Re: PerfHist-TC-MIB

[Jeff Johnson <[e-mail]>]

At 09:38 6/3/98 -0400, Rajesh Abbi wrote:
>The 'Perf***Count' objects are supposed to be 'monotonically increasing'

They are only monotonicially increasing during a 15 minute interval, at
which time they reset to zero.  This prevents a Counter* type from being used.

>The 'xyzValidIntervals' & 'xyzInvalidIntervals' are confusing and do not 
>provide sufficient information.  In my earlier posting to the
>mailing-list
>(May 27) I had propsed using 'xyzNumIntervals' to reflect number of
>entries
>in the table, and each entry having a 'xyzDataSuspect' flag to indicate
>if
>data is 'valid' or 'invalid'.  This approach is also used in the
>'draft-ietf-atommib-atmhist-00.txt' MIB.

Keep in mind that the origin of the Perf Hist TC MIB is the three trunk
mibs (SONET, DS1, and DS3).  These definitions were factored out since they
were common to all three mibs, and so that others could use them as well.
I would love to make changes to the valid/invalid stuff, but it is
impossible to do so without affecting implementations of the trunk mibs.
In other words, there isn't a whole lot of modification that can be made to
this mib.

/jeff