Administrator Guide

288 Authentication, Authorization, and Accounting
The TACACS+ server list can be configured with one or more hosts defined
via their network IP addresses. Each can be assigned a priority to determine
the order in which the TACACS+ client will contact the servers. TACACS+
contacts the server when a connection attempt fails or times out for a higher
priority server.
Each server host can be configured with a specific connection type, port,
timeout, and shared key, or the server hosts can be globally configured with
the key and timeout.
The TACACS+ server can do the authentication itself, or redirect the request
to another back-end device. All sensitive information is encrypted and the
shared secret is never passed over the network; it is used only to encrypt the
data.
Which TACACS+ Attributes Does the Switch Support?
Table 10-7 lists the TACACS+ attributes that the switch supports and
indicates whether the authorization or accounting service supports sending or
receiving the attribute. The authentication service does not use attributes.
The following attributes can be configured on the TACACS+ server(s) when
utilizing the switch TACACS+ service.
Table 10-7. Supported TACACS+ Attributes
Attribute Name Exec Authorization Command
Authorization
Accounting
cmd both (optional) sent sent
cmd-arg sent
elapsed-time sent
priv-lvl received
protocol sent
roles both (optional)
service=shell both sent sent
start-time sent
stop-time sent