I've been reading that it's possible to set up a system with multiple
NIC to provide redundant internet connectivity such that it will
switch to a secondary connection if the primary ISP fails.
Is it possible in a similar way to setup redundant LAN routing? I read
that it is possible to aggregate/bond multiple NIC to stackable
switches that support link aggregation and redundancy. But if only
simple switches are available, is something like this possible?
e.g.
System A
eth0 -> lan switch/router 1
eth1 -> lan switch/router 2
System B
eth0 -> lan switch 1
eth1 -> lan switch 2
Then somehow specify that, if lan switch 1 fails, the two systems will
switch to using switch 2 so that in case of a switch failure, the
network continues to remain operational.
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