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TCP Window Scaling Calculator. Required window scale factor. The result stays on this page.

TCP Throughput with Loss Calculator. Mathis formula throughput estimate. The result stays on this page.

Serialization Delay Calculator. Delay to put a frame on the wire. The result stays on this page.

Jitter from a series of latency samples. The result stays on this page.

WAN Bandwidth Planner. Plan per-site WAN bandwidth. The result stays on this page.

Goodput Calculator. Application throughput after overhead. The result stays on this page.

Burst and rate behaviour of token bucket. The result stays on this page.

MTBF/MTTR Calculator. Availability from MTBF and MTTR. The result stays on this page.

Speed Test Result Interpreter. Explain what speed test numbers mean. The result stays on this page.

OTDR Event Explainer. Explain OTDR trace events and values. The result stays on this page.

Channel, frequency and wavelength on ITU grid. The result stays on this page.

CWDM Wavelength Reference. CWDM channel wavelengths. The result stays on this page.

25-Pair Color Code Reference. Telecom 25-pair colour code. The result stays on this page.

Cable Run Length Estimator. Estimate cable length for runs. The result stays on this page.

Rack Elevation Builder. Drag-and-drop rack elevation diagram. The result stays on this page.

PDU Load Calculator. Per-phase PDU load balancing. The result stays on this page.

Cooling Requirement Calculator. Cooling tonnage for a server room. The result stays on this page.

PUE Calculator. Data centre power usage effectiveness. The result stays on this page.

Plan 40G/100G/400G breakout connections. The result stays on this page.

Propagation speed/velocity factor by medium. The result stays on this page.

Find redundant and shadowed ACL entries. The result stays on this page.

Find unused, duplicate and overly broad rules. The result stays on this page.

Firewall Policy Diff. Compare two firewall policies. The result stays on this page.

Generate OpenVPN server/client configs. The result stays on this page.