Multiply device with the same IP

nPaceTo · Thu Apr 18, 2024 5:45 pm

Hi,

Is there someone who can help me with the configuration of the RB941? I need to connect 4 devices with the same IP at the same time:

					+- (169.254.8.11/16)---(169.254.8.8/16)[eth2] - Client 1
					|
[PC](169.254.8.1/16) [eth1]	--	+- (169.254.8.12/16)---(169.254.8.8/16)[eth3] - Client 2
					|
					+- (169.254.8.13/16)---(169.254.8.8/16)[eth4] - Client 3

The PC is with static IP : 169.254.8.1 and should be connected to eth1.
to eth2,3 and 4 will be connected 3 clients with the same IP: 169.254.8.8 / netmask 255.255.0.0.
The clients should be accessible via HTTP address (169.254.8.11 for client 1.... etc).

Thank you in advance!

IlKa · Sat Apr 20, 2024 9:25 pm

`169.254.0.0/16` is APIPA. https://en.wikipedia.org/wiki/Link-local_address

You shouldn't use it. So, the correct answer to your question is "Do not do that".

But if you still want to give it a try, create separate VLANs you will have 3 different interfaces each connected to a device, and then configure DNAT to make them available from outside.

Multiply device with the same IP

Multiply device with the same IP

Re: Multiply device with the same IP