question

jiangruizhang-3306 avatar image
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jiangruizhang-3306 asked ·

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

  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-2016windows-dhcp-dns
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jiangruizhang-3306 avatar image
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jiangruizhang-3306 answered ·

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

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Glad to hear that your issue has been resolved. Thanks for your sharing!

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SunnyQi-MSFT avatar image
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SunnyQi-MSFT answered ·

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?

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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.

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Best Regards,
Sunny


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Thank you very much for your answer. The reason for the question has been found.

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