CHAPTER
6-1
Catalyst 3550 Multilayer Switch Software Configuration Guide
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6
Administering the Switch
This chapter describes how to perform one-time operations to administer your switch. This chap ter
consists of these sections:
•Preventing Unauthorized Access to Your Switch, page 6-1
•Protecting Access to Privileged EXEC Commands, page 6-2
•Controlling Switch Access with TACACS+, page 6-10
•Controlling Switch Access with RADIUS, page 6-17
•Configuring the Switch for Local Authentication and Authorization, page 6-31
•Managing the System Time and Date, page 6-32
•Configuring a System Name and Prompt, page 6-46
•Creating a Banner, page 6-49
•Managing the MAC Address Table, page 6-51
•Optimizing System Resources for User-Selected Features, page 6-57

Preventing Unauthorized Access to Your Switch

You can prevent unauthorized users from reconfiguring your switch and viewing configuration
information. Typically, you want network administrators to have access to your switch while you restrict
access to users who dial from outside the network through an asynchronous port, c onne ct fr om outside
the network through a serial port, or connect through a te rmin al o r wo rk stati on from w ith in th e loca l
network.