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Dell PowerEdge TOE settings

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by dumphrey

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I have been trying to ferret out some problems with Vista clients connecting to our exchange server while here on the LAN. OWA from the internet works fine.
I put a sniffer (wireshark) on the local Vista machine and captured traffic between it and the server. Consistently I get an error TCP_CHECKSUM_INCORRECT. This is source "Vista" Destination "Exchange". After expanding the text in the details pane, I see it saying this can be caused by a tcp checksum offload. Would this be causing the intermittent connections between Vista clients and exchange we are seeing?
Exchange 2003 sp2, running on Server 2003 sp1. PowerEdge 2850.
And would I need to set the TOE settings in the server bios or the card bios? Or can they be changed in the driver settings?

2 replies

by stizzed

Best luck I had with TOE on a PowerEdge Server was physically disabling it. On the mainboard is an RJ11 Plug which disables the TOE on the interface. After trying many configuration recommendations from Dell I finally removed the plug and WOW! all the problems vanished.

Good Luck!

BTW: Most Dell PowerEdge Servers you order today have an option to remove (disable) TOE when you order it ...

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