[ale] Routing and failovers

[Alex Carver]

No, bonding wouldn't work in this case because I don't want to share the
bandwidth of the two connections.  I want them to remain independent
using only the DSL link for all traffic unless the DSL link fails and
then a subset of traffic would go to the backup link.  If the DSL link
is working the backup link ideally should never see a single packet.

On 2015-07-09 06:30, Sergio Chaves wrote:
> Wouldn't Network Bonding work for you? Check the active-backup setup.
> http://wiki.centos.org/TipsAndTricks/BondingInterfaces
> 
> 
> On Thu, Jul 9, 2015 at 12:05 AM, Alex Carver <agcarver+ale at acarver.net>
> wrote:
> 
>> 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.