Chapter 1 What’s New for FortiOS 5.0 : New features in FortiOS 5.0 Patch 3 : GTP-u acceleration on FortiGate units with SP3 processors
  
GTP-u acceleration on FortiGate units with SP3 processors
FortiGate units with SP3 processors can offload GTP-u packet processing to their SP3 processor. The SP3 processor supports:
GTP-u sanity packet check
GTP-u rate limiting per gtp profile
Encapsulated IP traffic filtering