Fallback Scenarios

There are several fallback scenarios which can be used.

• HA Scenario

  In the HA scenario there is a fallback for every load balancer.

• Active-Active Scenario

  In this scenario the load balancers are fallback for each other.

• 2 Active, 1 Fallback

  In this scenario you have two active load balancers and one fallback for both.

In every case the network numbers are more important than the order.

Example 1:

In this scenario Y takes over if X fails, because network A is not assigned to another instance. Z works as passive standby. If X and Y fail, Z takes over.

Instance	Order	Network
Instance X	1	A
Instance Y	2	B
Instance Z	3

Example 2:

In this scenario Z is fallback for X and Y because both networks are also assigned to Z.

Instance	Order	Network
Instance X	1	A
Instance Y	2	B
Instance Z	3	A, B