DHCP - Reservas de IP - Replicação

Question

Prezados, Tenho o seguinte cenário:

DC01 (primário) e DC02 (secundário) em produção.

Quando eu faço uma reserva de ip na função DHCP em "Reservas" no DC01, ele não replica para o DC02 (nem mesmo esperando 15min ou forçando o gupdate /force).

Ou seja, tudo que eu faço de ajuste na opção de DHCP no DC01, ele não replica para o DC02.

Obs.: tenho o failover de DHCP configurado entre os dois DCs e, até então funcional, se o DC01 cair, o DC02 assume.

Gostaria de entender qual o problema de deplicação dessa questão de reserva de dhcp entre os DCs. Obrigado.

Answer 1

To implement DHCP high availability/failover, follow https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh831385(v=ws.11) Pls note that, in general, it's not recommended to use domain controllers as DHCP servers, so if you have other servers available in your environment, use those instead. However, the AD functionality and DHCP functionality are, for the most part independent (except for the fact that you have to authorize DHCP servers in AD) hth
Marcin

Answer 2

Hello, Thank you for posting in Q&A forum. To further troubleshoot this issue, please kindly try below steps: 1.Check if DHCP failover basic configuration is normal. 2.Check if DC Replication is going well by CMD command: repadmin /showrepl Check the outcome and see if there's any insights Event Viewer Logs: Look into the Event Viewer logs on both DC01 and DC02 for any DHCP-related errors or warnings. This can provide valuable information about why the reservations are not replicating. 3.Run CMD command repadmin /syncall to manually start the replication. Best regards, Hania Lian

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