An administrator is configuring RADIUS on a Cisco switch with a key set to Cisc407294634 but is receiving the error `Authentication failed: 22040 Wrong password or invalid shared secret.` What must be done to address this issue?
A.
Add the network device as a NAD inside Cisco ISE using the existing key.
B.
Configure the key on the Cisco ISE instead of the Cisco switch.
C.
Validate that the key is correct on both the Cisco switch as well as Cisco ISE.
D.
Use a key that is between eight and ten characters.
Correct answer is A. It is designed so that even if you have the key, you can't just point any old device at Cisco ISE and expect it to Authenticate. Cisco ISE also has to define the NAD. https://www.grandmetric.com/knowledge-base/design_and_configure/cisco-ise-3-0-nad/
The correct answer is Validate that the key is correct on both the Cisco switch as well as Cisco ISE-Подтвердите правильность ключа как на коммутаторе Cisco, так и на Cisco ISE.
The error message Authentication failed: 22040 Wrong password or invalid shared secret. indicates that the RADIUS server is not able to authenticate the user because the shared secret is not correct. The shared secret is a string of characters that is used to encrypt the communication between the RADIUS client and the RADIUS server. It is important to make sure that the shared secret is the same on both the client and the server.
As per Cisco support:
Possible Causes is the user or device may not be supplying the correct credentials or RADIUS key to match with the external authentication source.
Please verify that the user credentials that are entered on the client machine are correct, and verify that the RADIUS server shared secret is correctly configured in both the NAD and Cisco ISE (they should be the same).
I believe the correct answer is : C for sure .. see reference
https://www.cisco.com/en/US/docs/security/ise/1.0/user_guide/ise10_troubleshooting.html#wp1049390
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