Login
- Table of Contents
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 06-IP Performance Optimization Configuration | 55.57 KB |
Table of Contents
1 IP Performance Optimization Configuration
IP Performance Optimization Overview
Configuring TCP Optional Parameters
Displaying and Maintaining IP Performance Optimization
l Support of the H3C WA series WLAN access points (APs) for features may vary by AP model. For more information, see Feature Matrix.
l The interface types and the number of interfaces vary by AP model.
l The term AP in this document refers to common APs, wireless bridges, and mesh APs.
l The models listed in this document are not applicable to all regions. Please consult your local sales office for the models applicable to your region.
This chapter includes these sections:
l IP Performance Optimization Overview
l Displaying and Maintaining IP Performance
The term router in this document refers to a router in a generic sense or a wireless access point with routing functions.
IP Performance Optimization Overview
In some network environments, you can adjust the IP parameters to achieve best network performance. IP performance optimization configuration includes:
l Configuring TCP timers
l Configuring the TCP send/receive buffer size
Configuring TCP Attributes
Configuring TCP Optional Parameters
TCP optional parameters that can be configured include:
l 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.
l 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 broken after the timer expires.
l 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 |
— |
|
Configure TCP synwait timer’s timeout value |
tcp timer syn-timeout time-value |
Optional By default, the timeout value is 75 seconds. |
|
Configure TCP finwait timer’s timeout value |
tcp timer fin-timeout time-value |
Optional By default, the timeout value is 675 seconds. |
|
Configure the size of TCP receive/send buffer |
tcp window window-size |
Optional By default, the buffer is 8 KB. |
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
Displaying and Maintaining IP Performance Optimization
|
To do… |
Use the command… |
Remarks |
|
Display current TCP connection state |
display tcp status |
Available in any view |
|
Display TCP connection statistics |
display tcp statistics |
Available in any view |
|
Display UDP statistics |
display udp statistics |
Available in any view |
|
Display statistics of IP packets |
display ip statistics |
Available in any view |
|
Display statistics of ICMP flows |
display icmp statistics |
Available in any view |
|
Display socket information |
display ip socket [ socktype sock-type ] [ task-id socket-id ] |
Available in any view |
|
Display FIB information |
display fib [ | { begin | include | exclude } regular-expression | acl acl-number | ip-prefix ip-prefix-name ] |
Available in any view |
|
Display FIB information matching the specified destination IP address |
display fib ip-address [ mask | mask-length ] |
Available in any view |
|
Clear statistics of IP packets |
reset ip statistics |
Available in user view |
|
Clear statistics of TCP connections |
reset tcp statistics |
Available in user view |
|
Clear statistics of UDP flows |
reset udp statistics |
Available in user view |
