The authentication method of the ifIndex.
A value of forceUnauthorized(1) indicates that the
port is always unauthenticated. When set to this value
the ifindex is essentially disabled.
A value of auto(2) indicates that the ifindex will
authenticate users using PWA process. In this mode
the switch will provide all the services the
end-station will need to complete the login. These
services include a Dynamic Host Configuration Protocol
(DHCP) server, a Windows Internet Naming Server (WINS),
and a Domain Name Service (DNS) Server.
A value of forceAuthorized(3) indicates the port is always
authorized. When set to this value, the ifindex will
always be authenticated.
When set to promiscousAuto(4) the services that are
required to complete the network login are not provided
by the switch. These services must be provided on a
back-end network that the end-station can communicate
with. These services might be specific to the particular
Operating System of the end-station and could also include
the same services as provided in auto mode.