Operation Manual – IP Address-IP Performance-IPXH3C S7500 Series Ethernet Switches Chapter 2 IP Performance Configuration2-22.2 IP Performance Configuration Task ListComplete the following tasks to configure IP performance:Task RemarksConfiguring TCP Attributes RequiredConfiguring to Send Special IP Packets to CPU RequiredConfiguring to Forward Layer 3 Broadcast Packets Required2.3 Configuring TCP AttributesFollow these steps to configure TCP attributes:To do… Use the command… RemarksEnter system view system-view —Configure timeout time forthe synwait timer in TCPtcp timer syn-timeouttime-valueRequiredThe default value is 75seconds.Configure timeout time forthe FIN_WAIT_2 timer inTCPtcp timer fin-timeouttime-valueRequiredThe default value is 675seconds.Configure the socketreceiving/sending buffersize of TCPtcp window window-sizeRequiredBy default, the size of thesocket receiving andsending buffers is 8 KB.2.4 Configuring to Send Special IP Packets to CPUUsually the switch sends TTL timeout packets and Unreachable packets to the CPU inthe process of forwarding IP packets. The CPU processes these special packets afterreceiving them. Incorrect configuration and malicious attacks will cause heavy CPUload. You can perform the following configuration to configure not to sendcorresponding packets to the CPU in order to ensure normal running.Follow these steps to configure to send special IP packets to CPU:To do… Use thecommand… RemarksEnter system view system-view —
