3com 8807 User Guide

IP performance configuration includes:

■

TCP attributes that can be configured include:

■

synwait timer: When sending the syn packets, TCP starts the synwait timer. If 
response packets are not received before synwait timeout, the TCP connection 
is terminated. The timeout of synwait timer ranges from 2 to 600 seconds and 
it is 75 seconds by default.

■

finwait timer: When the TCP connection state turns from FIN_WAIT_1 to 
FIN_WAIT_2, finwait timer is started. If FIN packets are not received before 
finwait timer timeout, the TCP connection is terminated. The timeout of 
finwait timer ranges from 76 to 3600 seconds and it is 675 seconds by default.

■

The receiving/sending buffer size of the connection-oriented socket is in the 
range from 1 to 32 KB and is 8 KB by default.

Perform the following configuration in System view.

After the above configuration, execute the display command in any view to 
display the running of the IP performance configuration, and to verify the effect of 
the configuration.

Table 58   Configure TCP attributes

Configure timeout time for the synwait timer 
in TCP 

tcp timer syn-timeout time-value 

Restore the default timeout time of the 
synwait timer 

undo tcp timer syn-timeout 

Configure timeout time for the FIN_WAIT_2 
timer in TCP 

tcp timer fin-timeout time-value 

Restore the default timeout time of the 
FIN_WAIT_2 timer 

undo tcp timer fin-timeout 

Configure the socket receiving/sending buffer 
size of TCP 

tcp window window-size 

Restore the socket receiving/sending buffer 
size of TCP to default value 

Table 59   Display IP performance

Display TCP connection state 

display tcp status