Справочник Пользователя для 3com 3016 (3C13616)

In this example, 

user

 indicates the user name, 

123

 indicates the new user 

password.

[R3000] quit

[R3000] save

6 Execute the save command after modifying the user password to save the 

change. 

[R3000] quit

[R3000] save

If the Boot ROM password for the router is lost, contact your Service 
representative.