Re: [DNSOP] New Version Notification for draft-perreault-dnsop-stats-mib-01.txt

Stephane Bortzmeyer <bortzmeyer@nic.fr> Mon, 23 July 2012 10:48 UTC

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Date: Mon, 23 Jul 2012 12:47:54 +0200
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
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Subject: Re: [DNSOP] New Version Notification for draft-perreault-dnsop-stats-mib-01.txt
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On Mon, Jul 16, 2012 at 11:51:12AM -0400,
 Simon Perreault <simon.perreault@viagenie.ca> wrote 
 a message of 92 lines which said:

> As suggested by a few people, we added a section to our draft
> evaluating how we stand against RFC 3197.

I won't be in Vancouver, sorry, but I've read this draft (background:
I work for a TLD operator and we have problems similar to the ones
described in the draft).

Main comment: I am not convinced by the whole idea of "Discontinuity
Time". Isn't the whole idea of SNMP to have dumb agents, often without
stable memory, and the manager is supposed to know that, to detect
discontinuities and to deal with it? Why is DNS different from typical
MIB-II counters, which can go back to zero when the router reboots?

Second, the draft requires a mention of RFC 6168, which covers also
statistics.

Otherwise, the draft seems sensible, addresses a real problem for DNS
operators who have subcontractors, and, IMHO, correctly answer the
warnings of RFC 3197.