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Cisco ISE Admin and EAP certificate renewal

Johannes Luther
Level 4
Level 4

Hi board,

maybe I'm asking a rather dumb question here, but anyway :)

I'm currently thinking about how to renew an admin/EAP certificate on an ISE node and the effect on the endpoint authentication.

 

Here's the thing I do, when I initially install an ISE node

1.) CSR creation on ISE (PAN) - CN=$FQDN$ and SAN="fqdn as well"

2.) Sign CSR and bind certificate on ISE node - done

 

Now after 10 month or so (if the certificate is valid for one year) I want to renew the ISE admin/EAP certificate.

CSR creation: I cannot use the $FQDN$ as the CN, because there is still the current certificate (CN must be unique in the store, right?)

 

So what to do now? Do I really need to create a temporary SSC and make it the admin/EAP certificate, delete the current certificate and then create a new CSR? There must be a better and more important non-disruptive way of doing this.

 

How do you guys do this in your deployments?

 

Thanks in advance and sorry again if this is a silly question.

 

Johannes

 

 

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