Causes for Cisco UCS Manager and Cisco UCS Central Registration Failure
Question
While you attempt to register Cisco UCS Manager domains with Cisco UCS Central, you find that it is failing.
Which three options are possible causes for the failure between the Cisco UCS Manager domain and Cisco UCS Central? (Choose three.)
Answers
Explanations
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A. B. C. D. E. F.BEF.
https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-central/deployment-guide/1-0/b_UCSC_Deployment_Guide_10/The registration process between a Cisco UCS Manager domain and Cisco UCS Central involves the exchange of various information such as domain ID, certificates, shared secret, and policies. If there is any issue in this exchange of information, it can result in the failure of registration. The following are the possible causes for the failure between the Cisco UCS Manager domain and Cisco UCS Central:
A. TCP packet loss: This is a possible cause when there is a network connectivity issue between the Cisco UCS Manager domain and Cisco UCS Central. If there is a high rate of packet loss, it can affect the registration process.
B. Using the IP address of the Cisco UCS Manager domain instead of the FQDN: During the registration process, the Cisco UCS Central needs to resolve the FQDN of the Cisco UCS Manager domain. If the IP address is used instead of the FQDN, it can cause a registration failure.
C. Version mismatch: The Cisco UCS Central and Cisco UCS Manager domain should be running compatible versions. If there is a version mismatch, it can cause registration failure.
D. Incorrect default policy configured in Cisco UCS Central: During the registration process, the Cisco UCS Central applies the default policies to the Cisco UCS Manager domain. If there is an issue with the default policies, it can cause a registration failure.
E. Incorrect shared secret: The Cisco UCS Manager domain and Cisco UCS Central need to share a secret key during the registration process. If the shared secret is incorrect or mismatched, it can cause a registration failure.
F. Date and time mismatch: The date and time on the Cisco UCS Manager domain and Cisco UCS Central should be synchronized. If there is a mismatch in the date and time, it can cause registration failure.
In conclusion, there can be various reasons for the failure of registration between a Cisco UCS Manager domain and Cisco UCS Central, and the above mentioned three causes (A, B, and C) could be the possible ones. To resolve the issue, you need to troubleshoot each of the possible causes and rectify the issues accordingly.
