Dell PowerConnect W-7200 Series Reference Manual page 560

Version
ArubaOS 6.2
Command Information
Platforms
All platforms
560 | show aaa authentication captive-portal
Description
parameters were added
the Authentication Protocol parameter was added, and the Use CHAP parameter was
deprecated.
Licensing
Base operating system
Command Mode
Enable or Config mode on master or local
controllers
Dell PowerConnect W-Series ArubaOS 6.2 | Reference Guide