Mab authentication in domain Unknown after network device reboot

[SMD28316]

After a network device gets reloaded, I see that the endpoints not getting to the proper domain (voice or data) but they get placed in the unknown VLAN instead.

I can resolve this by manually doing a shut no sh to the interface, could the issue be related to stale sessions on the switch? Shouldn't they be cleared once rebooted?

[Damien Miller]

Can you share the switch platform and software version you're running? It sounds like a bug I have seen. 

[SMD28316]

I am having this issue with C9300, OS 17.6.2 , and 17.3.4

[balaji.bandi]

Not sure is this your case - I may have encountered this past, is the configuration on the switch intact ? or was any config lost when it was rebooted?

Can you post the below output :

show auth sess

show auth sess interface x/x  detailed

or this could be a bug as @Damien Miller mentioned..