CISCO IOS
 
 
- Accessing the router:
- 
- By the Console port 
- Or from network 
 
- Login to the router:
- 
- With a password stored in the config file. 
- Through access server (TACACS +, RADIUS)
- TACACS (Terminal Access Controller Access Control System)
- RADIUS (Remote Access Dial-In User Service)
 
 
- two mode
- 
- user exec mode
 routeur-t2>
- privilege exec mode (enable/disable)
 Routeur-t2#