NSE4 · Question #391
Which of the following traffic shaping functions can be offloaded to a NP processor? (Choose two.)
The correct answer is C. Differentiated services field rewriting D. Guarantee bandwidth. FortiGate NP processors can offload specific traffic shaping functions, particularly the rewriting of Differentiated Services (DSCP) fields for QoS marking and guaranteeing minimum bandwidth allocations.
Question
Which of the following traffic shaping functions can be offloaded to a NP processor? (Choose two.)
Options
- AQue prioritization
- BTraffic cap (bandwidth limit)
- CDifferentiated services field rewriting
- DGuarantee bandwidth
How the community answered
(46 responses)- A2% (1)
- B7% (3)
- C91% (42)
Why each option
FortiGate NP processors can offload specific traffic shaping functions, particularly the rewriting of Differentiated Services (DSCP) fields for QoS marking and guaranteeing minimum bandwidth allocations.
Queue prioritization often involves complex software logic for dynamic queue management and scheduling that is typically handled by the main CPU rather than being fully offloaded to NP processors.
Implementing strict traffic caps or bandwidth limits typically requires more sophisticated software-based policing and shaping mechanisms, which are generally processed by the main CPU rather than being fully offloaded to NP processors.
Differentiated Services Field (DSCP) rewriting for QoS marking is a packet-level operation that NP processors are highly optimized to perform in hardware, accelerating traffic classification and prioritization.
Guaranteeing bandwidth, which involves ensuring a minimum bandwidth allocation to specific traffic, can be efficiently offloaded to NP processors to ensure consistent performance for critical applications.
Concept tested: FortiGate NP processor traffic shaping offload
Source: https://docs.fortinet.com/document/fortigate/7.4.0/hardware-acceleration/588820/np-processors-overview
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