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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
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Chapter 6      Configuring the System
Configuring TACACS+
Configuring a Switch for Local AAA
You can configure AAA to operate without a server by setting the switch to 
implement AAA in local mode. The switch then verifies authentication and 
authorization. No accounting is available in this configuration.
Beginning in privileged EXEC mode, follow these steps to configure the switch 
for local AAA:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
aaa new-model Enable AAA.
Step 3
aaa authentication login 
default local
Set the login authorization to default to local. 
Step 4
aaa authorization exec local Configure user AAA authorization for all network-related 
service requests, including SLIP, PPP NCPs, and ARA 
protocols.
Step 5
aaa authorization network 
local
Configure user AAA authorization to determine if the user 
is allowed to run an EXEC shell. 
Step 6
username name password 
password privilege level
Enter the local database. 
Repeat this command for each user.