Registry Tip : TCP Forwarding Buffer Patch

by Wayne Maples [Published on 20 April 2004 / Last Updated on 20 April 2004]

The TCP forwarding buffer used to route packets between interfaces can consume all available kernel memory in NT 4 SP4.

The forwarding buffer used to route packets between interfaces can consume all available kernel memory in NT 4 SP4. The default is 0xFFFFFFFF. Microsoft recommends setting:

Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\Tcpip\Parameters
Name: MaxForwardBufferMemory
Type: REG_DWORD
Value: 74240
Name: MaxNumForwardPackets
Type: REG_DWORD
Value: 50

See KB Q221926 for updated information.

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