bent240LV Posted May 14, 2005 CID Share Posted May 14, 2005 i am using cablenut setting from VanBuren and when i use the tcp/ip analyzer it always recommends me to change my RWIN to a multiple of MSS shold i do this? also i just installed my vonage wired router does anyone think i should make any changes in cablenut to get better performance? Quote Link to comment Share on other sites More sharing options...
Orignal_Cronicus Posted May 14, 2005 CID Share Posted May 14, 2005 ok i just joined this foroum to help build a portifilio for when i get my masters degree but anyway.. the fiorst thing im focousing on is rwin recently i have aquired proof that u should not set ur rwin based on multiples of mss however this information and the "new seting" i am here to test and prove were based for svr protocols. so i am basicly doing this to prove 1 question If it works for a svr wont it work 4 u 2 I might even write a book heres what i propose if ur analizer says it wants a new rwin give it this 1 to find ur ideal rwin... The formula for finding your "ideal" RWIN, is to take your latency (average ping time in ms x 1.5), multiply that by your advertised (download) speed, and divide that by 8. example of my settings 100ms x 1.5 -------150 150 x 6223 but well just say 6000 to prevent overload -------900000 900000 / 8 ----112500 <--------ahhahahhahahha do a speed test after rebooting and disabling all u can do this rwin forumla, restart and re do a speed test Quote Link to comment Share on other sites More sharing options...
Orignal_Cronicus Posted May 14, 2005 CID Share Posted May 14, 2005 o and set ur mss to 1460"optimal seting -backed by http://www.microsoft.com/technet/prodtechnol/windows2000serv/maintain/optimize/default.mspx Quote Link to comment Share on other sites More sharing options...
php Posted May 14, 2005 CID Share Posted May 14, 2005 which cablenut settings are you using? Quote Link to comment Share on other sites More sharing options...
bent240LV Posted May 14, 2005 Author CID Share Posted May 14, 2005 the neweest vanburen setting for 4000/384 and and mss is already at 1460 Quote Link to comment Share on other sites More sharing options...
Orignal_Cronicus Posted May 14, 2005 CID Share Posted May 14, 2005 i honstly have never even used cable nut i can give it a shot but i have traditionaly set the mtu to 1499 the mss to 1460 rwin to 112500 ttl 128 auto discovermtu and blk hole off my co worker insisted on tweaking everything else for my svr and usercomp and have seen phenominal results Quote Link to comment Share on other sites More sharing options...
Orignal_Cronicus Posted May 14, 2005 CID Share Posted May 14, 2005 hes the one i need to get on this foroum Quote Link to comment Share on other sites More sharing options...
VanBuren Posted May 14, 2005 CID Share Posted May 14, 2005 hey bent240LV your using windows XP with SP2 right? with SP2 the analyzers will read "DefaultReceiveWindow" instead of "TcpWindowSize" the TcpWindowSize suppose to be multiple with your MSS quote from http://www.dslnuts.com/2kxp.shtml "32. TcpWindowSize - This parameter determines the maximum TCP receive window size offered by the system. The receive window specifies the number of bytes a sender may transmit without receiving an acknowledgment. In general, larger receive windows will improve performance over high (delay * bandwidth ) networks. For highest efficiency, the receive window should be an even multiple of the TCP Maximum Segment Size (MSS). Value Type: REG_DWORD Quote Link to comment Share on other sites More sharing options...
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