Flexibility and performance enhancements
- Version 18.0 delivered a data plane with a Virtual FastPath (VFP) to allow the offloading of trusted and previously security-verified traffic, using the same x86 CPU for the offloaded traffic. On the XGS Series, after inspecting the initial packets in a flow, the x86 CPU offloads trusted traffic to the Xstream FastPath, which runs on the Xstream Flow Processor and is specifically designed for FastPath operations.
- The Xstream Flow Processor delivers and retrieves packets directly to and from the DPI engine's main memory. These enhancements deliver a significant increase in the overall network performance with a 5x improvement in latency with the zero-copy operation and up to a 5x increase in SSL/TLS decryption performance versus the previous hardware models.
- The Xstream architecture saves cycles of the x86 clock by lowering memory bandwidth usage and allowing both processors to update the cache.
- Port density and diversity: XGS Series appliances offer an increased number of fixed ports and include some new port connectivity, such as Power over Ethernet (PoE), which is now built-in on some desktop models. They also offer a broad range of Flexi Port modules and add-on options to adapt and extend connectivity.