The discussion continued with the presentation of individual network DiffServ features by the participants representing networks. This quickly revealed that at the time of the meeting most network operators were not able to provide complete information on their ability to support DiffServ services. Decision who works on network - transport layer DiffServ interoperability issues. The main issue is whether the hardware, software and MIBs required for the tools to support DiffServ codepoints are available. As a result of this presentation, version 02 of the Draft QBone Architecture now contains the following information.
Several tools offer the required measurement functionality.
Any tool to be applied will have to support the relevant DiffServ parameters in one way or another. In order to measure One-way Packet Delay and Instantaneous Packet Delay Variation, sequence numbers of the packets to be measured have to be captured. The One-way Packet Delay measurement further requires synchronized clocks. The QBone Measurement Working Group produced the following list of tools to support Premium service measurements. We added some words on parameters to be measured and DiffServ-specific requirements.