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windows server 2016 The state of the small partner server in the failover is not available

jiangrui zhang 61 Reputation points
2021-03-19T03:33:50.387+00:00
  1. Environment:

Two DHCP servers, the system is windows 2016, have turned off the firewall, the failure transfer has been configured, and the mode is hot standby server mode.

  1. Fault description:

Today, the replication of the fail over scope on the primary DHCP server indicates that the target computer is not running the DHCP server service, and the standby DHCP server is still configured for fail over, and the service is also running, that is, the standby DHCP service is not recognized.

When viewing the relationship of the failover, it is found that the status of the partner server is not available, and the rest is normal.

Thank you for your analysis！

Windows Server 2016
Windows Server 2016
A Microsoft server operating system that supports enterprise-level management updated to data storage.
2,529 questions
Windows DHCP
Windows DHCP
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.DHCP: Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
1,040 questions
0 comments
Accepted answer
  1. Sunny Qi 11,051 Reputation points Microsoft Vendor
    2021-03-19T09:41:08.747+00:00

    Hi,

    Thanks for posting in Q&A platform.

    May I know if the primary DHCP server and standby DHCP server can ping each other successfully?

    Please help to confirm the state of the server is the partner server is not available or lost contact with partner?

    79603-image-2.jpg

    You could check the DHCP server event log in Event viewer of both primary server and standby server to see if there is any event related the issue. And please provide screenshots for further troubleshooting.

    79589-image-1.jpg

    Best Regards,
    Sunny

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  1. jiangrui zhang 61 Reputation points
    2021-03-19T09:52:01.917+00:00

    The problem is found. The TCP 135 port is blocked.thank you.

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