1 交换机2台：

#查看版本
VRP (R) software, Version 5.170 (S5735 V200R021C10SPC600)

2 堆叠电缆交叉连接2交换机的25，26端口配置

#sw1
stack slot 0 renumber 0
stack slot 0 priority 150
interface stack-port 0/1
 port interface GigabitEthernet0/0/25 enable
 port interface GigabitEthernet0/0/26 enable

save
reboot
#sw2
stack slot 0 renumber 1
stack slot 1 priority 100
interface stack-port 1/2
 port interface GigabitEthernet1/0/25 enable
 port interface GigabitEthernet1/0/26 enable
save
reboot

3 检查堆叠配置信息

#sw1
dis stack 
Stack mode: Service-port
Stack topology type: Link
Stack system MAC: 3cd7-96b8-47e3
MAC switch delay time: 10 min
Stack reserved VLAN: 4093
Slot of the active management port: --
Slot      Role        MAC Address      Priority   Device Type
-------------------------------------------------------------
0         Master      3cd7-96b8-47e3   150        S5735S-L24T4S-A1
1         Standby     3cd7-96b8-56b7   100        S5735S-L24T4S-A1
#以上信息，表示堆叠建立成功，且主设备是堆叠ID为0的设备，即sw1