Monitoring tools

To improve modularity, a monitoring tool is packaged in a separate RPM, which includes the appropriate GlueDomains wrap.

The prototype currently provides three monitoring tools:

• a basic ping facility, built using the perl library Net::Ping.
  • It is introduced for basic testing purposes, and is used to check connectivity.
  • Its operation does not depend on neighbor configuration.
• a more sophisticated delay measurement tool, which provides one-way delay estimates using a convex hull algorithm.
  • It provides useful information, especially for data transfer operations.
  • Its operation depends on neighbor configuration.
• the well known iperf facility, that measures available bandwidth by saturating the line.
  • It provides low level information, at a high cost.
  • Its operation depends on neighbor configuration, and a single shot can be requested by authorized users only.