Hardware and Software Requirements - Trading Technologies
Hardware and Software Requirements - Trading Technologies
Hardware and Software Requirements - Trading Technologies
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TT WAN Router Registry<br />
• Add the following DWORDs (<strong>and</strong> values) to the Registry in order to allow for faster<br />
resource recovery…<br />
HKEY_LOCALMACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\ Parameters<br />
• SynAttackProtect = 00000001<br />
• TcpTimedWaitDelay = 1e<br />
Note: The value 1e represents 30 seconds in hexadecimal.<br />
• Delete the TCPWindowSize setting from the Registry (if it exists), located at: HKEY_LO-<br />
CAL_MACHINE\SYSTEM\CurrentControlSet\Services\ Tcpip\Parameters<br />
Note: TCPWindowSize should be deleted within the Registry on TT WAN Routers only.<br />
The TTMRD.cfg file will manage this under the TCP_Window_Size parameter entry. This<br />
is so TT can manage the connection at the neighbor level. If you leave this setting in the<br />
registry, then it will override the TTMRD.cfg file.<br />
• Within the TTMRD.cfg file, add the TCP_Window_Size parameter for each neighbor if<br />
there is a delay in round trip times for small sized circuits or if you have a circuit going<br />
overseas. In order to determine the best setting for TCP_Window_Size, follow the below<br />
steps to compute the needed value on every TT WAN Router:<br />
Step<br />
1.<br />
2.<br />
3.<br />
Description<br />
Determine the busiest time of day when the most market data will be<br />
subscribed to over the data line between WAN Routers.<br />
Run a continuous ping from one of the TT WAN Routers to its neighbor<br />
on the other side of the link using the “-t” switch during this busy time,<br />
for at least 30 minutes.<br />
Press “Ctrl-C” to stop the continuous ping. Note the average response<br />
time.
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