3com 3.01.01 用户手册

IP performance configuration includes:

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The TCP attributes that can be configured include:

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synwait timer

: When sending the syn packets, TCP starts the synwait timer. If 

response packets are not received before synwait timeout, the TCP connection 
will be terminated. The timeout of synwait timer ranges 2 to 600 seconds and 
it is 75 seconds by default. 

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finwait timer

: When the TCP connection state turns from FIN_WAIT_1 to 

FIN_WAIT_2, finwait timer will be started. If FIN packets are not received before 
finwait timer timeout, the TCP connection will be terminated. Finwait ranges 
76 to 3600 seconds and it is 675 seconds by default. 

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The receiving/sending buffer size of connection-oriented Socket is in the range 
from 1 to 32K bytes and is 4K bytes by default.

Perform the following configuration in System view.

By default, the TCP finwait timer is 675 seconds, the synwait timer is 75 seconds, 
and the receiving/sending buffer size of connection-oriented Socket is 4K bytes.

After the previous configuration, display the operation of the IP Performance 
configuration in all views, and verify the effect of the configuration. Execute the 
debugging command in user view to debug IP Performance configuration.

Table 14   Configure TCP Attributes

Configure synwait timer time for TCP 
connection establishment

tcp timer syn-timeout time-value

Restore synwait timer time for TCP connection 
establishment to default value

Configure FIN_WAIT_2 timer time of TCP

tcp timer fin-timeout time-value

Restore FIN_WAIT_2 timer time of TCP to 
default value

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 15   Display and Debug IP Performance

Display TCP connection state

Display TCP connection statistics data

Display IP statistics information

Display ICMP statistics information

Display the summary of the FIB