Ip Performance; Displaying And Debugging Ip Performance - 3Com 7700 Configuration Manual

56 C 4: N
HAPTER ETWORK

IP Performance

Displaying and
Debugging IP
Performance
P O
ROTOCOL PERATION
TCP attributes to be configured include:
■ synwait timer
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.
■ finwait timer
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.
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.
Table 11 Configure TCP Attributes
Operation
Configure synwait timer time
for TCP connection
establishment
Restore synwait timer time for
TCP connection establishment
to default value
Configure FIN_WAIT_2 timer
time of TCP
Restore FIN_WAIT_2 timer
time of TCP to default value
Configure the Socket
receiving/sending buffer size
of TCP
Restore the socket
receiving/sending buffer size
of TCP to default value
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 running 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 12 Display and Debug IP Performance
Operation
Display TCP connection state
Display TCP connection
statistics data
Display the VLAN interface
table information of the IP
layer
: When sending the syn packets, TCP starts the synwait timer. If
: When the TCP connection state turns from FIN_WAIT_1 to
Command
tcp timer syn-timeout time-value
undo tcp timer syn-timeout
tcp timer fin-timeout time-value
undo tcp timer fin-timeout
tcp window window-size
undo tcp window
Command
display tcp status
display tcp statistics
display ip interface [ interface_type interface_num |
interface_name ]