Remote AAA (RADIUS) defaults and limits

Setting	Default value / limit
Maximum number of RADIUS servers in an AAA group	16
Maximum number of RADIUS servers that can be configured	16
Maximum number of user-defined AAA server groups that can be configured	28
RADIUS authentication	Disabled
RADIUS authentication global timeout	5 seconds
RADIUS authentication passkey (shared secret)	None
RADIUS authentication `udp-port`	1812
RADIUS global authentication protocol	PAP
RADIUS global retries	1 retry
RADIUS server access through the default VRF	default¹

The default value is

default

, unless another VRF is specified during the server configuration.