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Is it a good habit to use a ip helper address on Cisco, or any similar ip helper, when the DHCP is on the same subnet as the client/server.

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    No - what purpose would it serve? – Dan Feb 22 '18 at 9:24
  • That's exactly what I'm wondering. I've got some old documentation from a previous sysadmin, and he recommend using ip helper-address on the cisco switch, but I highly doubt there is a point to do so, especially when the device is on the same subnet. – Tolsadus Feb 22 '18 at 9:26
  • If you mean that the DHCP clients are on the same physical network segment then no, I don't see any value in configuring a DHCP relay agent on your router. – joeqwerty Feb 22 '18 at 12:23
  • Makes sense. Maybe you should add this as an answer ? I just wanted to have confirmation to be sure. Doesn't seem anyone asked before that here. – Tolsadus Feb 22 '18 at 12:25
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No. When DHCP server and client are on the same segment a helper/DHCP relay serves no purpose.

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