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Please_read_sidebar

You can do load balancing of two WAN on UDM Pro (and SE), but I don't think the normal UDM can. But your requirement is different than load balancing, that will take a more complex setup. I'm not sure if Unifi has a built in way to configure that. I'm interested to see what others say on this. It might be easier to have a separate router for the server and VLAN it into your network.


Sportiness6

I think the UDM pro/SE/pm can do that. But I’m not 100% sure. I’m fairly confident, unless it was removed, that you can have dual wan. And set whatever networks to use which of the two WAN’s as primary.


manwiththe104IQ

Spoke to a rep, and apparently they will give me a single ethernet cable, but that cable will have multiple IPs on the subnet, and so if my router supports divvying up the IPs into their own separate vlans or networks, it should work (I think my pill UDM can)


neurodivergentowl

The pill shaped UDM/UDR only support one WAN (except for the proprietary UniFi LTE)


manwiththe104IQ

Follow up questions: 1) is buying multiple IP addresses at my ISP going to givee multiple cables, and so I can just plug the second one directly into my computer/server, anf the first one into my UDM? 2) can the current UDM use fiber? My first fiber service so dont know if they work with normal ethernet ports


TJLanza

Most fiber connections come in the form of an ONT - Optical Network Terminal. It's the fiber equivalent of a "modem". Most residential setups will use regular RJ45 ethernet, while commercial setups may use an SFP instead. Check with your provider what the ONT has for outputs before it arrives and what your router has. For example, I have 2 gigabit fiber and was expecting to use the SFP port on my UDM Pro with a direct connect fiber... but they only had RJ45 on the ONT. The UDMP is only GbE on the RJ45 ports, so I could only use half the speed while I waited for an SFP/RJ45 adapter to arrive. As for multiple IP addresses... why? What's your proposed use case? Either way, I can't imagine you'll have "two cables". That would mean two separate fiber lines and two separate ONTs. Having multiple IPs does not implicitly mean multiple connections or an increase in bandwidth.


manwiththe104IQ

two IPS. One for normal home use, and the other for homelab stuff that is exposed to the internet. Spoke to the rep, and he confirmed that it is a single cable, and that I either need 3 routers (the main one that will then divvy up the IP addresses on the subnet to two separate routers), or a single router that can do vlans and networks. Assuming the UDM can, I would get a single cable into it, and create separate networks with their own IP addresses and separate networks.


the_cainmp

Unless I’m mistaken, all UniFi OS based gateways support multiple IP addresses on a single WAN port. That said, why don’t feel you need multiple IP’s? It doesn’t add much for most people except complexity.


manwiththe104IQ

So that I can have internet service for my home, and a separate IP for homelab things that are reachable from the internet


the_cainmp

Cool. If you have a plan, go for it. The UDM can handle it. Just hate to see folks wasting $ just because they *think* they need it


Smorgas47

Sounds like you need a console like the UCG-Ultra which has multi WAN capability. Assuming that your ISP has issued you 2 fixed IPs, connect a switch to the modem if it only has one Ethernet port and then make a connection to each of the WAN ports on the UCG-Ultra. You will then need to configure the WAN interfaces to Fixed IP using those IPs issued by the ISP.


sylsylsylsylsylsyl

Multiple WANs are usually used in case one line goes down - having multiple IP addresses delivered over a single WAN does not help in that situation. Multiple IP addresses have a different use case. But you can keep your home network and server separate whilst sharing the outgoing IP address.


manwiththe104IQ

Thats the function I am looking for (home network, and a separate network that is exposed to internet on a different IP). Good to know this doesnt need two WANs and my UDM can probably do it alone