Hi Haoyu, I think this work is useful that can help operators to understand the IFIT capabilities and choose among different technologies for the deployment. It’s invaluable for application-aware network operations. Some thoughts after going through the document. 1. I fail to see the whole picture of the IFIT framework with Figure 1. You listed several functional components in section 2. But I cannot see where they sit in the figure and how they interact to accomplish a close loop. So my suggestion is to revise figure 1 with more information. 2. In section 2, overview, you mentioned two basic on-path telemetry data collection modes, i.e., passport and postcard. I did not see more details but one definition. It would be really useful for the operators to understand the pros and cons, and when to use which. So that it can guide the operators to choose the right solution in their network. So maybe one section on this is welcome. 3. I can smell that the C2 challenge is critical, and the export data reduction should be useful. But I do not have a direct feeling on the impact to the network. That is to say, I cannot evaluate if I can accept the amount of data export in my network or not from the existing text. It would be valuable if you can give a simple evaluation with numbers somewhere in the document, maybe section 4. Cheers.
HUANAN CHEN（陈华南） Data Communication Research Department Guangdong Research Institute of China Telecom Co.,Ltd. Tel：020-3863-9346 PH：133-1609-7163 QQ：17335837 Mail：[email protected] [email protected]
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