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Path database

The path database contains one line per target network, and is divided into fields separated by white space. The first field is the target network, in a familiar form:

     135.104.0.0/16
The filters assume that all four octets are present.

The remaining fields are in the form:

   <name>=[<date>:]value
where <date> has the form yyyymmdd, suitable for sorting (although not Y10K compliant).

The field types are listed below. Only the first four appear in current databases--the rest are deprecated and have not been used since fall 1998. Some fields may appear more than once, representing data collected at different times. They are usually sorted by date.

Name Date Value Description
Path yes see below path to target
Probe yes (none) date of last test
Target yes IP addr host on target net
Whiner yes email addr don't scan this net
Asnpath no unused deprecated
Name no net owner not used
Complete no (none) deprecated
Pathdate no date deprecated

The path field contains a comma-separated list of IP numbers, possibly followed by a completion code. If no code is present, the path reached the target. The other completion codes are:

? same as !? deprecated
!F ICMP filtered firewall encountered
!H ICMP host unreach. bad guess for the target
!N ICMP net. unreach. firewall, filtered, etc
!R   routing loop, deprecated
!L   routing loop
!Z incomplete deprecated
!! incomplete deprecated
!? incomplete no response


next up previous
Next: Label database Up: Database format and details Previous: Database format and details
Hal Burch 2000-04-18