Restrictions for Configuring RadSec
The following restrictions apply to the RadSec feature:
A RADIUS client uses an ephemeral port as the source port. This source port should not be used for UDP, Datagram Transport Layer Security (DTLS), and Transport Layer Security (TLS) at the same time.
Although there is no configuration restriction, we recommend that you use the same type, either only TLS or only DTLS, for a server under an AAA server group.
RadSec is supported only on IPv4 connections.