ACS and ISE

[yohh]

If ACS and ISE are being used in a single domain,

in this case, when the ISE goes down, can ACS take over the authentication of TACACS?

Thank you.

[Jason Kunst · Accepted solution]

This has nothing to do with the authentication servers have to do with the network access device capabilities to support fail over to another server

Yes this is possible please look at the specific network access device configuration details for more information

[kthiruve]

Hi Yale,

SInce these two are different servers with different db, is the a reason why you want to do that.

Are you migrating from ACS to ISE?

-Krishnan

[yohh]

Hey Krishnan,

The customer is migrating a couple of his ACS servers to ISE, but keeping some ACS.

Since he will have a mixed environment now (ACS and ISE) he was wondering if he can use ACS as a backup for the ISE servers.