I have setup a multisite ACI with 2 DCs managed by NDO and migrated legacy DC workloads to the Fabric. I have around 53 EPGs with their BDs and VRFs. I have assigned a subnet to every EPG. I have 2 x L2outs to the legacy catalyst 9k VSS chassis with SVI interfaces for the BD subnets. I need to migrate all L2Out to just one L3Out per DC which will use BGP to external Routers for routing Distibution to and from external network.
Can someone suggest a best practices to minimise downtime. if there is a step by step guide please point me to that as well.
Regards
