Transport Mappings for Real-time Application Quality-of-Service Monitoring (RAQMON) Protocol Data Unit (PDU)
RFC 4712
Network Working Group A. Siddiqui
Request for Comments: 4712 D. Romascanu
Category: Standards Track Avaya
E. Golovinsky
Alert Logic
M. Rahman
Samsung Information Systems America
Y. Kim
Broadcom
October 2006
Transport Mappings for Real-time Application Quality-of-Service
Monitoring (RAQMON) Protocol Data Unit (PDU)
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This memo specifies two transport mappings of the Real-Time
Application Quality-of-Service Monitoring (RAQMON) information model
defined in RFC 4710 using TCP as a native transport and the Simple
Network Management Protocol (SNMP) to carry the RAQMON information
from a RAQMON Data Source (RDS) to a RAQMON Report Collector (RRC).
Siddiqui, et al. Standards Track [Page 1]
RFC 4712 Transport Mappings for RAQMON PDU October 2006
Table of Contents
1. Introduction ....................................................3
2. Transporting RAQMON Protocol Data Units .........................3
2.1. TCP as an RDS/RRC Network Transport Protocol ...............3
2.1.1. The RAQMON PDU ......................................5
2.1.2. The BASIC Part of the RAQMON Protocol Data Unit .....7
2.1.3. APP Part of the RAQMON Protocol Data Unit ..........14
2.1.4. Byte Order, Alignment, and Time Format of
RAQMON PDUs ........................................15
2.2. Securing RAQMON Session ...................................15
2.2.1. Sequencing of the Start TLS Operation ..............18
2.2.2. Closing a TLS Connection ...........................21
2.3. SNMP Notifications as an RDS/RRC Network Transport
Protocol ..................................................22
3. IANA Considerations ............................................38
4. Congestion-Safe RAQMON Operation ...............................38
5. Acknowledgements ...............................................39
6. Security Considerations ........................................39
6.1. Usage of TLS with RAQMON ..................................41
6.1.1. Confidentiality & Message Integrity ................41
6.1.2. TLS CipherSuites ...................................41
6.1.3. RAQMON Authorization State .........................42
7. References .....................................................43
7.1. Normative References ......................................43
7.2. Informative References ....................................44
Appendix A. Pseudocode ............................................46
Siddiqui, et al. Standards Track [Page 2]
RFC 4712 Transport Mappings for RAQMON PDU October 2006
1. Introduction
The Real-Time Application QoS Monitoring (RAQMON) Framework, as
outlined by [RFC4710], extends the Remote Monitoring family of
protocols (RMON) by defining entities such as RAQMON Data Sources
RDS) and RAQMON Report Collectors (RRC) to perform various
application monitoring in real time. [RFC4710] defines the relevant
metrics for RAQMON monitoring carried by the common protocol data
unit (PDU) used between a RDS and RRC to report QoS statistics. This
memo contains a syntactical description of the RAQMON PDU structure.
The following sections of this memo contain detailed specifications
for the usage of TCP and SNMP to carry RAQMON information.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
2. Transporting RAQMON Protocol Data Units
The RAQMON Protocol Data Unit (PDU) utilizes a common data format
understood by the RDS and the RRC. A RAQMON PDU does not transport
application data but rather occupies the place of a payload
specification at the application layer of the protocol stack. As
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