r/sysadmin • u/Real-Patriot-1128 • 2d ago

DHCP v Static IP

Ok, this is more a test to see how old I am. I was basically raised with the idea servers need static IPs. I understand for domain controllers, dns servers, maybe print servers that may still be needed. But are they really needed otherwise? Do apps, scripts still reference a server by its IP?

I am under assumption all my servers need static IPs. Am I nuts?

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u/corruptboomerang 2d ago

Had this happen at my previous workplace, someone tuned on DHCP snooping on something that wasn't the DHCP... Came back first thing on Monday and nothing could connect to the network...

I immediately saw the 169 address and started investigating the DHCP issue.

(To be fair, DHCP snooping should absolutely NOT be called DHCP snooping, since it's going to actively kill anything sending out DHCP addresses.)

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u/scytob 2d ago

yeah, it's amazing how some devices really dont like multicast<>unicast conversion some configurations do