« SpeedGuide.net TCP Analyzer Results »
Tested on: 2012.08.02 17:45
IP address: 24.180.xx.xxx
Client OS/browser: Windows 7 (Chrome 21.0.1180.60)

TCP options string: 020405b401010402
MSS: 1460
MTU: 1500
TCP Window: 64240 (multiple of MSS)
RWIN Scaling: 0 bits
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2570kbps (321KBytes/s)
BDP limit (500ms): 1028kbps (128KBytes/s)
MTU Discovery: ON
TTL: 52
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
I currently have Charter Communications Ultra 100 internet, which I should be getting 100Mb/s download, but I do not. I contacted them, and they said my issue could be the RWIN value is incorrect. They say I should have RWIN of 1048320. Is there a way to change my RWIN to the value they specified? I have Windows 7. I know about the autotuning, I would just like to know if there is a way.