The project so far has developped the following tools.
Tools for graph generation.
We developed tools for the generation of
realistic topologies. The first is based on a model proposed by
Barabasi and Rekka. The second is a generator developed by the PIs
and recreates the skewed distributions that are observed in real
graphs. The third tool generates small realistic graphs by reducing
real large topologies and both the software and the ideas were
developed in this project.
Tool for topology analysis.
We developed a tool to analyze the
topology of graphs and assess the realism of a topology.
SELFIS: A Tool for traffic data analysis.
We developed the first version of a
tool to analyze and characterize traffic measurements.
Our focus is on analyzing properties such
as self-similarity and long range dependence. We are currently
developing a user-friendly interface and adding more functionality.
REALITI: A tool for end-to-end delay measurements:
We developed the first part of
a tool to measure end-to-end delays. Our tool exchanges packets between
two sites that have a copy of the tool and collects time-stamp data
from both sites. With this tool, we get
Note that current measured data and tools was not
sufficient for our needs and failed one or more of the above requirements.
- a. frequent probes (ie 20ms)
- b. use UDP packets both ways (traceroute uses ICMP on the return path)
- c. large number of measurements for a given destination