Support of Fragmentation of RADIUS Packets (RFC7499)
Original Publication Date: 2015-Apr-01
Included in the Prior Art Database: 2015-Apr-07
Internet Society Requests For Comment (RFCs)
A. Perez-Mendez: AUTHOR [+7]
The RADIUS [RFC2865] protocol carries authentication, authorization, and accounting information between a RADIUS Client and a RADIUS Server. Information is exchanged between them through RADIUS packets. Each RADIUS packet is composed of a header, and zero or more attributes, up to a maximum packet size of 4096 bytes. The protocol is a request/response protocol, as described in the operational model ([RFC6158], Section 3.1).
Internet Engineering Task Force (IETF) A. Perez-Mendez, Ed. Request for Comments: 7499 R. Marin-Lopez Category: Experimental F. Pereniguez-Garcia ISSN: 2070-1721 G. Lopez-Millan University of Murcia D. Lopez Telefonica I+D A. DeKok Network RADIUS April 2015
Support of Fragmentation of RADIUS Packets
The Remote Authentication Dial-In User Service (RADIUS) protocol is limited to a total packet size of 4096 bytes. Provisions exist for fragmenting large amounts of authentication data across multiple packets, via Access-Challenge packets. No similar provisions exist for fragmenting large amounts of authorization data. This document specifies how existing RADIUS mechanisms can be leveraged to provide that functionality. These mechanisms are largely compatible with existing implementations, and they are designed to be invisible to proxies and "fail-safe" to legacy RADIUS Clients and Servers.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation.
This document defines an Experimental Protocol for the Internet community. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7499.
Perez-Mendez, et al. Experimental [Page 1]
RFC 7499 Fragmentation of RADIUS Packets April 2015