Brown bear in Silver Salmon Creek, Lake Clark National Park and Preserve, Alaska (© Danny Green/Nature Picture Library)

Chattooga River in the Appalachian Mountains, North Carolina (© mtilghma/Getty Images)

Sunset from Olmsted Point, Yosemite National Park, California, USA (© Robb Hirsch/Tandem Stills + Motion)

This document defines an optional extension to the Simple Two-way Active Measurement Protocol (STAMP) that enables a Session-Reflector to send asymmetrical packets, that is, response packets whose size or quantity differs from those sent by the…