I mean, I know Linux can do this but what hardware do I need? I'm interested in the round robin mode (mode 0 I think?)

I've read conflicting articles on getting this working. After issuing all the commands on both systems to bond their NICs....

... one article said you could use any switch and another stating you had to use a Layer 4 switch.

... and another article said this will only work if the PCs are directly connected to each other.

Both of these computers are on my LAN and I need to transfer about 30+ TB of data from one system to the other and I have to use the network. Going at 1Gbps is gonna take a while. If I could do this at 2Gbps, cut my time in half.

This isn't going to be a common occurrence so I'd rather not buy 2.5Gbps cards and switches.

What say you all?

For binding to provide throughput advantage ALL devices in the path must allow the same kind of binding definition and the desired volume of traffic.
This is why it is easiest with a direct connection between the computers involved, there is no middle device or set of devices to complicate things.
If your switch can accept the same binding as both endpoints then you should get some value out of the binding: otherwise probably not.

I have used something like this for full HA cluster, using nodes that had at least 6 NIC Ether ports each. It was a bit of a pain to set up, a greater pain to administrate and troubleshoot, but worked well for the project: (while it worked at all).

I concur.
Very common in datacentres.
To do this, the network switch and the host must both support something like 802.3ad

The host and switch for example:
https://www.uni-koeln.de/~pbogusze/p..._iproute2.html

Next would be the network switches uplinks.
If they support SFPs, you could use a couple of 10G interfaces from host to network switch.
And same again between all network switches.
Here is a link to someone that played with this:
https://delightlylinux.wordpress.com...net-and-linux/

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