RE: [Syslog-sec] Detailed Review Comments on Syslog Protocol -09 -Part III

["David B Harrington" <ietfdbh@comcast.net>]

Hi,

Please note that the starting epoch for SysUpTime is the
reinitialization of the network management system (e.g. the SNMP
agent). This may be different than "boot" which typically refers to
reinitialization of the hardware device. Granularity is in hundredths,
not thousandths of a second.

If you want the amount of time in TimeTicks since the device was last
initialized, you might consider hrSystemUptime from the Host Resources
MIB [RFC 2790].

> > ><snip>
> > > As far as sysUptime is concerned, I think we should stick 
> with the SNMP
> > > definition of the number of milliseconds since boot, with 
> a max value of
> > > 4294967295 and automatic reset to zero thereafter. Is 
> this understanding
> > > correct?
> > >
> > I think not;  [RFC 3418] defines sysUpTime as having a 
> SYNTAX of TimeTicks and
> > [RFC 2578] defines TimeTicks as
> >   "...represents a non-negative integer which represents
> >    the time, modulo 2^32 (4294967296 decimal), in 
> hundredths of a second
> >    between two epochs."

David Harrington
dbharrington@comcast.net
co-chair IETF SNMPv3 WG, concluded


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