I'm setting up 2 small data centers in an active/passive failover scenario. I'm using VXLAN to stretch a layer 2 subnet between the 2 locations. I know that the standard practice is to configure the data center gatways at each location to have the same IP address and then block each gateway from responding to arp requests from the other location. I believe you can use mac access lists to do this, but I'm not exactly sure where to place the access list. Should it go under the vlan interface that's configured with the gateway IP in each location? Or, should it go under the nve interface?
Thanks!
