TCP-IP Parameters

TCP-IP Parameters

Go one level up: Network

Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Parameter: ArpCacheLife
Type: string
Description:
This value determines the time to keep ARP cache. Default is 2 minutes and can be changed to any value in seconds.


Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Parameter: TcpWindowSize
Type: string
Description:
This parameter determines the maximum TCP receive window size offered by the system. The receive window specifies the number of bytes a sender may transmit without receiving an acknowledgment. In general, larger receive windows will improve performance over high delay, high bandwidth networks. For greatest efficiency, the receive window should be an even multiple of the TCP Maximum Segment Size (MSS). (default = 8760 for Ethernet)


Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Parameter: TcpMaxDataRetransmissions
Type: string
Description:
This parameter controls the number of times TCP will retransmit an individual data segment (not connection request segments) before aborting the connection. (default = 5)


Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Parameter: TcpMaxConnectRetransmissions
Type: string
Description:
This parameter determines the number of times TCP will retransmit a connect request (SYN) before aborting the attempt. (Default = 3)


Registry key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
Parameter: MTU
Type: string
Description:
Maximum Transmission Unit defines the maximum size of a packet that can be transferred in one frame over a network. For modem connections a MTU of '576' would be a good size. Default is 0xFFFFFFFF


Registry key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP
Parameter: DefaultTTL
Type: string
Description:
128. The default value is '32'


Registry key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP
Parameter: DefaultRcvWindow
Type: string
Description:
4228




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