IPFIX Information Model <draft-ipfix-info-03.txt>

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IPFIX Information Modelltdraft-ipfix-info-03.txtgt

• Paul Callato, Jeff Meyer, Juergen Quittek
• 59th IETF meeting, IPFIX session

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Changes Since Version -02

• several editorial changes
• changed the XML representation of the information
  model
• replaced representation of IPFIX protocol fields
• added representation of field template
• added representation of abstract data types
• modified list of (abstract) data types
• modified list of fields

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XML Representation
translate with XSLT scripts and include
section 2
info model schema .xsd
info model I-D .xml
section 3
translate with XSLT scripts
validate
info model .xml
info model I-D .txt
section 4
include in appendices
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Issue 1 Datatypes

• Concrete XML data types were replaced by abstract
  IPFIX data types
• What is the useful set in order to be prepared
  for future extensions?
• version -02
• byte, unsignedByte
• short, unsignedShort
• int, unsignedInt
• long, unsignedLong
• float, double
• hexBinary
• string
• boolean
• dateTime, ipdrdateTimeMsecm
• ipdrdateTimeUsec, ipfixdateTimeNsec
• ipdripV4Addr, ipdripV6Addr
• ipdrUUID

• version -03
• octet
• unsigned16
• unsigned32
• unsigned64
• float32
• octetArray
• string
• boolean
• dateTimeSeconds
• dataTimeMicroSeconds
• ipv4Address,ipv6Address

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Issue 2 Field IDs

• Current version is compatible to NFv9 field IDs
• Allocating field IDs will be delegated to IANA
• There are some field Ids that we do not want to
  re-use.
• These will be labeled "reserved for NFv9"
• The list of currently unused NFv9 fields needs to
  be checked for candidates to include in IPFIX

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NFv9 Field Issues

• NFv9 has separate counters for incoming
  octets/packets and outgoing octets/packets
• not nicely applicable to probes
• unclear observation point
• Shall we just use one of them for IPFIX?
• Shall we define new fiels without "in" or "out"
  as prefix?
• NFv9 has separated values for IPv4 and IPv6
  network mask length
• shall we adopt this?
• NFv9 has smaplingInterval and samplingAlgorithm
• PSAMP showed that this is not sufficient

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List of not yet used NFv9 fields

• engineType (38), engineID (39)
• ipv4SrcPrefix (44), ipv4DestPrefix (45)
• MPLSTopLabel (46), MPLSTopLabelIPaddress (47)
• destClassOfService (55)
• srcMACAddr (56), destMACAddress (57)
• srcVLAN (58), dstVLAN (59)
• direction (61) ingressFlowegreeFlow
• IPv6OptionHeaders (74)
• MPLSlable1-10 (70-78)
• mplsTopLabelIPv6Addr