Cisco Catalyst 4500 Series Software Configuration Guide

3-15
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 3 Configuring the Switch for the First Time
Controlling Access to Privileged EXEC Commands
For information on how to display the password or access level configuration, see the “Displaying the
Password, Access Level, and Privilege Level Configuration” section on page 3-24.
Controlling Switch Access with TACACS+
This section describes how to enable and configure TACACS+, which provides detailed accounting
information and flexible administrative control over authentication and authorization processes.
TACACS+ is facilitated through authentication, authorization, accounting (AAA) and can be enabled
only through AAA commands.
Note For complete syntax and usage information for the commands used in this section, see the Cisco IOS
Security Command Reference, Release 12.2.
This section contains the following configuration information:
• Understanding TACACS+, page 3-15
• TACACS+ Operation, page 3-17
• Configuring TACACS+, page 3-17
• Displaying the TACACS+ Configuration, page 3-22
Understanding TACACS+
TACACS+ is a security application that provides centralized validation of users attempting to gain access
to your switch. TACACS+ services are maintained in a database on a TACACS+ daemon typically
running on a UNIX or Windows NT workstation. You should have access to and should configure a
TACACS+ server before configuring TACACS+ features on your switch.
TACACS+ provides for separate and modular AAA facilities. TACACS+ allows for a single access
control server (the TACACS+ daemon) to provide each service—authentication, authorization, and
accounting—independently. Each service can be locked into its own database to take advantage of other
services available on that server or on the network, depending on the capabilities of the daemon.
The goal of TACACS+ is to provide a method for managing multiple network access points from a single
management service. Your switch can be a network access server along with other Cisco routers and
access servers. A network access server provides connections to a single user, to a network or
subnetwork, and to interconnected networks as shown in Figure 3-4.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E