Not depending on one link.
WHY IT MATTERS
Every connection fails, and the question is only what happens then.
WHAT REDUNDANCY MEANS
A second connection that takes over.
WHAT MAKES IT EFFECTIVE
Different technology Different provider Different physical route
WHY ALL THREE
A single cut, a single provider fault or a single technology outage should not remove both.
WHAT COMMON COMBINATIONS LOOK LIKE
Fibre primary, mobile data backup Fibre primary, satellite backup Fixed wireless primary, mobile backup
WHAT EQUIPMENT ENABLES IT
A router supporting more than one connection, with automatic failover.
WHAT TO CONFIGURE
Which connection is primary What triggers a switch Whether it switches back automatically
WHAT TO BE CAREFUL WITH
Failing over to a capped connection and consuming the allowance unnoticed.
WHAT TO DO ABOUT IT
Alerting when failover occurs.
WHY ALERTING MATTERS
Silent failover means you discover it on the bill.
WHAT ELSE TO CONSIDER
Load sharing, using both connections simultaneously.
WHAT THAT PROVIDES
More capacity, and immediate continuity.
WHAT IT COMPLICATES
Anything requiring a consistent address.
WHAT TO TEST
Failover, by disconnecting the primary.
HOW OFTEN
Periodically, and after any change.
WHAT TO VERIFY IN TESTING
That it switches, that work continues, and that it returns.
