RFC 2722 (rfc2722) - Page 2 of 48
Traffic Flow Measurement: Architecture
Alternative Format: Original Text Document
RFC 2722 Traffic Flow Measurement: Architecture October 1999
4 Meters 17
4.1 Meter Structure . . . . . . . . . . . . . . . . . . . . . 17
4.2 Flow Table . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3 Packet Handling, Packet Matching . . . . . . . . . . . . . 20
4.4 Rules and Rule Sets . . . . . . . . . . . . . . . . . . . 23
4.5 Maintaining the Flow Table . . . . . . . . . . . . . . . . 28
4.6 Handling Increasing Traffic Levels . . . . . . . . . . . . 29
5 Meter Readers 30
5.1 Identifying Flows in Flow Records . . . . . . . . . . . . 30
5.2 Usage Records, Flow Data Files . . . . . . . . . . . . . . 30
5.3 Meter to Meter Reader: Usage Record Transmission . . . . 31
6 Managers 32
6.1 Between Manager and Meter: Control Functions . . . . . . 32
6.2 Between Manager and Meter Reader: Control Functions . . . 33
6.3 Exception Conditions . . . . . . . . . . . . . . . . . . . 35
6.4 Standard Rule Sets . . . . . . . . . . . . . . . . . . . . 36
7 Security Considerations 36
7.1 Threat Analysis . . . . . . . . . . . . . . . . . . . . . 36
7.2 Countermeasures . . . . . . . . . . . . . . . . . . . . . 37
8 IANA Considerations 39
8.1 PME Opcodes . . . . . . . . . . . . . . . . . . . . . . . 39
8.2 RTFM Attributes . . . . . . . . . . . . . . . . . . . . . 39
9 APPENDICES 41
Appendix A: Network Characterisation . . . . . . . . . . . . . 41
Appendix B: Recommended Traffic Flow Measurement Capabilities . 42
Appendix C: List of Defined Flow Attributes . . . . . . . . . . 43
Appendix D: List of Meter Control Variables . . . . . . . . . . 44
Appendix E: Changes Introduced Since RFC 2063 . . . . . . . . . 45
10 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 45
11 References . . . . . . . . . . . . . . . . . . . . . . . . . . 46
12 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 47
13 Full Copyright Statement . . . . . . . . . . . . . . . . . . . 48
Brownlee, et al. Informational
