A stateless Ping tool for simple tests of GIMPS implementations <draft-juchem-nsis-ping-tool-02>

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A stateless Ping tool for simple tests of GIMPS
implementationsltdraft-juchem-nsis-ping-tool-02gt

• Christian Dickmann, Ingo Juchem,
• Sebastian Willert, Xiaoming Fu
• University of Göttingen

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Outline

• Motivation
• Design
• Extensibility
• Implementation status
• Next steps

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Motivation

• Initially
• to run GIMPS signaling along a chain of GIMPS
  nodes without the need for a full-fledged NSLP
• It is designed also to
• Gather information about the signaling nodes
  along the path
• Currently, IP addresses and timestamps (to
  calculate RTTs)
• Others are possible e.g., NTLP and NSLP states

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Design

• Design as light-weight probing NSLP
• Initiator sends Ping Message with list of
  requested information (objects)
• Each Ping-aware node on the path adds the
  requested objects
• Receiver forwards Ping Message upstream towards
  the Initiator
• Intermediate nodes add information (e.g.
  timestamps) twice
• Round Trip Times can be calculated

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Extensibility

• Current objects
• IP address (IPv4 or IPv6)
• Timestamp
• Ping Tool can be extended with new object types
• If objects are unsupported, an indication is
  added
• Possible new objects
• List of supported NSLPs
• NTLP layer state information
• State information of supported NSLPs
• Security considerations need to be addressed

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Implementation status

• Ping Tool-01 implementation is now part of our
  NSIS implementation release (GIMPS draft 06)
• http//user.informatik.uni-goettingen.de/nsis/
• Together with a release of Ethereal dissectors
  for
• GIMPS draft 06
• Ping Tool 01
• We have also successfully passed the ping
  implementation interoperability test in the
  interop event

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Next steps

• Is this work useful?
• Shall this be adopted by the WG as a "Diagnostics
  NSLP"?

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Thanks