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Espoo, FI

IPv4 data used (switch to IPv6)

AS Path Dispersion (by AS Hop)



This graph will give you an immediate view of the AS peering relationships near the monitor. It is primarily useful to compare with the hosting organization's own information about what ASes are providing transit for your data, to see whether it matches what the Ark probes have discovered. For example, one could see whether probes are travelling over academic or commercial networks, and where those connect with each other. It also gives the best sense of the monitor's relationship to the rest of the Internet, by seeing how close it is to a Tier 1 or Tier 2 network.



Characteristics of this graph

In this graph, we show the AS-level path dispersion, where all adjacent hops within the same AS are collapsed into a single hop. Typically, the first hop will be all one AS (ie, the local network that the monitor is in), with the second or third hop starting to split into different ASes as probes go to their destinations. This is seen as one solid contiguous column with several smaller column segments to its right.


(See the Routed /24 Topology Dataset for more information. This applies to all the dispersion graphs.)

How This Graph was Created

(This applies to all the dispersion graphs.)

Data Processing

For example:
10 ?? ?? ?? 10
10 10 10 10 10
For example, say there are only three paths:
10 20 30 40 50
10 20 30 42 52
10 ?? 30 45 55
10 20 30 40 50
10 20 30 42 52
10 20 30 45 55

Graph Generation



