Multiple WAN gateways to utilize all available upload speed

Tmanok

Renowned Member
Hi Everyone, I've asked a similar question on ServerFault recently linked here: https://serverfault.com/q/1077595/408855 but I'm not satisfied with the answers.

I have two LANs that each have a WAN gateway on a separate ISP "modem". My local ISPs do not have Fiber, and only offer 1Gbps download x 125Mbps upload. I have 1.82TiB of CEPH objects (VMs &CTs) to push from my local PBS to a remote PBS at an off-site location.


So the question is: How can I utilize the available upload throughput of two 125Mbps links? My destination off-site location is 300Mbps download (can be increased). Additionally, both of my modems will need to reserve 10-20Mbps of that upload speed to continue offering services...

Some of my thoughts:
  • Add a secondary static IP to each modem (max 4 ports) and use a router running OpenSense to round Robin packets across both links. (PBS would be connected to a private LAN on this router).
  • Use a similar method to the above but with a VPN connecting to another machine on the other side of the connection.
  • Pay for an SD-WAN aggregator
  • Give PBS an interface for both LANs and apply some Linux networking voodoo.

Thanks Everyone!
 
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