Configuring tcp attributes, Configuring the tcp send/receive buffer size, Configuring tcp timers – H3C Technologies H3C WX3000E Series Wireless Switches User Manual
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# Enable VLAN-interface 2 to forward directed broadcasts.
[Switch-Vlan-interface2] ip forward-broadcast
Configuring TCP attributes
Configuring the TCP send/receive buffer size
Follow these steps to configure the TCP send/receive buffer size:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Configure the size of TCP
receive/send buffer
tcp window window-size
Optional
8 KB by default.
Configuring TCP timers
You can configure the following TCP timers:
•
synwait timer: When sending a SYN packet, TCP starts the synwait timer. If no response packet is
received within the synwait timer interval, the TCP connection cannot be created.
•
finwait timer: When a TCP connection is changed into FIN_WAIT_2 state, the finwait timer is
started. If no FIN packet is received within the timer interval, the TCP connection is terminated. If a
FIN packet is received, the TCP connection state changes to TIME_WAIT. If a non-FIN packet is
received, the system restarts the timer upon receiving the last non-FIN packet. The connection is
broken after the timer expires.
Follow these steps to configure TCP timers:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Configure the TCP synwait timer
tcp timer syn-timeout time-value
Optional
75 seconds by default.
Configure the TCP finwait timer
tcp timer fin-timeout time-value
Optional
675 seconds by default.
CAUTION:
The actual length of the finwait timer is determined by the following formula:
Actual length of the finwait timer = (Configured length of the finwait timer – 75) + configured length of the
synwait timer
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