A large number of bad_adderss results in a full DHCP pool

Question

DHCP service installed on win server 2016, only one DHCP server on the domain, now every day there are 10~20 bad_adderss, looked at DHDP log and L3 arp, found no exception, there is no direction of investigation, I would like to encounter this problem, what a good solution?

Answer 1

It feels like some devices are causing IP conflicts when I turn them on ~ but I can't find any of them.

Answer 2

Hi Jing zhao,

Firstly, you can check the configuration of the DHCP server to ensure that the IP address pool is set correctly and there are no overlapping IP address ranges. Secondly, ensure that the DHCP relay configuration on all network devices (including switches and routers) is correct and does not result in duplicate allocation of IP addresses or interference with DHCP communication. Additionally, check if the client devices have any malicious software or configuration issues that may cause them to send incorrect DHCP requests. Finally, consider updating the log level of the DHCP server to record DHCP requests and responses in more detail, in order to better track issues.

Please let me know if you have any other questions.

Best regards，

Jill Zhou