I don't see REPLY (the option provided in the question), start, stop, or record listed in the information from Cisco, so I am wondering is this a typo, is the answer provided supposed to be Response?
From: https://www.cisco.com/c/en/us/td/docs/net_mgmt/access_registrar/1-7/concepts/guide/radius.html
Types of RADIUS Messages
When you use RADIUS accounting, the client and server can also exchange the following two types of messages:
•![[Image: blank.gif]](https://www.cisco.com/c/dam/en/us/td/i/templates/blank.gif)
Accounting-Request—sent by the client (NAS) requesting accounting
•Accounting-Response—sent by the RADIUS server acknowledging accounting
https://drive.google.com/open?id=1rFppkI...sQk5kGKR-V
From: https://www.cisco.com/c/en/us/td/docs/net_mgmt/access_registrar/1-7/concepts/guide/radius.html
Types of RADIUS Messages
When you use RADIUS accounting, the client and server can also exchange the following two types of messages:
•
Accounting-Request—sent by the client (NAS) requesting accounting•
Accounting-Response—sent by the RADIUS server acknowledging accountinghttps://drive.google.com/open?id=1rFppkI...sQk5kGKR-V