime we get the messages on remote switches which claim the interface is no longer active as part of the bundle with the error "(Partner is not Synchronized (Waiting, Standby, or LAG ID mismatch))". Another message comes in a second and states the interface is active again. We wonder what that can mean, because from our side - VPP does not seem to have much logs in regards to LACP. The debug is not appropriate, because that happens not quite often and unpredictable. One switch shows that once in three days, another one - once in ten days. We also do not see any "BPDU lost" like errors and can just confirm zero worker is idle at this time. What else could we check? Thanks for any hints.
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