3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring TCP Attributes 237
# Configure IP addresses for Vlan-interface3 and Vlan-interface2.
[SwitchA] interface vlan-interface 3
[SwitchA-Vlan-interface3] ip address 1.1.1.2 24
[SwitchA-Vlan-interface3] quit
[SwitchA] interface vlan-interface 2
[SwitchA-Vlan-interface2] ip address 2.2.2.2 24
# Enable Vlan-interface2 to forward directed broadcasts.
[SwitchA-Vlan-interface2] ip forward-broadcast
■ l Configure Switch B
# Enable Switch B to receive directed broadcasts.
<SwitchB> system-view
[SwitchB] ip forward-broadcast
# Configure a static route to the host.
[SwitchB] ip route-static 1.1.1.1 24 2.2.2.2
# Configure an IP address for Vlan-interface2.
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] ip address 2.2.2.1 24
After the above configurations, if you ping the subnet broadcast address
(2.2.2.255) of Vlan-interface2 of Switch A on the host, the ping packets can be
received by Vlan-interface2 of Switch B. However, if you execute the undo ip
forward-broadcast command, the ping packets cannot be received by
Vlan-interface2 of Switch B.
Configuring TCP
Attributes
TCP attributes that can be configured include:
synwait timer: When sending a SYN packet, TCP starts the synwait timer. If no
response packets are received within the synwait timer timeout, the TCP
connection is not successfully created.
finwait timer: When the TCP connection is in FIN_WAIT_2 state, finwait timer will
be started. If no FIN packets are received within the timer timeout, the TCP
connection will be terminated. If FIN packets are received, the TCP connection
state changes to TIME_WAIT. If non-FIN packets are received, the system restarts
the timer from receiving the last non-FIN packet. The connection is terminated
after the timer expires.
■ Size of TCP receive/send buffer
Follow these steps to configure TCP optional parameters:
To do... Use the command... Remarks
Enter system view system-view -