3.2 RADIUS Requests

The term request refers to both the authentication/accounting request packet from a NAS to a RADIUS server and the response packet that the server sends back to the NAS.

Each request contains the following fields:

`Code'

The code field identifies the type of the request.

`Identifier'

The number in the range 0--255 used to match the request with the reply.

`Length'

The length of the request packet.

`Authenticator'

The 16-byte hash value used to authenticate the packet.

`Attributes'

The list of attribute-value pairs carrying actual information about the request.

3.2.1 Authentication Requests
3.2.2 Accounting Requests