Configuration Mode Commands : System Administration Commands : AAA, Role-Based Management, Radius, and TACACS+ Commands : username nopassword
  
username nopassword
Disables password protection for a user.
Syntax
username <user-id> nopassword
Parameters
<user-id>
User login: admin or monitor.
Example
amnesiac (config) # username monitor nopassword
Product
SCC, SteelHead Interceptor, SteelHead CX, SteelHead EX, SteelHead-v, SteelHead-c
Related Commands
show usernames