I'm a low level tech that is lucky enough to be mentored through real experience. Bear with me, I have a year of experience and most of the networking i've done was internal on one subnet- so basically between switch and clients/servers.
I have a customer that currently has 2 external static IPs, one from ATT and one from Comcast.
It basically looks like this:
ATT router->Cisco router1->Switch1->Clients
Comcast router->Cisco router2->Switch1->Clients
The clients are all static, with sales on one gateway (say comcast side) and production on another gateway (say ATT side)
Internally, these two gateways (cisco router 1 and 2) are in the same subnet. They are overlapped.
The goal is to replace both Cisco routers with a UniFi Security Gateway without changing other network properties beyond that. This would work if I could assign LAN 1 as one gateway and LAN 2 as another gateway on the same subnet, but the UniFi GUI will not allow this. It gives an error due to the second gateway being on the same subnet.
How can I make this work without defining a new subnet for one of the LAN ports and statically setting half the clients to this new subnet???
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