Cisco 801 – Authentication failed for client (Unknown MAC) on Interface Fa0

        I have a little big problem here:
  • I received a Cisco 801 last month.
  • I wanted to set up a static IP in one interface.
  • So, I connected to the router console an found a login prompt.
  • Given that I didn't know a valid user:password I tried to reset the password following this tutorial https://www.youtube.com/watch?v=MpgZDi32NaU
  • (I never configure a Cisco router by the way)
Basically, I follow all tutorial steps and set:
(config) enable secret <my-secret-password>
Then, restart the router and the following errors appears:
000039: *Aug 10 20:59:10.227 PDT: %DOT1X-5-FAIL: Authentication failed for client (Unknown MAC) on Interface Fa0 AuditSessionID 0A010101000000000000C0C0
000040: *Aug 10 20:59:10.227 PDT: %AUTHMGR-7-RESULT: Authentication result 'no-response' from 'dot1x' for client (Unknown MAC) on Interface Fa0 AuditSes0
000041: *Aug 10 20:59:10.227 PDT: %AUTHMGR-7-FAILOVER: Failing over from 'dot1x' for client (Unknown MAC) on Interface Fa0 AuditSessionID 0A0101010000000
I don't understand why changing the superuser password with enable secret results in a failure on interface Fa0. Now, I need to revert this mess, any ideas? Thanks in advance.

Leave Your Comment

Leave a Reply