Please help me understand how the Cisco switches would connect to ECS.
For example, do you need to connect Cisco switches to the ECS top-of-rack Arista or Dell switches?
Any Cisco switch meeting the following requirements is compatible with ECS.
For example, any 10Gbe switch from the Nexus 3000 series will fit these requirements. For reference, the Nexus 3524/3534-X would be the closest fit to the existing Arista switches.