Configure Customized Rule of CPU Protection

Network Requirements

• Device is directly connected to PC1 and PC2.
• Configure the customized rule of the CPU protection on Device and trap the packet matching the condition to CPU for processing and enter the corresponding queue.

Network Topology

Figure 2–2 Networking of configuring the customized rule of the CPU protection

Configuration Steps

Step 1: Configure VLAN and add the port to the corresponding VLAN. (Omitted)

Step 2: Configure the IP address of the interface. (Omitted)

Step 3: Configure the customized rule of the CPU protection.

#Configure the customized rule and trap the IP packet with destination address 121.5.0.2 to CPU for processing, and set the COS value as 5.

Step 4: Check the result.

#View the customized rule on Device.

Device#show cpu-packet udf-table user-define 1 
 ether-type: 0x0800(IPv4) 
 dst-ip: host 121.5.0.2 
 location: global 
 valid: yes 
 action: trap 
 CoS: 5

#When PC1 accesses PC2, the customized rule of the CPU rule takes effect and trap the IP packet with destination address 121.5.0.2 on Device to CPU for processing and enter queue 5.

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  When the customized rule matches other condition and executes other modes, refer to the configuration.

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