PacketCalc

A Calculator for Packets

“Ridding the world of uncalculated packets, one engineer at a time.”

PacketCalc answers questions like:

• What size payload does a 128 byte ethernet frame carry?

• My work VPN allows only 512 byte packets. How long will it take to upload a 5GB file over IPv4 + TCP (assuming a good connection)?

• Our new data center deployed a 100Gb/s IPv6 fabric with top of rack switch support for VXLAN (IPv6 VTEPs). Our fabric MTU is 9216 bytes, but BULK class of service is throttled to 70%. What's the maximum throughout we can achieve in BULK tagged IPv4 UDP packets sent over this fabric?

Features

• VXLAN, 802.1Q, IPv4, IPv6, TCP, UDP, plus custom protocols
• Custom Payload allows for simulation of traffic generator signatures
• All RFC2544 frame sizes, plus common Jumbo and Wifi sizes
• Frame Duration
• Percent Throughput, Overhead, Load, Duration
• Adjustable IFG, including easy selection of Standard and IEEE MIN (based on media speed)
• Adjustable MTU or Lock MTU to Size
• Percent Load adjustments in 1000ths of a percent of line rate
• Media Speed adjustments include all popular ethernet speeds
• Frame Rate in Frames per Second
• Export all internal values to Text, Soulver, and JSON using the standard iOS Share Sheet
• Tap any value in the UI for inline help on that item
• Double-tap a Tile to copy its value to the Clipboard
• Long-press a Tile to export its value as JSON, Soulver, or Raw
• Help Tab includes more extensive help
• iOS Dark and Light mode
• iPad Multi-Window (single instance)
• iPad SplitView and SlideOver
• iPad version runs natively on Apple Silicon Macs
• Keyboard shortcuts on iPad/Mac for easier navigation
• Honors iOS System Font Size
• Dynamic Font Size adjustment
• Intelligent display / concealment of Tiles based on selected protocols
• Written entirely in Swift and SwiftUI
• Made with Aloha on the Big Island of Hawai'i