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Unplugged NICs Getting 169 Address

Tags: Windows

I have 4 new HP DL360 G10 servers. I have physical NIC 1 plugged in with a static address. NICs 2-4 are unplugged. If I open a command prompt and run ipconfig, 2-4 show disconnected. If I open Server Manager and look under All Servers, I see the assigned address followed by three 169 addresses. I am 100% sure these NICs are not connected. I bought several of the same model server last year, and they don’t have addresses for the unplugged NICs. We are seeing some network flakiness with these servers, and I’m guessing it’s related to the 169 addresses on 3 NICs. Any ideas?

Topic

Sounds correct for default install of say, Windows.

In reply to Unplugged NICs Getting 169 Address

Let’s read https://docs.microsoft.com/en-us/windows-server/troubleshoot/how-to-use-automatic-tcpip-addressing-without-a-dh so all know how to control this.

Re: 169 addresses

In reply to Unplugged NICs Getting 169 Address

If you feel unhappy with it, disable those unused unused NIC’s in Device manager or physically disconnect them and you’ll be happy again.

I don’t expect it will have any influence on the flakiness of the the servers, but if ti does you’re still happier and if it doesn’t you know this is not the cause so you can start searching for the real cause.

[Author]

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