Re: [IM-Talk] Iterating over a Table

[Dennis . OReilly]

I recently went to write a probe for the Alteon ssl accelerator/load 
balancer but did't complete the probe because of this restriction. In 
this situation you first need to "walk" a branch to read the list of 
integer indexes (one for each row), and then you append these indexes 
to the OIDS for the specific rows to "get" the rows. In the Alteon 
case each index corresponds to a virtual load balancer instance that 
has been configured into the Alteon to service a specific 
application. Once you have the index for a particular virtual 
instance you can retrieve all kinds of good data specific to that 
virtual instance including name of the instance, packets in, packets 
out, etc. If you have gone to the effort to install ssl accelerators 
and load balancers, this is important data.

At 9:25 AM -0400 4/20/05, Richard E. Brown wrote:
Folks:
--- Steve Foster wrote:
One for the developers, custom probe writers.....
Are there any plans to permit tables in custom probes? For example like the
storage status within the host resources probe.
Has anyone got any reccomendations for how to implament a probe that would
extract useful information out of a table, where the the table is ordered
differently between hosts.
--- end of quote ---
Yes, we're beginning to think seriously about tables in probes. We have some
general ideas about how to go about it, but it would help us 
enormously to get a
sense of what it would mean to have a custom SNMP probe facility that "handles
tables".

Specifically, we are looking for examples of equipment that stores data in
tables, and how you'd like InterMapper to retrieve/compare/display that
information. If you've ever thought about making a probe that 
processed tables,
please tell us:

-	What equipment was involved? What tables and what fields of 
those tables are
interesting?
-	Should InterMapper process all the rows of the table identically?
-	If not, how would InterMapper "know" which rows to process?
-	Do you ever need to relate data from one table with data in 
another table?
-	Are there cases where you'd want to use data from one device 
to retrieve a
value from another device?
-	What computations/calculations/comparisons would you expect 
the probe to
perform?
-	Are there additional built-in functions that would help to 
create the probe?
-	How should the tabular data be formatted in the status window?
-	What other facilities would you want to see?

We would be pleased to hear your thoughts. It would be great if you 
can specify
certain equipment/MIB/OIDs/etc. that you're familiar with. It would also be
useful to know about the "competition" - any other tools/programs that offer a
good way to do these things. Many thanks!

Rich Brown                    [EMAIL PROTECTED]
Dartware, LLC                 http://www.dartware.com
10 Buck Road, PO Box 130      Telephone: 603-643-2268
Hanover, NH 03755-0130 USA    Fax: 603-643-2289
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