alternative failover for our leased line

[[OUPA]MrNutz]

so our .co.za domain (locally hosted) - (exchange/isa2004) utilizes a saix leased line 196.25.x.x

currently its is a big problem if the copper goes down ...

we have adsl and 3g as connectivity devices (router and stick) but am not sure how to implement this

our setup is like this <domain controller><exchange><isa2004><cisco2600>

any ideas....i've got adsl and 3g as "backup devices...

 

[Roman4604]

any ideas....i've got adsl and 3g as "backup devices...

All depends what you're trying to achieve with failover.

If its merely to allow new outbound connections (e.g. browsing) to be started, then not too difficult, however if you wish your whole enironment (static IP range) to failover in a bi-directional manner, it will get quite tricky.

 

[TheGuy]

so our .co.za domain (locally hosted) - (exchange/isa2004) utilizes a saix leased line 196.25.x.x

currently its is a big problem if the copper goes down ...

we have adsl and 3g as connectivity devices (router and stick) but am not sure how to implement this

our setup is like this <domain controller><exchange><isa2004><cisco2600>

any ideas....i've got adsl and 3g as "backup devices...

Rather get your mail spooled in a data center so if your lines go down email don't start bouncing back. Then if lines do go down you just ask the provider to point the spooling server to a dyndns name that you setup on the 3G router. Should take no longer then 5 minutes to make the change.

O and to Spool our email only costs R500 a month.

 

[alchamy]

If you have a spare box lying around you could use pfsense to failover inbound and outbound connections, you would need to add MX records though. I would go the smarthost route as mentioned but if you want to DIY something have a look at this page on load balancing in pfsense