Our official recommendation is for 63. IBM's position on a value >63 is " Since Windows 2000 supports TCP window scaling, it may be beneficial to use a larger TCP window size for Windows 2000 systems that are communicating exclusively with other Windows 2000 or UNIX systems".
Cordiali saluti Gianluca Mariani Tivoli TSM Global Response Team, Roma Via Sciangai 53, Roma phones : +39(0)659664598 +393351270554 (mobile) [EMAIL PROTECTED] Dirk Kastens <Dirk.Kastens@UNI-OSN To: [EMAIL PROTECTED] ABRUECK.DE> cc: Sent by: "ADSM: Dist Subject: Re: optimising tcpwindowsize and tcpbuffsizes Stor Manager" <[EMAIL PROTECTED] > 10/07/2002 12:41 Please respond to "ADSM: Dist Stor Manager" Hi, > TCPWINDOWSIZE should be set to 63 on Win2k. No, that's the recommendation for WinNT4. The maximum value for Win2k is 64 (see the MS knowledge base article Q224829). After we set the values for TCPWINDOWSIZE to 64 and the TCPBUFFSIZE to 512 the throughput of our Win2k clients has been increased dramatically from 200 kB/s to 4-5 MB/s. Regards, Dirk