Re: [IPFIX] exporting ranges in IPFIX

Dear all,

I've had two feedbacks requesting a range start / range end mechanism. 
So I propose to request four fields:

    Port block start:           16 bits
    Port block end:             16 bits
    Port block step size        16 bits
    Number of ports in block    16 bits

These can be reported in whatever way best matches the implementation.

eg, { start, step, number }, { start, end, step }, { start, end, number }.

The default step size will be 1, so { start, end } indicates a 
contiguous range.

Finally, I've upped the step size from 8 bits to 16 bits to allow step 
sizes > 255.

Any further feedback?

Thanks,
P.


On 05/06/12 16:29, Paul Aitken wrote:
> Dear IPFIX experts,
>
> As far as I know, IPFIX doesn't have a generic mechanism for reporting 
> ranges.
>
> I'm looking for a way to report bulk port allocation per section 5 of 
> http://tools.ietf.org/html/draft-ietf-behave-lsn-requirements-05.
>
> This method would be useful for reporting port ranges in 
> draft-tsou-behave-natx4-log-reduction-02 and 
> draft-bajko-pripaddrassign-04.
>
> So I propose to request three new IPFIX Information Elements:
>
>    Port block start:           16 bits
>    Port block step size         8 bits
>    Number of ports in block    16 bits
>
>
> However, there could be better ways to export a "range" which don't 
> require three new IEs each time. Do you forsee a need for a such a 
> mechanism?
>
> Shall I proceed with my request to IANA? If so, should I write a short 
> ID explaining how the three IEs should be used together?
>
> Thanks,
> P.
>
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