Unable to Join ISE Secondary to Primary Server... Need Help !!!!

[sai.naga1]

We had a working ISE 2.1 Patch 3 deployment of two nodes. The secondary node was showing some issues, hence we rebuilt the secondry server once again. The new secondary runs the same software version and patch level. Forward / Reverse DNS entries for both nodes exist. The Same CA which is a part of the primary was exported to secoundry server.
We have an issue with Node Registration, The error message we are getting is user name and password are incorrect.
Kindly help us in this regards.

This is a critical issue, help is needed ASAP.

Thank you in advance.

[Mohammed al Baqari]

Make sure that the certificate chain of primary is imported in secondary
trusted store and the certificate chain of the secondary is imported in
primary trusted store

[sai.naga1]

During the initial Implementation of the ISE Server, new certificate has been imported from primary to secondary and secondary to primary. After some days, We did a re-image of the secondary server and re-configured it.
The Same certificate which was used during implementation was imported to secondary once again. Will the Importing of the old certificate, result in this issue ?

[Mohammed al Baqari]

Yes, you need to import the current use cert

[Arne Bier]

the username is: admin and the password is the password you use for the web GUI (not the CLI password)

[sai.naga1]

We have integrated the ISE Server with Active Directory,... We are using an account which is a part of the super admin group in ise primary server.
This would make the normal admin as a super admin.

[sai.naga1]

Folks... Help us

[Arne Bier]

Can you log into the new ISE node's web GUI using the Internal admin user?  If yes, then use that admin and its password when registering that node on the Primary PAN.

What errors are you getting. Put some screen shots on this forum to help people help you.

Have you checked that DNS resolution is working on all nodes concerned?

Did you install the same server certificate that you used on the old server?  Did you assign Admin role when importing that cert?  Can you see that that cert is used when browsing to the Admin GUI?