Hi all, I'm currrently using route domain 0 for everything on the Big-IP. I've not created any other route domains. When I go to Network > Routes, there are no routes listed. Do I need to create a default route for route domain 0? What does route domain 0 use as its default route if I don't specify one?

Hello, If you can reach the F5 or the F5 can reach all required resources without any default gateway, it's fine, no need to add a route. Otherwise, you will need to add a default route on Network >> Route or using a tmsh command : create /net route 0.0.0.0/0 gw 30.99.99.254 No need to take care of the route domain. If you don't specify any route domain in the route configuration it's a route used within route domain 0.

I am able to reach everything that I need to from the F5, but how do I know which interface it's communicating on? I want to be sure it's not relying on my management IP address.

For management access, I believe there is a default route set, but that is for management traffic. (tmsh list sys management-route) outgoing: If there is an interface connected, where the network matches the destination, the device will use that interface. (tmsh show net route) incoming/replies For replies, the device will use: Auto Last Hop. The device will send the reply to the MAC address on the interface where it received the request. I hope I could help!

Do I need a "Route" configured for route domain 0?

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