Check the Port Security Configuration Commands of your switch.
User as reference, but check your model:
Some switches keep the mac table static after their learn the MAC so when the vm is migrated that table is not updated (by the security config) and thats why the vm doesnt work.
I had this issue but with other switches and was related to this. (Cannot be certain if this is exactly your problem but at least is worth looking into)
Hope that helps,
NTriple VCIX (CMA-NV-DCV) | vExpert | MCSE | CCNA
Thank you for your reply。
I checked the notify switches setting, it's YES。
Will it not work?