If you want to do it manually, you should review
LARTC... particularly
4.2. Routing for multiple uplinks/providers. If you want something quick that will work, there are
"appliance" distros that achieve this in various forms depending on what you have, what you want, and/or what you need.
"
perfect load balancing"... good luck.
Quote:
Originally Posted by 4.2.2. Load balancing
Note that balancing will not be perfect, as it is route based, and routes are cached. This means that routes to often-used sites will always be over the same provider.
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