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ACS 5.5 + Radius Identity stores

Sharin Taib


I have an ACS version 5.5 setup with Radius identity stores.

Currently, my wireless users login to a captive portal that sends EAP_ASCII to my ACS which then sends the credentials over to the individual radius identity stores.

I am attempting to change the login process for my wireless users by sending EAP_PEAP with no 2nd level authentication over to my ACS.

But i keep getting an error as such

22043  Current Identity Store does not support the authentication method; Skipping it.
22056  Subject not found in the applicable identity store(s).

My vendor said that ACS version 5.5 + Radius identity stores does not support EAP_PEAP and will need to re-configure as a LDAP identity store.

I'm unable to find any documentation on this and was wondering if anyone has a setup as such which is working.


4 Replies 4

Jatin Katyal
Cisco Employee
Cisco Employee

Well it's actually opposite. LDAP doesn't support PEAP MSCHAPv2.

What identity store are you referring to?  Can you please go to Access-policies > default network access > identity. Let me know what you see there. If you have a identity sequence store selected there then go to User & identity store > Identity store sequence and edit the one you have selected for wireless authentication. I will be able to tell you why you're seeing this error.

- Jatin


in my identity, i have multiple IETF for multiple authentication. so each will accept ending with ABC, ab or

identity store sequence does not have anything configured.

i have a few external identity stores, some are radius servers, some are LDAP.

Ok then the one you posted initially where you see " identity store does not support the authentication" for PEAP is surely going to LDAP server. Replace LDAP with AD or configure the endpoints to either use EAP-TLS or EAP-GTC instead of PEAP-MSCHAPv2.

- Jatin


yeah that's what i thought. EAP-TLS and EAP-GTC takes awhile for users to configure so was trying to find default mobile setups. thanks anyway!

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