Diameter Congestion and Filter Attributes (RFC7660)
Original Publication Date: 2015-Oct-01
Included in the Prior Art Database: 2016-Feb-05
Internet Society Requests For Comment (RFCs)
L. Bertz: AUTHOR [+3]
Two optional AVPs related to Explicit Congestion Notification (ECN) [RFC3168] are specified in this document. The first AVP provides direct support for filtering ECN-marked traffic [RFC3168] and the second AVP provides the ability to define alternate traffic treatment when congestion is experienced.
Internet Engineering Task Force (IETF) L. Bertz Request for Comments: 7660 S. Manning Category: Standards Track Sprint ISSN: 2070-1721 B. Hirschman October 2015
Diameter Congestion and Filter Attributes
This document defines optional Diameter attributes that can be used to help manage networks that use Explicit Congestion Notification (ECN) or Diameter traffic filters. These new attributes allow for improved data traffic identification, support of ECN, and minimal Diameter filter administration.
RFC 5777 defines a Filter-Rule Attribute Value Pair (AVP) that accommodates extensions for classification, conditions, and actions. It, however, does not support traffic identification for packets using Explicit Congestion Notification as defined in RFC 3168 and does not provide specific actions when the flow(s) described by the Filter-Rule are congested.
Further, a Filter-Rule can describe multiple flows but not the exact number of flows. Flow count and other associated data (e.g., packets) are not captured by accounting applications, leaving administrators without useful information regarding the effectiveness or appropriateness of the filter definition.
The optional attributes defined in this document are forward and backwards compatible with RFC 5777.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on Internet Standards is available in 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/rfc7660.
Bertz Standards Track [Page 1]
RFC 7660 Congestion and Filter Attributes October 2015
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