Remote Aaa Services; Aaa Server Groups; Aaa Service Configuration Options - Cisco nexus 5000 series Cli Configuration Manual

Chapter 1 Configuring AAA
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m

Remote AAA Services

Remote AAA services provided through RADIUS and TACACS+ protocols have the following
advantages over local AAA services:
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AAA Server Groups

You can specify remote AAA servers for authentication, authorization, and accounting using server groups.
A server group is a set of remote AAA servers that implement the same AAA protocol. The purpose of a
server group is to provide for failover servers in case a remote AAA server fails to respond. If the first remote
server in the group fails to respond, the next remote server in the group is tried until one of the servers sends
a response. If all the AAA servers in the server group fail to respond, then that server group option is
considered a failure. If required, you can specify multiple server groups. If a Nexus 5000 Series switch
encounters errors from the servers in the first group, it tries the servers in the next server group.

AAA Service Configuration Options

On Nexus 5000 Series switches, you can have separate AAA configurations for the following services:
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Table 1-1
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Table 1-1
AAA Service Configuration Option
Telnet or SSH login
Console login
User session accounting
You can specify the following authentication methods for the AAA services:
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OL-16597-01
User password lists for each Nexus 5000 Series switch in the fabric are easier to manage.
AAA servers are already deployed widely across enterprises and can be easily used for AAA
services.
The accounting log for all switches in the fabric can be centrally managed.
User attributes for each switch in the fabric than using the local databases on the switches are easier
to manage.
User Telnet or Secure Shell (SSH) login authentication
Console login authentication
User management session accounting
lists the CLI commands for each AAA service configuration option.
AAA Service Configuration Commands
RADIUS server groups—Uses the global pool of RADIUS servers for authentication.
Specified server groups—Uses specified RADIUS or TACACS+ server groups for authentication.
Local—Uses the local username or password database for authentication.
None—Uses only the user name.
Related Command
aaa authentication login default
aaa authentication login console
aaa accounting default
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Information About AAA
1-3