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T1 Router dropping out

By redcell593 ·
Hello,
Here's the problem I've been having.
I have a T1 connected to a netopia router setup by my ISP. The Netopia router is then connected to a linksys broadband router for a firewall then to a network switch. I have 10 computers connected to this switch, on these computers I run a brokerage software package that connects over the internet to make trades. I have traced this problem down to one user, every time he updates a trade by sending a ton of data out to the internet he causes everyone including himself to timeout. It seems like their is a bottleneck at this linksys firewall, I have contacted my ISP and they told me that I have not gone over 300kb which means its not a problem with my T1 being throttled down by my ISP.
Any help would be greatly appreciated

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by mikex In reply to T1 Router dropping out

What are the Download/Upload speeds on your T1?
What model are Netopia & Linksys?


If you are connecting over the internet from Windows 2000/XP through a cable/DSL router, make sure the MTU settings on the router on each end are set to 1492 or lower (if applicable). The default MTU settings on some routers are 1500, however data packets this size can sometimes be too large for some connections, causing the data to be degraded. If the router is set to 1492 or below and you are connecting to or from Windows XP, open the registry and go to

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces

Create a new DWOR MTU
Value: 1492 (decimal)

Creating this new DWORD will overrides the default MTU for the network interface it is added to.

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by piratetoolz In reply to T1 Router dropping out

Make sure the Netopia router is not trying to perform DCHP or any 'server' duties. That's what the linksys is for. If both are trying to do that, they will conflict, and you will drop your connection frequently.

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