What happen if connect a second DHCP server with DHCP Server Guard enabled in network?
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Zyxel_Adam
Posts: 429 
Freshman Member
Freshman Member
After activating the DHCP Server Guard and there is an existing DHCP server in your network, an unauthorized DHCP server tries to connect, the switch will block its DHCP packets. This happens because the switch is programmed to recognize the first DHCP server that sends a DHCP packet to the switch as a preferred server.
If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a ticket directly to reach us.
Adam
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