Supported Servers; Adding A New Server Group - Dell PowerConnect W-Airwave Configuration Manual

independent authentication servers; users may fail authentication on one server but can be authenticated on
another server.
Before enabling fail-through authentication, note the following:
This feature is not supported for 802.1x authentication with a server group that consists of external EAP

compliant RADIUS servers. You can, however, use fail-through authentication when the 802.1x
authentication is terminated on the controller (AAA FastConnect).
Enabling this feature for a large server group list may cause excess processing load on the controller. Best

practices are to use server selection based on domain matching whenever possible.
Certain servers, such as the RSA RADIUS server, lock out the controller if there are multiple authentication

failures. Therefore you should not enable fail-through authentication with these servers.
When fail-through authentication is enabled, users that fail authentication on the first server in the server list
should be authenticated with the second server.

Supported Servers

ArubaOS supports the following external authentication servers:
RADIUS (Remote Authentication Dial-In User Service)

LDAP (Lightweight Directory Access Protocol)

TACACS+ (Terminal Access Controller Access Control System)

Windows

Additionally, you can use the controller's internal database to authenticate users. You create entries in the
database for users and their passwords and default role.
You can create groups of servers for specific types of authentication. For example, you can specify one or more
RADIUS servers to be used for 802.1x authentication. The list of servers in a server group is an ordered list. This
means that the first server in the list is always used unless it is unavailable, in which case the next server in the list
is used. You can configure servers of different types in one group — for example, you can include the internal
database as a backup to a RADIUS server.
Server names are unique. You can configure the same server in multiple server groups. You must configure the
server before you can add it to a server group.

Adding a New Server Group

The server group is assigned to the server group for 802.1x authentication.
To create a new server group, click the Add button, or to edit an existing group, click the pencil icon next to that
group. The Add New Server Group page appears, and contains the following fields, as described in
Table 73
Field
General Settings
Folder
Name
Dell PowerConnect W-AirWave 7.5 | Configuration Guide
Security > Server Groups > Add or Edit Server Group Fields and Descriptions
Default
Top
Blank
Description
Set the folder with which the server is associated. The drop-down menu displays all
folders available for association with the server group.
Enter the name of the server group.
Table 73:
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