Inter-datacenter failover

Gateways at each datacenter location operate as independent clusters. Traffic from the branch is steered between the primary and secondary datacenter locations using SD-WAN rules. The SD-WAN device at the branch location may detect issues at a datacenter location using its performance SLAs and steer traffic based on its preconfigured SD-WAN rules.

Example of a Lowest Cost SLA rule on the branch to steer between Datacenter1 (HUB1) and Datacenter2 (HUB2):

1. Overlays to Datacenter 1 (HUB1-VPN1 and HUB1-VPN2) are given a lower cost (0).

   

2. The rule will prefer Datacenter , as long as its SLAs are met:

   

   When SLAs are not met or failure is detected, traffic will failover to Datacenter 2.