A10E/A28E/A28F Configuration Guide
2.5.6 Example for configuring interface protection
Networking requirements
As shown in Figure 2-7, PC 1, PC 2, and PC 5 belong to VLAN 10, and PC 3 and PC 4
belong to VLAN 20. The interfaces connecting two devices are in Trunk mode, but do not
allow VLAN 20 packets to pass. As a result, PC 3 and PC 4 fail to communicate with each
other. Enable interface protection on the interfaces of PC 1 and PC 2 which are connected to
Switch B. As a result, PC 1 and PC 2 fail to communicate with each other, but they can
communicate with PC 5 respectively.
Figure 2-8 Interface protection application networking
Configuration steps
Step 1 Create VLAN 10 and VLAN 20 on both Switch A and Switch B, and activate them.
Configure Switch A.
Alpha-A28E#hostname SwitchA
SwitchA#config
SwitchA(config)#create vlan 10,20 active
Configure Switch B.
Alpha-A28E#hostname SwitchB
SwitchB#config
SwitchB(config)#create vlan 10,20 active
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