I have a pair of ISE appliances running 126.96.36.199 code.
I have the 2 nodes setup as primary and secondary and they were synced OK.
There was a DNS issue in the network and the ISE nodes were not able to resolve the hostname of the other node so the link between the 2 dropped.
The DNS issue was resolved but the connection stayed down and there doesn't seem to be anyway to re-initiate the connection.
My solution was to de-register the secondary node and then register it again. However, although the de-registration seemed to go OK, the secondary node never came back up in standlaone mode so I was unable to register it on the primary again.
The only solution seemed to be to re-image the appliance.
This seems a very drastic solution for a simple issue such as DNS failing.
Does anyone have any useful comments on this issue?
Under the deployment tab you should see a button called "Syncup." You should be able to select the node that is out of sync and re-sync it. Deregistering and registering the node again should also do the trick. What error are you getting when trying to register it?
That is interesting. Unfortunately, we can't troubleshoot it anymore since you already re-imaged the node and fixed your issue :) Thank you for taking the time to provide feedback and good job on resolving your issue (+5 from me).
If your issue is resolved you should probably mark the thread as answered :)
Login to the FXOS chassis manager.
Direct your browser to https://hostname/, and log-in using the user-name and password.
Go to Help > About and check the current version:
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