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Slow download, fast upload
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Slow download, fast upload - 3.Oct.2008 11:38:09 AM
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jpp3773
Posts: 3
Joined: 5.Aug.2008
Status: offline
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The overview of the problem that I am having here is slow download speeds through ISA 2004 SP3 on Windows server 2003 R2 standard edition SP2. We are on a 10Mb line here. I have tested the speed from speedtest.net and over our ISPs backbone as well. From speedtest.net, I pull 733 kb/s down and 8029 kb/s up. When we did the test over our ISP's backbone, we set it for a 9Mb test since we didn't want to max out the line. We were able to pull 9Mb down from that test. If I plug in directly to the switch, thus bypassing ISA, I get roughly 8k up and down from speedtest.net. For this reason, I have narrowed it down to the ISA itself. I have monitored the system resources during testing, and havent seen any indication that the cpu, memory or nics are being maxed. I have tried downloading large files from the internet directly to the ISA and to client behind the ISA and speed is the same. I have transfered large files off the isa by to the lan by opening a share and copying the file to my machine. This resulted in expected transfer speed. For this reason, I don't think that it is LAN traffic that is slowing down our download speed.
This is in an edge firewall configuration.
Anyone have any ideas or suggestions?
Thanks.
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RE: Slow download, fast upload - 3.Oct.2008 2:02:44 PM
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jpp3773
Posts: 3
Joined: 5.Aug.2008
Status: offline
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May have found the issue. The NIC is running half duplex. Going to try updating the driver tonight and switching to full duplex.
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