Need your assistance to configure the existence of same VLAN's 900 in 3 different environments eg PROD, NONPROD and MGMT, VLAN 900 exists in all 3 (Its is a brownfield and currently does exists), Now Cisco ACI is introduced (Greenfield) in this environment for Configuring VLAN 900 of PROD is not an issue, the concern here is the other environments NONPROD and MGMT once configured in the ACI wont it cause overlapping of IP's and Subnets including the VLAN?? cannot change as the GW resides in PA FW with Specific Static Routes.
So please help me to understand better, i know the external VLAN info hold no relevance in ACI as VxLAN takes over, also for overlapping there is VNI which will be added for segregation, so how do i migrate?? Can you help with the CLI commands, Also configuring all the environments on separate Leaf switches may isolate the problem?? Changing the existing configuration is not an option.