IFDV stands for which metric?

• A. Inter-frame Delay Variation(IFDV)
• B. Frame Delay(FD)
• C. Frame Loss Ratio(FLR)
• D. Availability

Answer: (A)

Inter-frame Delay Variation is the measure of how much the time gaps between consecutive frames vary as they traverse the network. It’s essentially jitter for frame-based traffic: if frames arrive at a steady pace, the variation is low; if the inter-arrival times swing widely, the variation is high. This metric helps gauge the quality of time-sensitive streams like video or real-time media in an SD-WAN, where consistent timing matters for smooth playback. It differs from Frame Delay (the actual one-way latency from source to destination), Frame Loss Ratio (the percentage of frames that are dropped), and Availability (how often the service is up). So the term you’re asking about expands to Inter-frame Delay Variation, capturing the timing variability between frames.