Network settings required when creating a redundant virtual database server

When creating a redundant virtual database server, ensure that all subnets registered to the DB subnet group specified when the redundant virtual database server was created meet the following condition:

Condition

• Routing exists from the default gateway of the subnet that reaches the IP address of each subnet for all other subnets that belong to the DB subnet group.

  Example: If subnet1 and subnet2 are registered in the DB subnet group.

  The following must be set:

  • Routing to reach an IP address on subnet2 from the default gateway of subnet1
  • Routing to reach an IP address on subnet1 from the default gateway of subnet2