ISE behaviour for HA

[jinapark]

Hi guys!

I've gone through with Cisco Live session for ISE scale up and HA, and I've got a question about the example.

According to the session, there's an primary PAN in DC-A, and the secondary PAN in DC-B.

The question is, when the WAN connection goes down, what will be happened in both PAN?

I guess, the secondary PAN will recognized that the primary PAN is unreachable and it could start to work actively.

What about the Primary PAN? will it continue to work? 

[Timothy Abbott · Accepted solution]

Hi,

Depends if you have admin fail-over enabled or not.  If not, The secondary admin node will wait until it can re-establish a connection and then synchronize its database. If you have fail-over enabled, the secondary admin node will be promoted to primary.  You will be able to administer the deployment from the new primary at that point.

Regards,

-Tim