comments on framework draft

[Tanja Zseby <zseby@fokus.gmd.de>]

 Hi Nick,

please find below some comments on the framework draft.

- I would propose to group the requirements in requirements about 
schemes, configuration and reporting. Maybe it is also possible to show 
what requirenments are needed for which scenarios. Furthermore  I think 
some requirements should be more precise to be able to answer whether 
they are met or not (e.g. what does "ease of configuration " and 
"maximum line rate" mean exactly)
- Regarding the terminology section we need to agree on common terms in 
both drafts and I would suggest to re-use IPFIX terminology as much as 
possible. Regarding this I have a few comments:
   - According to the current definition a PSAMP device would be an 
IPFIX device just without exporting process ?
   - The measurement process definition currently differs from IPFIX. I 
think we could simply use the IPFIX definition, where the exporting 
process is considered as a separate process.
   - As I understand  the purpose of the reporting process is just 
generating records. In IPFIX this is a part of the measrement process
   - Cant the measurement packets be seen as specific flow records (as 
defined in IPFIX)
- The categorization of schemes differs in our drafts. We can discuss 
this in the WG session.
- Regarding the reporting I would suggest to write down the reporting 
requirements and then compare with the IPFIX requirements in order to 
see whether IPFIX can be used as exporting protocol for psamp.

Regards
Tanja










--
Dipl.-Ing. Tanja Zseby			    	      	
FhI FOKUS/Global Networking			Email: zseby@fokus.fhg.de	
Kaiserin-Augusta-Allee 31				Phone: +49-30-3463-7153
D-10589 Berlin, Germany				Fax:   +49-30-3463-8153
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