[ale] Routing and failovers

Alex Carver agcarver+ale at acarver.net
Thu Jul 9 00:05:31 EDT 2015


Anyone have experience setting up dual WANs for failover (my guess is
there's a couple of you or I wouldn't really email the list ;) ).

I'm thinking about putting in a cellular modem at home to act as a
secondary/backup WAN link for critical functions (alert emails, security
system access) in case the primary WAN (DSL) drops.  I don't want
traffic going over that link unless the DSL is dead so this is a true
failover rather than a load balance (or I suppose it's a load balance
with a ratio of infinity weighted towards the DSL)

My first thought was to use something like a Ubiquiti EdgeRouter Lite
(maybe need to go to the EdgeRouter 8, not sure) with two WANs
configured and then the NAT and public assignments behind the third
port.  It appears EdgeOS can do two WANs but it's not clear from what
I've been able to dig up so I wanted to find out if there are
other/better options or suggestions.


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