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Forwarder Status

Forwarder Status is a module of NFD Management protocol.
It provides:

  • a dataset of forwarder version information and global counters

Forwarder Status datasets are available under namespace ndn:/localhost/nfd/status.

General Status Dataset

General Status is published as a Status Dataset at ndn:/localhost/nfd/status/general.

GeneralStatus = NfdVersion
                StartTimestamp
                CurrentTimestamp
                NNameTreeEntries
                NFibEntries
                NPitEntries
                NMeasurementsEntries
                NCsEntries
                NInInterests
                NInData
                NInNacks
                NOutInterests
                NOutData
                NOutNacks
                NSatisfiedInterests
                NUnsatisfiedInterests

NfdVersion    = NFD-VERSION-TYPE TLV-LENGTH UTF-8-STRING

(all other TLVs have nonNegativeInteger as value)
  • NfdVersion: NFD version; this is usually same as nfd --version output, but the forwarder MAY hide its version and return an empty string
  • StartTimestamp: timestamp (milliseconds since UNIX epoch) when forwarder starts
  • CurrentTimestamp: timestamp (milliseconds since UNIX epoch) of current time
  • NNameTreeEntries: number of NameTree entries
  • NFibEntries: number of FIB entries
  • NPitEntries: number of PIT entries
  • NMeasurementsEntries: number of Measurements entries
  • NCsEntries: number of CS entries
  • NInInterests: number of incoming Interest packets processed since forwarder starts
  • NInData: number of incoming Data packets processed since forwarder starts
  • NInNacks: number of incoming Nack packets processed since forwarder starts
  • NOutInterests: number of outgoing Interest packets processed since forwarder starts
  • NOutData: number of outgoing Data packets processed since forwarder starts
  • NOutNacks: number of outgoing Nack packets processed since forwarder starts
  • NSatisfiedInterests: number of satisfied Interests, incremented when a PIT entry that has been satisfied is being removed
  • NUnsatisfiedInterests: number of unsatisfied Interests, incremented when a PIT entry that has not been satisfied is being removed

TLV-TYPE assignments

Type Assigned value Assigned value (hex)
NfdVersion 128 0x80
StartTimestamp 129 0x81
CurrentTimestamp 130 0x82
NNameTreeEntries 131 0x83
NFibEntries 132 0x84
NPitEntries 133 0x85
NMeasurementsEntries 134 0x86
NCsEntries 135 0x87
NInInterests 144 0x90
NInData 145 0x91
NInNacks 151 0x97
NOutInterests 146 0x92
NOutData 147 0x93
NOutNacks 152 0x98
NSatisfiedInterests 153 0x99
NUnsatisfiedInterests 154 0x9a

Updated by Davide Pesavento 1 day ago · 18 revisions