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300-430 · Question #345

A wireless network uses Cisco ISE to implement 802.1x for user authentication and an Active Directory server as a user database. After a power outage, the wireless clients cannot connect to the wirele

The correct answer is D. Configure NTR.. The "clock skew" error in Cisco ISE occurs when there is a time synchronization mismatch between ISE, the WLC, and Active Directory. To resolve this, NTP must be configured so that all devices use the same time source, ensuring proper certificate validation and successful 802.1X

Monitoring and Troubleshooting

Question

A wireless network uses Cisco ISE to implement 802.1x for user authentication and an Active Directory server as a user database. After a power outage, the wireless clients cannot connect to the wireless network. The ISE log reports a "clock skew". Which action addresses this issue?

Options

  • AInstall a trusted certificate.
  • BEnter the correct credentials.
  • CRestart the ISE service.
  • DConfigure NTR.

How the community answered

(25 responses)
  • A
    8% (2)
  • B
    4% (1)
  • C
    16% (4)
  • D
    72% (18)

Explanation

The "clock skew" error in Cisco ISE occurs when there is a time synchronization mismatch between ISE, the WLC, and Active Directory. To resolve this, NTP must be configured so that all devices use the same time source, ensuring proper certificate validation and successful 802.1X

Topics

#802.1x#Cisco ISE#clock skew#NTP

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