Through this video, I'll show you how to regenerate the self-signed certificates on CUCM, IM&P and CUC, as they all use the same procedure, I'm doing this on an 11.0 release.
Currently I have 3 clusters and they have a certificate for cup-xmpp. My question is, if I add a new cluster and I want to add this new cluster in the interclustering settings, do I need to recreate a cert for the 3 current cluster ?.
I don't understand your question, if you're installing a new cluster, it will come with self-signed certs already. This is if you have an old cluster and the validity period of the self-signed certs is about to expire, or they have expired already.
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