4.2 Access-Accept

4.2. Access-Accept

Description

  Access-Accept packets are sent by the RADIUS server, and provide
  specific configuration information necessary to begin delivery of
  service to the user.  If all Attribute values received in an
  Access-Request are acceptable then the RADIUS implementation MUST
  transmit a packet with the Code field set to 2 (Access-Accept).

On reception of an Access-Accept, the Identifier field is matched with a pending Access-Request. The Response Authenticator field MUST contain the correct response for the pending Access-Request. Invalid packets are silently discarded.

A summary of the Access-Accept packet format is shown below. The fields are transmitted from left to right.

0                   1                   2                   3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

Code

  2 for Access-Accept.

Identifier

  The Identifier field is a copy of the Identifier field of the
  Access-Request which caused this Access-Accept.

Response Authenticator

  The Response Authenticator value is calculated from the Access-
  Request value, as described earlier.

Attributes

  The Attribute field is variable in length, and contains a list of
  zero or more Attributes.