KPIs that Matter: How Aviz Service Node (ASN) Measures Latency, Bandwidth & More
From data centers to telco and edge, ASN turns packet flows into precise KPIs—latency, bandwidth, retransmits, and per-session stats—for real-time, vendor-agnostic observability.
Introduction
In today’s networks, latency and bandwidth directly shape application performance—impacting video, gaming, collaboration, cloud access, and more. Aviz Service Node (ASN) computes high-fidelity KPIs across telco, data center, edge, FTTH, and campus environments, delivering the visibility teams need to optimize user experience and reliability.
Supported KPIs
- Session-Based Packet Stats — Per session and per direction (uplink/downlink): total packets and total bytes processed by ASN.
- Latency — Round-trip time from UE to DN and back with nanosecond-level precision. Influenced by congestion, distance, processing, queuing, and transmission delays; critical for real-time apps like VoIP, video, and gaming.
- Bandwidth — Maximum data transfer rate measured in bytes per second (B/s). Higher bandwidth reduces buffering and speeds high-demand workloads; affected by infrastructure capacity, congestion, and protocol overheads.
- Timestamps — ASN can compute using existing network timestamps if present, or inject nanosecond-accurate timestamps to enable precise interval KPIs.
KPI Calculation
ASN calculates average bandwidth and latency on 5-second windows and exports events to a Kafka topic. If a session closes before a window completes, ASN immediately publishes the partial results to a priority Kafka topic—preserving accuracy and timeliness.
- Bandwidth is computed per second and averaged over each 5-second window.
- Early termination triggers an immediate export with the actual (shorter) interval’s bandwidth.
- All KPI events are timestamped for precise time-series analysis and correlation.
This design ensures real-time monitoring, rapid anomaly detection, and dependable dashboards—without waiting for fixed collection cycles.
KPIs Support Matrix
| KPIs | Per Session | Per Application | Per Region |
|---|---|---|---|
| Throughput / Bandwidth | ✔ | ✔ | ✔ |
| Uplink Latency | ✔ | ✔ | ✔ |
| Downlink Latency | ✔ | ✔ | ✔ |
| Retransmit Count | ✔ | ✔ | ✔ |
| Total Packets & Bytes | ✔ | ✔ | ✔ |
Key Benefits of Optimizing Latency & Bandwidth
- Enhanced User Experience — Lower latency smooths interactions; sufficient bandwidth prevents buffering.
- Better Real-Time Communications — Critical for VoIP, gaming, and low-jitter financial flows.
- Faster Cloud Access — Right-sized bandwidth keeps storage and compute responsive.
- Scalability & Reliability — Low-latency, high-throughput fabrics absorb growth gracefully.
- Productivity — Fewer slowdowns and incidents mean more time on mission-critical work.
Conclusion
KPIs are foundational to network quality. With ASN’s precise, real-time observability—spanning sessions, applications, and regions—operators can cut delay, raise throughput, and harden reliability across next-gen networks.
