Chapter 9 Configuring Authentication

Creating Named Server Groups

Creating Named Server Groups

By default, you can use all configured RADIUS or TACACS+ servers for authentication. All configured RADIUS servers belong to the default group named radius. All configured TACACS+ servers belong to the default group named tacacs+.

You can also create named groups of RADIUS or TACACS+ servers, to be used for specific authentication purposes. For example, you can use a subset of all configured RADIUS servers for iSCSI authentication of IP hosts requesting access to storage via a specific SCSI routing instance.

In the example configuration shown in Figure 9-2, the group of RADIUS servers named janus and the default group of all TACACS+ servers will be used for iSCSI authentication of IP hosts accessing storage via the SCSI routing instance named zeus. In the example configurations shown in Figure 9-5and Figure 9-7, the group of TACACS+ servers named sysadmin will be used for Enable and Login authentication.

Radius Server Groups

Use the commands in the following procedure to create a named group of RADIUS servers.

 

Command

Description

Step 1

 

 

enable

Enter Administrator mode.

Step 2

 

 

aaa group server radius janus

Create a group of RADIUS servers. For example create a group

 

 

named janus.

 

 

All authentication server groups must have unique names; you

 

 

cannot have a group of RADIUS servers named janus and a group

 

 

of TACACS+ servers named janus.

Step 3

 

 

aaa group server radius janus

Add a RADIUS server to the named group. For example, add the

 

server 10.5.0.61

RADIUS server at IP address 10.5.0.61 to the group named janus.

 

 

Because no port is specified, authentication requests to this server

 

 

use the default UDP port 1645. Servers are accessed in the order

 

 

in which they are defined within the named group.

Step 4

 

 

aaa group server radius janus

Add another RADIUS server to the named group. For example,

 

server 10.6.0.53

add the RADIUS server at IP address 10.6.0.53 to the group named

 

 

janus.

 

 

 

TACACS+ Server Groups

Use the commands in the following procedure to create a named group of TACACS+ servers.

 

Command

Description

Step 1

 

 

enable

Enter Administrator mode.

Step 2

 

 

aaa group server tacacs+

Create a group of TACACS+ servers. For example create a group

 

sysadmin

named sysadmin.

 

 

All authentication server groups must have unique names; you

 

 

cannot have a group of TACACS+ servers named sysadmin and a

 

 

group of RADIUS servers named sysadmin.

 

 

 

Cisco SN 5428-2 Storage Router Software Configuration Guide

 

OL-5239-01

9-15

 

 

 

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Cisco Systems SN 5428-2 manual Creating Named Server Groups, Radius Server Groups, Aaa group server radius janus
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SN 5428-2 specifications

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