In the Software-Only SDN solution traffic traverses multiple edge services gateways resulting in added latency and potential performance bottlenecks.
Cisco ACI does not have these limitations.
Cisco ACI provides highly available networks with minimal to no outages, adequate for real-time and latency-sensitive applications.
With the Software-Only SDN solution, gateway failures may result in outages ranging from several seconds to minutes.
The Software-Only SDN solution does not provide lateral security (east-west) for workloads that reside on physical servers and containers.
In addition to supporting a Whitelist Policy model, Cisco ACI supports and protects heterogeneous workloads; i.e., physical servers (bare-metal), virtual machines, and containers across multiple data centers using microsegmentation.
The Software-Only SDN solution can only automate the overlay network and NOT the underlying physical fabric creating complex operational and management models, inadequate for DevOps and infrastructure as code (IaC).
Cisco ACI is an integrated network solution that automates both the physical (underlay) and overlay network without requiring additional virtual resources, while providing intent-based APIs that are friendly for DevOps environments.