[CentOS] Redundant LAN routing possible?
Emmanuel Noobadmin
centos.admin at gmail.comSat Jul 10 21:21:50 UTC 2010
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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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