Qtech QSW-8200-28T-POEAC- DC [9/11] Sflow header len

User Manual

Chapter 3. Commands for sFlow 9

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3.6 sflow header-len

 Command: sflow header-len <length-value>

 no sflow header-len

 Function: Configure the length of the head data packet copied in the sFlow data

sampling. The “no” form of this command restores the default value.

 Parameter: <length-value> is the value of the length with a valid range of 32-256.

 Command Mode: Port Mode.

 Default: 128 by default.

 Usage Guide: If the packet sample can not be identified whether it is IPv4 or IPv6 when

sent to the CPU, certain length of the head of the group has to be copied to the sFlow

packet and sent out. The length of the copied content is configured by this command.

 Example: Configure the length of the packet data head copied in the sFlow data

sampling to 50.

 Switch(Config-If-Ethernet1/0/2)#sflow header-len 50

3.7 sflow priority

 Command: sflow priority <priority-value>

 no sflow priority

 Function: Configure the priority when sFlow receives packet from the hardware. The

"no” form of the command restores the default.

 Parameter: <priority-value> is the priority value with a valid range of 0-3.

 Command Mode: Global Mode.

 Default: The default value is 0.

 Usage Guide: When sample packet is sent to the CPU, it is recommended not to assign

high priority for the packet so that regular receiving and sending of other protocol

packet will not be interfered. The higher the priority value is set, the higher its priority

will be.

 Example: Configure the priority when sFlow receives packet from the hardware at

global mode.

 switch (config)#sflow priority 1

3.8 sflow rate

 Command: sflow rate { input <input-rate> | output <output-rate >}

 no sflow rate [input | output]

 Function: Configure the sample rate of the sFlow hardware sampling. The “no” form of

this command deletes the sampling rate value.

 Parameter: <input-rate> is the rate of ingress group sampling, the valid range is

1000~16383500.