Configuration restrictions and guidelines
A centralized VXLAN IP gateway group is exclusive with the VSI flood confining feature in some conditions. When you use the features together, follow these restrictions and guidelines:
A gateway group can work correctly only when flooding is enabled for VSIs or when both unknown unicast and unknown multicast floods are suppressed.
As a best practice, finish gateway group configuration before you configure VSI flood confining. The system will display prompts when the VSI flood confining setting conflicts with the gateway group configuration.
To ensure correct traffic forwarding, do not configure multicast mode or flood proxy mode for a VXLAN that uses a centralized VXLAN IP gateway group. For more information about multicast mode and flood proxy mode, see "Flood."