did not work. Linux accepts only one gate.
seems here is windows server better than linux ...
NOTE: A default gateway is a 'default' gateway.
I is nonsense trying to define 2 'defaults'. Instead you should define other routes.
In many words: Dietmar is right, only one default but... iproute2 "docet"
Is there any way to use both - or if not - at least to switch router when first is down?
Sure, but lets go back to the original problem:
Whats the best way to setup such 'redundant' routing? Use different metrics?