vRGW supports stateless inter-chassis redundancy, where the home and device state is not explicitly synchronized between the two vRGWs. After a redundancy switchover event, Data Triggered Authentication (DTA) is used to download the correct home and device state back from the controller. The controller should always have the latest configuration state of a specific home, including any overrides after the home was activated. Additionally, the controller maintains a minimal state for DHCP pool management that can be reflected to the vRGW in case of a redundancy event, as shown in Figure: Inter-chassis redundancy.
Figure: Inter-chassis redundancy
