设备默认管理地址 10.90.90.90/8

Tftp  方式升级
命令行
Download firmware_fromTFTP <ipaddr> <path_filename 64>        //软件升级
Download cfg_fromTFTP <ipaddr> <path_filename 64>  
//配置文件更新

恢复出厂设置
命令行
Reset config
Reset system

忘记登录口令
解决方案 
手工恢复出厂设置
DES-3526 DES-3326S 在交换机引导时，加载交换机映像到100%前 ，按住SHIFT + 3 键。
记录设备MAC信息联系D-LINK客服

修改设备名称：
DES-3526:admin#config command_prompt L2-Switch-081
Command: config command_prompt L2-Switch-081
Success.
L2-Switch-081:admin#

修改设备管理地址：
L2-Switch-081:admin#config ipif System ipaddress 192.168.0.1/24 vlan default   
Command: config ipif System ipaddress 192.168.0.1/24 vlan default
Note: All configuration on this interface will return to default setting.
Success.

创建VLAN
DES-3028:4#create vlan vlan2 tag 2               
Command: create vlan vlan2 tag 2
Success.

添加Vlan成员
DES-3028:4#config vlan vlan2 add untagged 1-12      
Command: config vlan vlan2 add untagged 1-12
Success.   //添加access mode 端口

DES-3028:4#config vlan vlan2 add tagged 24              
Command: config vlan vlan2 add tagged 24
Success. //添加trunk mode 端口

Vlan透传
跨交换机的VLAN
switch-A
DES-3526:admin#create vlan vlan10 tag 10               
DES-3526:admin#config vlan vlan10 add tagged 23
DES-3526:admin#config vlan vlan10 add untagged 1-8
switch-B
DES-3526:admin#create vlan vlan10 tag 10               
DES-3526:admin#config vlan vlan10 add tagged 24
DES-3526:admin#config vlan vlan10 add untagged 1-8

端口镜像配置
DES-3526:admin#enable mirror
DES-3526:admin#config mirror port 2 add source ports 23 both

DES-3526:admin#enable mirror
DES-3526:admin#config mirror port 1 add source ports 2-23 both