Configuration Roadmap 
1.  Configure physical member interfaces and add them to stack interfaces to ensure that 
member switches can forward data packets. Physical member interfaces on both ends of 
a stack link must be added to different stack interfaces. 
2.  Connect interfaces using SFP+ cables as shown in Figure 4-1. 
Configuration Procedure 
Step 1  Configure stack interfaces.   
# On SwitchA, configure GigabitEthernet0/0/27 and GigabitEthernet0/0/28 as physical 
member interfaces and add them to stack port 0/1 and stack port 0/2 respectively. 
<HUAWEI> system-view 
[HUAWEI] sysname SwitchA 
[SwitchA] interface stack-port 0/1 
[SwitchA-stack-port0/1] port interface gigabitethernet 0/0/27 enable 
Warning: Enabling stack port cause configuration loss on the interface, continue?[Y/N]:y 
Info: This operation may take a few seconds. Please wait for a moment.......   
[SwitchA-stack-port0/1] quit 
[SwitchA] interface stack-port 0/2 
[SwitchA-stack-port0/2] port interface gigabitethernet 0/0/28 enable 
Warning: Enabling stack port cause configuration loss on the interface, continue?[Y/N]:y  
Info: This operation may take a few seconds. Please wait for a moment....... 
[SwitchA-stack-port0/2] quit 
# On SwitchB, configure GigabitEthernet0/0/27 and GigabitEthernet0/0/28 as physical 
member interfaces and add them to stack port 0/1 and stack port 0/2 respectively. 
<HUAWEI> system-view 
[HUAWEI] sysname SwitchB 
[SwitchB] interface stack-port 0/1 
[SwitchB-stack-port0/1] port interface gigabitethernet 0/0/27 enable 
Warning: Enabling stack port cause configuration loss on the interface, continue?[Y/N]:y  
Info: This operation may take a few seconds. Please wait for a moment....... 
[SwitchB-stack-port0/1] quit 
[SwitchB] interface stack-port 0/2 
[SwitchB-stack-port0/2] port interface gigabitethernet 0/0/28 enable 
Warning: Enabling stack port cause configuration loss on the interface, continue?[Y/N]:y 
Info: This operation may take a few seconds. Please wait for a moment....... 
[SwitchB-stack-port0/2] quit 
# On SwitchC, configure GigabitEthernet0/0/27 and GigabitEthernet0/0/28 as physical 
member interfaces and add them to stack port 0/1 and stack port 0/2 respectively. 
<HUAWEI> system-view 
[HUAWEI] sysname SwitchC 
[SwitchC] interface stack-port 0/1 
[SwitchC-stack-port0/1] port interface gigabitethernet 0/0/27 enable 
Warning: Enabling stack port cause configuration loss on the interface, continue?[Y/N]:y                                             
Info: This operation may take a few seconds. Please wait for a moment....... 
[SwitchC-stack-port0/1] quit 
[SwitchC] interface stack-port 0/2 
[SwitchC-stack-port0/2] port interface gigabitethernet 0/0/28 enable 
Warning: Enabling stack port cause configuration loss on the interface, continue?[Y/N]:y