This helps tons. speedguide.net has some registry 'tweeks' for different versions of windows.
Also Win7 had the ability to turn on a FASTTCP type of congestion management called Compound TCP. I haven't tried the windows version so ymmv, but I have experienced great success by changing the congestion avoidance algorithm on other devices. -wil On Nov 25, 2010, at 4:19 PM, Adrian Chadd <adr...@creative.net.au> wrote: > TCP maximum window sizes. > > Application socket buffer sizes. > > Fix those and re-test! > > > > Adrian > > On Fri, Nov 26, 2010, Harris Hui wrote: >> >> >> Hi >> >> Does anyone have experience on design / implementing the Jumbo frame >> enabled network? >> >> I am working on a project to better utilize a fiber link across east coast >> and west coast with the Juniper devices. >> >> Based on the default TCP windows in Linux / Windows and the latency between >> east coast and west coast (~80ms) and the default MTU size 1500, the >> maximum throughput of a single TCP session is around ~3Mbps but it is too >> slow for us to backing-up the huge amount of data across 2 sites. >> >> The following is the topology that we are using right now. >> >> Host A NIC (MTU 9000) <--- GigLAN ---> (MTU 9216) Juniper EX4200 (MTU 9216) >> <---GigLAN ---> (MTU 9018) J-6350 cluster A (MTU 9018) <--- fiber link >> across site ---> (MTU 9018) J-6350 cluster B (MTU 9018) <--- GigLAN ---> >> (MTU 9216) Juniper EX4200 (MTU 9216) <---GigLAN ---> (MTU 9000) NIC - Host >> B >> >> I was trying to test the connectivity from Host A to the J-6350 cluster A >> by using ICMP-Ping with size 8000 and DF bit set but it was failed to ping. >> >> Does anyone have experience on it? please advise. >> >> Thanks :-) > -- > - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support > - > - $24/pm+GST entry-level VPSes w/ capped bandwidth charges available in WA - >
