to find your RWIN: 1) Open up a DOS Prompt box: Start>Run>command 2) Type: ping -l #### dslreports.com #### is your MSS. (MSS = MTU - 40) Example Screenshot Take your average large packet ping + 50%, multiply that by your proposed advertised speed and divide that value by 8. You now have your raw RWIN. Example: 400ms average latency (x 1.5) with 53Kbps available downstream bandwidth: 450 x 53kbps =
