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Configuring TCP/UDP Packet Protection
Configuring TCP/UDP Packet Protection
Context
When a large number of protocol packets enter a device, the device will discard some protocol packets to protect CPU resources. In this case, you can configure the device to protect TCP and UDP packets based on DSCP values. After the protection function is configured, the device sends TCP and UDP packets with the specified DSCP value to a certain queue so that packets in the queue are preferentially sent to the CPU for processing.
This function is supported in V300R019C10 and later versions
Only the AR651, AR651K, AR651C, AR651F-Lite, AR651U-A4, AR651W-8P, AR651W, and AR657W support this function.
Only the AR6120, AR6120-VW, AR6121E, AR6121, AR6121K, AR6140K-9G-2AC, AR6140E-9G-2AC, and AR6140-9G-2AC support this function.
Only the AR6120-S, AR6121C-S, and AR6140-S support this function.
Procedure
Configuring TCP packet protection
Run the system-view command to enter the system view.
Run the control-packet tcpip-precedenceip-precedence-valueinputqueuequeue-value command to configure TCP packet protection based on DSCP values.
By default, TCP packet protection based on DSCP values is not configured.
Configuring UDP packet protection
Run the system-view command to enter the system view.
Run the control-packet udpip-precedenceip-precedence-valueinputqueuequeue-value command to configure UDP packet protection based on DSCP values.
By default, UDP packet protection based on DSCP values is not configured.