You are using Co-Term or Per-Device Licensing. The definition is that the devices will literally stop working, that is, your network will become inoperable. I have seen some cases where with Per-Device Licensing, even after the grace period expired, it continued to work, but let's face it, even if it is a bug, I believe that you should have the good sense to renew the licenses, right? I think it is a question of trust.
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