华为命令更新20210824：
dis lldp neighbor brief ----#neighbor 邻居 brief 简要描述#

请进入命令行 采集相关信息  
Display diagnostic-information （此命令时间很长）
dis int brief (看端口)
reset  counters interface g0/0/26（重置端口的统计信息）
dis arp all
----------------------------------------------------------
display ?（?是英文）#查看命令#
（未开启激活LLDP步骤#sys--lldp en--quit--save--y--y#记得保存）
dis tran int g 0/0/14 ver----#看端口信息#可以看到光模块的信息
dis vlan
dis cpu-usage ----#查看内存使用信息#
display device 简写 dis dev-----#查看设备信息#
display current-configuration；简写dis cur；#显示当前配置#
-----------------------------------------------------------
关闭（恢复）某个端口
<S5720>sys
Enter system view, return user view with Ctrl+Z.
[S5720]int g0/0/7
[S5720-GigabitEthernet0/0/7]shutdown
[S5720-GigabitEthernet0/0/7]undo shutdown  （恢复）
quit 退出
----------------------------------------------------------
dis saved-configuration 查看命令
display current-configuration 简写dis cur；#显示当前配置#
-----------------------------------------------------------
将一个端口添加到某个VLAN中
<AC6605>sys 
Enter system view, return user view with Ctrl+Z.
[AC6605]interface GigabitEthernet0/0/3 
[AC6605-GigabitEthernet0/0/3]port link-type access
[AC6605-GigabitEthernet0/0/3]port default vlan 44
[AC6605-GigabitEthernet0/0/3]quit
[AC6605]quit
<AC6605>save
  The current configuration will be written to the device. 
  Are you sure to continue? (y/n)[n]:y
  It will take several minutes to save configuration file, please wait..........
  Configuration file has been saved successfully
  Note: The configuration file will take effect after being activated
------------------------------------------------------------------
将几个端口一次性添加到一个vlan中（port-group 1）
注意这里的group不能有和已知的group重复

<AC6605>sys 
Enter system view, return user view with Ctrl+Z.
[AC6605]port-group 1
[AC6605-port-group-1]group-member g0/0/3 to g0/0/6
[AC6605-port-group-1]port link-type access
[AC6605-GigabitEthernet0/0/3]port link-type access
[AC6605-GigabitEthernet0/0/4]port link-type access
[AC6605-GigabitEthernet0/0/5]port link-type access
[AC6605-GigabitEthernet0/0/6]port link-type access
[AC6605-port-group-1]port default vlan 44
[AC6605-GigabitEthernet0/0/3]port default vlan 44
[AC6605-GigabitEthernet0/0/4]port default vlan 44
[AC6605-GigabitEthernet0/0/5]port default vlan 44
[AC6605-GigabitEthernet0/0/6]port default vlan 44
[AC6605-port-group-1]quit
[AC6605]quit
<AC6605>save
  The current configuration will be written to the device. 
  Are you sure to continue? (y/n)[n]:Y
  It will take several minutes to save configuration file, please wait.........
  Configuration file has been saved successfully
  Note: The configuration file will take effect after being activated